Terms of Service

What changed on September 18, 2026: the App now includes short written Technique Notes for each strike. Sections 4 to 8 describe them: they are general information, not coaching or instruction tailored to you.

These Terms of Service (“Terms”) are a binding agreement between you and D2X Enterprises LLC (“we”, “us”, or “our”) governing your use of the Lower Beast Side Trainer app, listed in the Apple App Store as “Lower Beast Side Kickboxing” (“the App”, “LBS”). Please read them carefully, especially Section 1 (Eligibility — 18+), Section 5 (No Coaching, Instruction, or Medical Relationship), Section 6 (Safety Disclaimer and Assumption of Risk), Section 8 (Disclaimer of Warranties), and Section 9 (Limitation of Liability).

The App tells you to hit things. It generates striking combinations for you to perform, usually against a heavy bag, at speed, under fatigue, in a space and on equipment we know nothing about, and it includes short written notes on how each strike is generally performed. Physical training of this kind carries a real and unavoidable risk of serious injury or death. By downloading, accessing, or using the App, you agree to these Terms. If you do not agree, do not use the App.

1. Acceptance and Eligibility — You Must Be 18 or Older

By using the App, you confirm that:

• you are at least 18 years old;
• you can form a binding contract and are not barred from doing so under any applicable law; and
• you are agreeing to these Terms on your own behalf, for your own training.

The App is for adults only. It is not intended for, directed to, or licensed for use by anyone under 18, and we do not offer a parental- or guardian-consent path. A parent, guardian, coach, instructor, or gym operator may not accept these Terms on behalf of a minor, and may not make the App available to a minor. If you are under 18, do not use the App.

If you are an adult and you allow another person to use the App on your device, you are responsible for ensuring that person is also an adult, has read Sections 5 and 6, and agrees to these Terms.

2. License and Acceptable Use

We grant you a personal, limited, non-exclusive, non-transferable, revocable license to use the App for your own personal training, subject to these Terms and any applicable app-store terms.

You agree not to:

• Use the App for any unlawful purpose or in violation of any applicable law or regulation.
• Use the App to instruct, coach, supervise, program, or lead training for any other person, including in a gym, class, club, camp, team, school, or commercial setting, unless you are independently qualified and insured to do so and you take full and sole responsibility for that instruction (see Section 5).
• Make the App available to anyone under 18.
• Reverse engineer, decompile, or attempt to extract the source code of the App, except where this restriction is prohibited by law.
• Interfere with, disrupt, overload, or attempt to gain unauthorized access to the App or its infrastructure.
• Resell, sublicense, rent, or commercially exploit the App or its content without our permission.

3. Your Data

The App has no account and no sign-in. Your settings, preferences, and session and round counts are stored only on your device. You are solely responsible for your own data, including backing it up. We have no copy of it and cannot recover it if your device is lost, reset, or damaged, or if you delete the App. See our Privacy Policy for details.

4. What the App Actually Does

The App is a random combination generator with a round timer. For each round it assembles a sequence of strikes from a fixed built-in library, by a computer program following fixed rules, and displays their abbreviations and names. It counts down rounds and rest periods and plays audio cues (a bell, a knock warning, a countdown tick). It also contains a short, general written description of each strike (“Technique Notes”), which is the same for every user.

The App cannot see, hear, or measure you. It does not know your age, weight, fitness, injury history, medical conditions, skill level, technique, fatigue, hydration, or whether you are executing anything correctly or safely. It does not know what equipment you are using, whether that equipment is sound, whether your hands or wrists are wrapped, whether your surface is stable, or how much clear space is around you. It receives no information about your body or your surroundings at any point.

It therefore cannot adapt to you, cannot warn you, and cannot stop you. Everything it displays is a generic suggestion produced without any knowledge of you or your circumstances.

The App deliberately makes sessions harder as they go on. Combinations get longer and their transitions get more awkward in later rounds — that is the intended design of the product. It does this on a fixed schedule tied to the round number, not in response to how you are actually coping. This means the App will present its most demanding material at precisely the point in a session when you are most tired and most likely to be injured. Judging whether you are still fit to continue is entirely your job, and the App will never do it for you.

5. No Coaching, Instruction, Medical, or Professional Relationship

Using the App does not create a coaching, instruction, training, supervision, medical, physiotherapy, or other professional relationship between you and us, and nothing in the App is professional advice of any kind.

