Version 1.0 · Revised July 21, 2026

Terms of Use

Terms for the local diary, advertising, reports, and Android system features.

At a glance

The Application provides a local tool for a personal diary: the User controls the contents and the Rightholder does not receive them. It does not replace professional medical care, contains no purchases or subscriptions, and is provided free of charge through advertising delivered with Yandex Mobile Ads SDK. The User controls personalization rather than disabling all advertising. The complete Terms below control.

  • Free application
  • Android
  • 13+

1. General provisions

1.1. These Terms of Use (the “Terms”) are between the user of the GastroDnevnik mobile application (the “User”) and Individual Entrepreneur Chaplygin Artem Eduardovich, TIN (INN) 463252089851, Primary State Registration Number (OGRNIP) 326460000030126 (the “Rightholder”).

1.2. The Terms govern the use of the GastroDnevnik Android application with package identifier ru.gastrodnevnik.app, its updates, and related materials (the “Application”).

1.3. By installing, launching, or using the Application, the User confirms that they have read and accepted these Terms. A User who does not accept them must not install the Application or must stop using and uninstall it.

1.4. When the Application is distributed through an application store, the relevant store rules apply additionally to matters relating to that store.

1.5. The Privacy Policy is a separate document. It describes information that may become available to the Rightholder after the User independently sends a support email, when the website is visited, and through advertising integration, and it explains the diary’s local architecture. Any consent or choice concerning technical advertising data, where required, is requested separately from acceptance of these Terms.

2. Purpose and service model

2.1. The Application is intended for independent personal recording of food, well-being, symptoms, medication, sleep, activity, and other observations, and for reminders, local analytics, reports, data import, and data export.

2.2. The Application is a local software tool. The User independently decides what to record and controls operations with that information on the User’s device. The Rightholder does not receive diary contents, has no remote access to them, and does not process them on a server.

2.3. The Application is provided free of charge, contains advertising, and does not provide a paid download, in-app purchases, or subscriptions.

2.4. Some functions depend on the Android version, device capabilities, system permissions, network availability, and independent third-party services.

3. Age

3.1. The Application is intended only for persons aged 13 or older. Persons under 13 must not install or use the Application.

3.2. By accepting these Terms, the User confirms that they are at least 13 and have read them.

3.3. The Application is not directed to persons under 13 and does not use age information to create a separate age-based profile.

4. Important medical disclaimer

Not a medical device. The Application is not a medical device, healthcare service, diagnostic system, emergency service, or substitute for a qualified healthcare professional. It is not intended to diagnose, treat, cure, prevent, or monitor a disease in a clinical sense.

4.1. Entries, calculations, reminders, charts, analytics, and reports organize information supplied by the User. They are not a diagnosis, prescription, medical opinion, personalized treatment recommendation, or guarantee of any health outcome.

4.2. The User must independently verify entries, units, dates, medication names, dosages, schedules, and generated reports before relying on or sharing them.

4.3. The Application must not be used for an emergency or to delay professional care. In case of urgent symptoms, the User should contact the appropriate emergency service or a qualified healthcare professional.

4.4. Medication reminders are organizational aids only. The User remains responsible for following instructions from a healthcare professional and the official instructions for the relevant medicine.

5. License and intellectual property

5.1. For the duration of these Terms, the Rightholder grants the User a limited, non-exclusive, non-transferable, revocable, royalty-free license to install and use the Application for lawful personal purposes on devices owned or controlled by the User.

5.2. Rights in the software code, design, reference materials, trade names, and other elements of the Application belong to the Rightholder or their respective owners.

5.3. Unless applicable law expressly permits otherwise, the User may not distribute the Application or modified copies, circumvent technical restrictions, interfere with the Application or advertising SDK, extract source code, or use the Application to violate third-party rights.

5.4. The User retains rights in entries, photographs, notes, and other materials added by the User. Local storage does not transfer intellectual property rights, access to the contents, or a right for the Rightholder to use them outside the Application’s functions.

6. User local data, exports, and data protection

6.1. The User independently processes and stores core diary data on the User’s device with the Application. As part of the core functions, the Rightholder does not collect, receive, view, use, or store diary contents on its infrastructure. The support action only opens an external email client with a draft; the Rightholder receives the email only after the User independently sends it.

6.2. Uninstalling the Application, clearing its storage, resetting, damaging, or losing the device may permanently remove data and locally recorded report credits. The User is responsible for physical and system security of the device and for any export copies created by the User.

