These Terms and Conditions (“Terms”) govern your use of the Gym Logbook mobile application (“App”). By downloading, accessing, or using the App, you agree to these Terms. If you do not agree, do not use the App.
Gym Logbook is a personal weightlifting logbook for recording workouts, history, templates, and related fitness data on your device. References to “we”, “us”, or “our” mean the developer of Gym Logbook as identified on the Apple App Store listing.
You must be able to form a binding contract in your jurisdiction and comply with Apple’s App Store terms. The App is intended for personal, non-commercial use.
The App lets you, among other things:
Features may change over time. Some capabilities require a network connection, a signed-in account, or system permissions you grant on your device.
Guest use is allowed. If you sign in, you are responsible for the credentials and linked providers (Apple, Google) you use. You must not attempt to access another person’s account or disrupt the service. We may suspend or terminate accounts that violate these Terms or applicable law.
You retain ownership of workout logs, notes, custom exercises, templates, and other content you create (“Your Content”). You grant us a limited license to host, process, and sync Your Content solely as needed to operate the App’s features you use (including cloud sync when signed in). You are responsible for Your Content and for keeping any backups you need.
If you choose to suggest an exercise you created for the App's built-in library, you grant us a non-exclusive, worldwide, royalty-free, perpetual licence to use what you sent — its name, muscle groups and any steps you wrote — to create, describe and distribute exercises in the App. We may rename, rewrite, translate or decline it, we author the final entry ourselves, and we do not attribute it to you. Suggesting is always optional and nothing is sent unless you choose to send it.
You allow us to use your data — such as workout, exercise and usage data — in anonymised form for research and statistical purposes, for example to understand how people train and to improve the App. Anonymised means it is not linked to your name, email address or account. This data is used only by us; no third-party app or company gets access to it.
If you share information with another user — by granting a friend permission to view part of your training, sending them a workout or template, or training a shared session — you are choosing to disclose it to that person. You can withdraw a permission or remove a connection at any time, but doing so stops future access; it cannot undo what someone has already seen. Do not share anything you would not want that person to keep.
You agree not to:
Gym Logbook is a logging tool, not a medical device and not medical, training, or nutritional advice. Estimated one-rep max and similar calculations are approximations only. Consult a qualified professional before starting or changing an exercise program. You use the App at your own risk.
The energy estimate is an estimate, not a measurement. Where you enable it, the App calculates an approximate energy cost for a finished session on your device. It does so by estimating your resting metabolic rate from the height, weight, year of birth, and sex you enter, using the Mifflin–St Jeor equation (1990), and multiplying it by a published activity value for the kind of training each exercise represents, taken from the 2024 Adult Compendium of Physical Activities, over the recorded duration of the session. Neither the load you lifted nor any effort mark affects the result.
If you enable the optional heart-rate chart, the App also reads heart-rate readings recorded by Apple Health for the minutes of a finished session, and uses their average to estimate the energy cost of the cardio part of that session with a published equation (Keytel and colleagues, 2005). It does not use heart rate to estimate the cost of resistance training: heart rate rises during heavy or static effort for reasons that do not track energy expenditure, so applying that equation to lifting would report energy you did not spend. The chart, and the heart rate shown live during a workout, are a display of readings recorded by your device or watch. They are not a medical measurement, are not a diagnostic tool, and must not be used to detect, monitor or make decisions about any heart condition. If you have concerns about your heart rate, consult a physician.
Published measurements of the energy cost of resistance training vary widely between individuals and between studies, so the figure is deliberately rounded and shown as an approximation. It is not a medical or nutritional measurement, must not be used to make medical decisions or to plan clinical nutrition, and should not be relied on where accuracy matters. Where the App writes this estimate to your health store, it is written as an estimated active energy value; if another device or app also records the same session, your totals may count it more than once. Consult a qualified professional — for example a physician or registered dietitian — before relying on energy figures to change how you eat or train.
The exercise illustrations in the App are generated by AI and may depict a movement inaccurately. They are provided only to help you recognise an exercise at a glance; the written instructions and safety notes are the reference, and you should read them. Do not rely on an illustration as a demonstration of correct or safe technique — if an image looks wrong, or you are unsure how to perform a movement, ask a qualified coach first.
Sign-in, analytics, crash reporting, cloud sync, and Health export may rely on third parties (for example Apple, Google, and Firebase). The optional ad after a workout is provided by Google AdMob and its mediation partners Unity Ads and AppLovin; we do not control the content of the ads they serve. Their terms and privacy practices also apply when you use those features — see section 2.10 of the Privacy Policy.
The App, branding, catalogs, design, and software (excluding Your Content) are owned by us or our licensors and are protected by intellectual property laws. These Terms do not grant you any ownership interest in the App.
The App is provided “as is” and “as available.” To the fullest extent permitted by law, we disclaim warranties of merchantability, fitness for a particular purpose, and non-infringement. We do not warrant that the App will be uninterrupted, error-free, or free of data loss.
To the fullest extent permitted by law, we are not liable for indirect, incidental, special, consequential, or punitive damages, or for lost profits, data, or goodwill, arising from your use of the App. Our total liability for any claim relating to the App is limited to the greater of (a) the amount you paid us for the App in the 12 months before the claim, or (b) USD 50. Some jurisdictions do not allow certain limitations; in those cases, the limitation applies to the maximum extent permitted.
You may stop using the App at any time and may delete your account where that option is offered. We may stop providing the App or suspend access if required for legal, security, or operational reasons. Provisions that by nature should survive (including ownership, disclaimers, and limitations) will survive termination.
We may update these Terms. The “Last updated” date will change when we do. Continued use after an update means you accept the revised Terms. If you do not agree, stop using the App.
These Terms are governed by the laws applicable in the developer’s principal place of business, without regard to conflict-of-law rules, except where mandatory consumer protections in your country require otherwise.
For questions about these Terms, email davit.ghushchyan@gmail.com or see Support.