• We are not your coach, trainer, or instructor. The Technique Notes are general reference text, written once for everyone. We do not assess or correct your technique, we do not supervise you, we do not program your training, and we do not assess whether any strike or combination the App shows is appropriate for you on any given day.
• We are not medical professionals and the App is not a medical device. Nothing in the App diagnoses, treats, prevents, or monitors any condition or injury, and nothing in it is medical, physiotherapy, rehabilitation, nutritional, or fitness-assessment advice.
• The App is not a substitute for qualified in-person instruction. Striking technique — how to make a fist, how to land a shin, how to keep your knee and ankle safe on a roundhouse, how to fall, how to protect your wrists, hands, elbows, and neck — is learned in person from a qualified coach who can see you. It cannot be learned from an abbreviation or a few lines of text on a phone screen.
• The Technique Notes are general information, not instruction tailored to you. They describe briefly how a strike is commonly performed from an orthodox (left foot forward) stance. They are incomplete by design, they may not suit your body, your level, your injuries, or your style, and they are no substitute for being taught and watched by a qualified coach. We make no representation that following them is safe for you, or that any combination the App generates is safe, biomechanically sound, or appropriate for your body, your skill, your equipment, or your condition. If a Technique Note differs from what your coach teaches, follow your coach.
• The App is not a safety device, a spotter, a monitoring system, or an emergency system, and must never be relied on as one.

Consult a qualified physician before starting or resuming any exercise program, and especially before combat-sports training. This applies with particular force if you are pregnant, recovering from an injury or surgery, over 40, sedentary, or have or have had any heart, lung, blood-pressure, neurological, concussion, joint, tendon, bone, back, neck, or metabolic condition, or take any medication that may affect your heart rate, balance, coordination, or judgment. If you are in doubt, do not train until a doctor has cleared you.

6. SAFETY DISCLAIMER AND ASSUMPTION OF RISK — PLEASE READ

COMBAT-SPORTS TRAINING IS INHERENTLY AND UNAVOIDABLY DANGEROUS. YOU CAN BE SERIOUSLY AND PERMANENTLY INJURED, OR KILLED, DOING WHAT THIS APP SUGGESTS.

Striking training of the kind the App prompts — punches, elbows, knees, roundhouse, front, side, and low kicks, and defensive movement — carries risks that include, without limitation: fractures and dislocations of the hands, wrists, fingers, feet, toes, shins, ribs, and ankles; sprains, strains, and tears of muscles, tendons, and ligaments, including of the knee, hip, groin, shoulder, and back; contusions and shin, elbow, and knuckle trauma; cartilage and joint damage; nerve damage; cuts and abrasions; head, neck, and spinal injury, including concussion and other traumatic brain injury, from falls, from impact, or from the whipping motion of unbalanced strikes; cardiac events, including heart attack and sudden cardiac death; heat illness, dehydration, rhabdomyolysis, fainting, and loss of consciousness from overexertion; damage to your property or to other people and their property; long-term, permanent, or fatal harm; and injury caused by fatigue, by loss of technique, by unsound equipment, by an unsuitable floor or space, or by an object or person you did not see.

These risks exist independently of the App. They belong to the activity. The App does not create them and cannot remove them.

Assumption of risk. You understand and expressly acknowledge that:

• Striking training is inherently and unavoidably dangerous, and no timer, program, or piece of software can make it safe.
• You alone choose whether to train, what to throw, how hard to throw it, what to throw it at, in what space, on what surface, with what protective equipment, and when to stop.
• The App’s suggestions are generated automatically without any knowledge of you, and are not a judgment that the movement is safe for you.
• The Technique Notes are general and were written without any knowledge of you. They may be incomplete, may contain errors, and may differ from how your coach teaches. Whether, how, and how hard you attempt any movement they describe is your decision alone.
• The App escalates difficulty as a session goes on, while you get more tired, and this escalation is on a fixed schedule that takes no account of your actual condition. You accept that combining fatigue with harder material increases the risk of injury, and that managing that combination is your responsibility alone.
• You knowingly, freely, and voluntarily assume all risks — known and unknown, including risks arising from ordinary negligence of others where the law permits you to assume them — arising from your training and from your use of the App, and you accept full responsibility for your own decisions, actions, technique, equipment, environment, and physical condition.

You agree that you will:

• Obtain medical clearance from a qualified physician before training, and stop and seek medical attention if anything changes.
• Learn technique from a qualified in-person coach, and never attempt a movement you have not been taught. Reading a Technique Note is not being taught.
• Warm up properly, progress gradually, and never treat a displayed combination as a target you must hit at full speed or full power.
• Inspect your equipment and your space before every session — your bag and its mount, its chain, bracket, or base, your gloves, wraps, shin guards, and footwear, your floor and its grip, and the clear distance around you, above you, and behind you. Never strike a bag, wall, post, surface, or object not designed and installed to be struck.
• Never strike another person except under the supervision of a qualified coach, with that person’s consent and appropriate protective equipment.
• Train within your limits, and stop immediately if you feel pain, chest pain, dizziness, faintness, nausea, unusual shortness of breath, numbness, blurred vision, disorientation, or if your technique is breaking down through fatigue. Stopping, skipping a round, resting longer, or ending a session early is always permitted and is always your call, whatever the timer shows. The bell is not an instruction.
• Never use the App while impaired by alcohol, drugs, or medication, while injured or unwell, or while your attention is needed elsewhere.
• Not attempt to read the screen while striking in a way that compromises your balance, guard, or awareness of your surroundings. Look at the screen when you are not in motion.
• Keep children, pets, bystanders, and breakable property well clear of your training area.

If you experience a medical emergency, stop and contact emergency services immediately. The App will keep counting; ignore it.

This Section 6 does not purport to waive, and does not waive, any right you may have that cannot be waived under the mandatory law of your country or state of residence, including any liability for death or personal injury caused by our negligence (see Sections 9 and 17).

7. Purchases

The App offers an optional one-time in-app purchase, “Pro”, which unlocks additional strikes in the App’s library, and their Technique Notes. If we add strikes to Pro in a later version, they are included in your purchase at no extra charge for as long as we offer the App. This is a one-time purchase, not a subscription — there is no recurring charge. The price shown to you in the store at the time of purchase, in your local currency, is the price that applies.

All purchases are processed by the applicable app store (Apple App Store or Google Play). Billing, payment, and refunds are handled by Apple or Google under their respective terms and policies; we do not separately process payments or issue refunds. We use RevenueCat, Inc. to verify and restore your purchase (see our Privacy Policy). Prices may change prospectively; any change will not affect a purchase you have already made.

Pro unlocks additional content under the same personal, non-transferable license described in Section 2 — it is a license, not a sale of the software. Pro carries no additional or different warranty beyond Section 8, and unlocking additional strikes, or their Technique Notes, is emphatically not a representation that those strikes are safe for you or that you are ready to perform them. Elbow, low-kick, and spinning techniques in particular are advanced movements with their own injury profile; unlocking them changes what the App displays and nothing else.

Because the App has no account, your Pro upgrade is tied to the Apple or Google account you used to buy it. You can restore Pro at no charge on any device signed in to that store account using “Restore purchases”. If you reinstall or reset on-device data, restoring re-activates Pro; it cannot be transferred to a different store account.

Refunds and any statutory cancellation or withdrawal rights for digital purchases are handled by Apple or Google under their policies and the consumer law of your country; nothing in these Terms limits any non-waivable right you have.

8. Disclaimer of Warranties

THE APP IS PROVIDED “AS IS” AND “AS AVAILABLE”, WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY. To the fullest extent permitted by law, we disclaim all warranties, including any implied warranties of merchantability, fitness for a particular purpose, accuracy, title, and non-infringement. We do not warrant that the App will be uninterrupted, error-free, or secure, that its timing, its audio cues, or its generated content will be accurate, audible, appropriate, or complete, that the Technique Notes are accurate, complete, or suitable for you, or that defects will be corrected.

In particular, we do not warrant that any audio cue will sound, that it will be audible over your music or over gym noise, that the timer will keep exact time if your device sleeps, is interrupted by a call, loses focus, or is killed by the operating system, or that the screen will stay on. Do not rely on the App as the only thing standing between you and overtraining, and never place yourself in a position where a missed or inaudible cue could hurt you.

Some jurisdictions do not allow the exclusion of certain warranties or of implied statutory guarantees, so some of the above may not apply to you. Where you deal with us as a consumer, you may have statutory conformity and warranty rights that these Terms do not affect (see Section 17).

9. Limitation of Liability

IMPORTANT — WHAT WE DO NOT AND CANNOT LIMIT. Nothing in these Terms excludes or limits our liability for: death or personal injury caused by our negligence; fraud or fraudulent misrepresentation; gross negligence or willful misconduct; or any other liability that cannot be excluded or limited under the law of the Commonwealth of Pennsylvania or under the mandatory consumer-protection law that applies to you. This carve-out prevails over everything else in this Section 9 and everywhere else in these Terms. The limits below apply only to liability that the law actually permits us to limit.

SUBJECT TO THE PARAGRAPH ABOVE, AND TO THE FULLEST EXTENT PERMITTED BY LAW, WE WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, DATA, GOODWILL, OR OTHER INTANGIBLE LOSSES, ARISING OUT OF OR RELATING TO YOUR USE OF (OR INABILITY TO USE) THE APP, EVEN IF WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

SUBJECT TO THE FIRST PARAGRAPH OF THIS SECTION, AND TO THE FULLEST EXTENT PERMITTED BY LAW, OUR TOTAL CUMULATIVE LIABILITY ARISING OUT OF OR RELATING TO THE APP OR THESE TERMS WILL NOT EXCEED THE GREATER OF (A) THE AMOUNT YOU PAID US FOR THE APP IN THE 12 MONTHS BEFORE THE CLAIM AROSE, OR (B) FIFTY U.S. DOLLARS ($50).

Because some jurisdictions do not allow certain limitations or exclusions of liability, parts of this section may not apply to you. Where a limitation or exclusion in this section is not permitted for you, that limitation or exclusion is automatically reduced or reformed to the maximum protection the applicable law does allow, rather than removed entirely, and the rest of this section stays in force — as provided in Section 14.

10. Release and Indemnification

To the fullest extent permitted by law, and subject in every respect to the carve-out in the first paragraph of Section 9, you release D2X Enterprises LLC and its officers, members, employees, and agents from any claim for injury, illness, death, property damage, or loss arising from your own training, your technique, your physical condition, your equipment, or your training environment.

To the extent permitted by law, you agree to indemnify and hold harmless D2X Enterprises LLC and its officers, members, employees, and agents from and against any claims, damages, losses, liabilities, and reasonable expenses (including reasonable attorneys’ fees) arising out of or related to your misuse of the App, your violation of these Terms, your training activities, your use of the App to lead or supervise anyone else’s training, or injury to any other person or property arising from your training, or your violation of any law or the rights of a third party. This does not apply to the extent a claim arises from our own gross negligence or willful misconduct, and it does not apply where, or to the extent, the mandatory consumer law that applies to you does not permit it.

11. Device Behavior and Permissions

To do its job the App asks your device for a few capabilities. So you know why:

• Audio playback in the background and while the ringer is silent, and a media-playback foreground service on Android, so that the bell, knock, and tick cues still sound while you are training and the App is not in the foreground, and so the operating system does not suspend the session mid-round.
• Modifying audio settings on Android, so that the App can lower (“duck”) your music for the duration of a session instead of stopping your music outright. The cues play over the top of it. Your music returns to full volume when the session ends. You can turn ducking off in Settings.
• Keeping the screen awake while a session runs, so the combination stays visible. You can turn this off in Settings.

The App does not request microphone, camera, location, motion, contacts, or health-data access, and it does not record audio. These capabilities can still be overridden by your operating system, your battery-saver settings, another app, or an incoming call — which is another reason not to rely on the cues as a safety mechanism (see Section 8).

12. Third-Party Services

The App is distributed through third-party app stores and, only if you opt in, uses a third-party analytics provider (PostHog) to process anonymous usage data as described in our Privacy Policy. Each time the App starts, it checks with RevenueCat, Inc. whether you own Pro, and any Pro purchase is processed by the app store and verified through RevenueCat. Your use of those stores and services is subject to their own terms and policies, which we do not control and for which we are not responsible.

13. Service Changes and Termination

We may modify, suspend, or discontinue the App or any of its features at any time, including changing the strike library or how combinations are generated. We may suspend or terminate your access if you violate these Terms or use the App in a way that could harm us or others. You may stop using the App at any time and delete it as described in our Privacy Policy. Sections that by their nature should survive termination (including Sections 5, 6, 8, 9, 10, 14, 15, and 17) will survive.

14. Severability and Reduction to the Maximum Permitted

If any provision of these Terms — or any part of a provision, including any warranty disclaimer, assumption of risk, release, limitation or exclusion of liability, indemnity, choice of law, or choice of forum — is found to be invalid, unenforceable, or prohibited in the jurisdiction of a particular user, then:

• that provision is not struck in whole. Instead, it is automatically read down, limited, or reformed to the greatest degree of protection that is valid and enforceable under the law applicable to that user — for example, a liability cap that is too low for a given jurisdiction applies at the highest amount that jurisdiction does allow, and a release or limitation that is disallowed for one type of claim still applies to every other claim for which it is allowed;
• if no reformation is possible, that provision (or the offending part of it) is severed only as to that user and only to the minimum extent necessary; and
• the invalidity or unenforceability of a provision as to one user or in one jurisdiction does not affect that provision as to any other user or in any other jurisdiction, and all remaining provisions stay in full force and effect.

This section is intended to preserve the maximum protection the law allows in each user’s jurisdiction, while never purporting to override a right that the user’s mandatory law makes non-waivable.

15. Governing Law and Dispute Resolution

These Terms are governed by the laws of the Commonwealth of Pennsylvania, USA, without regard to its conflict-of-laws rules. Subject to any non-waivable rights you have under the law of your home jurisdiction, you agree that any dispute arising out of or relating to the App or these Terms will be resolved exclusively in the state or federal courts located in the Commonwealth of Pennsylvania, and you consent to the personal jurisdiction and venue of those courts. Nothing in this section limits your right to bring a qualifying claim in small-claims court.

If you are a consumer, this choice of law and this choice of courts do not deprive you of the protection of the mandatory law of your country of residence, and do not deprive you of any right you have to bring proceedings in, or be sued only in, the courts of your own country where that right cannot be waived (see Section 17). Where this section cannot lawfully be applied to you in full, it applies to the maximum extent the applicable law permits rather than not at all, as provided in Section 14.

16. Entire Agreement and Translations

These Terms, together with our Privacy Policy, constitute the entire agreement between you and us regarding the App and supersede any prior agreements on that subject. Our failure to enforce any provision is not a waiver of it.

We may provide these Terms in languages other than English for your convenience. If there is any conflict or inconsistency, the English version governs — except that, where the mandatory law of your country requires that consumer terms be provided and interpreted in your own language, that requirement prevails to the extent the law so requires.

17. Your Mandatory Local Consumer Rights

This section prevails over anything in these Terms that conflicts with it.

If you use the App as a consumer, you have rights under the mandatory law of the country or state where you live that cannot be reduced, waived, or removed by a contract like these Terms. Nothing in these Terms limits, excludes, or overrides any of those non-waivable rights, and these Terms are to be read in a way that is consistent with them.

In particular, and without limiting the above:

• If you live in the European Economic Area (EEA) or the United Kingdom, our choice of Pennsylvania law does not deprive you of the protection of the mandatory consumer-protection rules of your own country; you keep any statutory conformity, warranty, and legal-guarantee rights you have for digital content and services under your local law; and you keep any right you have to bring proceedings in the courts of your own country, and generally to be sued only there. The liability limits, warranty disclaimers, assumption of risk, release, indemnity, choice of law, and choice of forum in these Terms apply to you only so far as your local mandatory law allows, and no further.
• Some U.S. states restrict or prohibit pre-injury releases and assumptions of risk, particularly for gross negligence or recklessness. Where that is so, Sections 6 and 10 apply only to the extent that state’s law permits, and are reformed rather than struck (Section 14).
• We remain fully responsible for death or personal injury caused by our negligence, for fraud, and for anything else that the law applicable to you says we cannot exclude or limit (see Section 9).
• Where any other data-protection or consumer law that applies to you (for example in the United States, the Middle East, or elsewhere) grants you rights that these Terms would otherwise limit, those rights prevail to the extent the law so requires.

We include this section because we intend these Terms to be honest and enforceable, not to overreach: the limits elsewhere in these Terms are meant to apply to the full extent the law allows, and not one step beyond it.

18. Contact Us

Questions about these Terms? Reach us through our support page at https://d2xenterprises.com/support/, or by email at support@d2xenterprises.com:

D2X Enterprises LLC 30 S 15th St Ste 1550 PMB 852931 Philadelphia, Pennsylvania 19102-4806 US

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