6.3. The User decides whether to create an export or report, where to store it, and to whom it is sent. After the User selects another application, cloud drive, email service, messenger, or recipient, further processing is governed by that party’s terms and privacy policy.

6.4. The Application does not add diary contents, photographs, reports, symptoms, diagnoses, medication, food information, notes, or other local data to the prepared email and does not send the email automatically. The User independently reviews and edits the draft before sending. The support channel is for technical and organizational questions. The User must also not import or distribute unlawful material, third-party personal data without an appropriate legal basis, malicious files, or material that infringes the rights of others.

7. Advertising and additional report credits

7.1. The Application is provided free of charge and contains banner and native advertising using Yandex Mobile Ads SDK. Rewarded advertising may also be available. Ad format, content, personalization, and actual availability depend on region, the User’s setting, advertising inventory, network and technical conditions, and applicable law.

7.2. Before the first advertising request, the User receives a separate disclosure and a personalization choice where required by law, store rules, or the advertising service. The User may allow personalization or choose advertising without personalization. In either case, banner and native advertising remain part of the free Application; there is no user-selectable mode that disables all advertising. Additional consent procedures or distribution restrictions may apply in certain regions.

7.3. The User is not required to click or interact with advertisements. A rewarded advertisement starts only after a separate express User action. A reward is credited only after confirmation by the advertising SDK and may be unavailable because no suitable advertisement is available, there is no network connection, or a technical error occurs.

7.4. As of this version, the User may generate one report without viewing an advertisement. Viewing a confirmed rewarded advertisement may make one additional report available, subject to technical limits shown in the Application.

7.5. Advertisements are supplied by advertisers and the advertising service. Display of an advertisement does not mean that the Rightholder endorses the advertised product, service, or claim. The User should independently review any offer and the advertiser’s terms.

  • a report credit is not money, a digital asset, a purchased product, or a paid service;
  • it has no cash value and cannot be sold, transferred, exchanged, or redeemed for money;
  • it is recorded locally and may be lost when Application data is cleared, the Application is reinstalled, or the device is changed;
  • the Rightholder does not guarantee continuous advertising availability or a particular advertising reward.

8. Permissions and third-party services

8.1. The Application may request only permissions required for selected functions, such as the camera or system photo picker, notifications, exact reminders, and Android biometric authentication. Refusal affects only the related function, except where the function is technically impossible without the permission.

8.2. Internet access is required to load advertising and online materials. The Android advertising ID permission may be added by the advertising SDK and is used for personalization and measurement only as permitted by applicable law, system settings, and the User’s selected setting. Turning personalization off does not disable banner and native advertising.

8.3. Android, the device manufacturer, an application store, Yandex Mobile Ads SDK, advertisers, the recipient application for an exported file, and other third parties operate under their own terms. The Rightholder controls the selection and configuration of embedded components to the extent required by law but does not operate independent third-party systems and does not automatically receive files that the User sends to a selected recipient.

9. Updates, availability, and changes

9.1. The Rightholder may release updates, correct errors, change the interface and reasonable technical limits, and discontinue support for outdated versions. An update may be necessary for compatibility, security, or store compliance.

9.2. To the extent permitted by law, the Application is provided “as is.” The Rightholder aims to keep it operational but does not guarantee uninterrupted, error-free, or identical operation on every device, continuous advertising availability, or continued compatibility after changes to Android or third-party services.

9.3. Material changes to these Terms will be published on the website and, when reasonable and technically possible, communicated in the Application before they apply. Continued use after an updated version takes effect constitutes acceptance; a User who disagrees may stop using the Application.

10. Liability

10.1. Each party is responsible for breach of its obligations under applicable law. Nothing in these Terms excludes or limits liability that cannot lawfully be excluded or limited.

10.2. To the extent permitted by law, the Rightholder is not liable for:

10.3. This section does not reduce mandatory consumer rights that apply to the particular relationship.

  • medical, household, or other decisions made on the basis of local data, automated displays, or reports whose contents the Rightholder does not receive or verify;
  • inaccurate source data, incorrectly selected units, dosages, schedules, or recipients of an exported file;
  • loss of local data caused by deletion, clearing, reset, device failure or loss, malicious software, or User action;
  • failure of Android, an application store, an advertising network, an internet connection, a device manufacturer, or another independent service;
  • the content or performance of an advertiser’s offer where the Rightholder is not the seller or provider of the advertised product or service.

11. Ending use

11.1. The User may end these Terms at any time by ceasing use and uninstalling the Application. Before uninstalling, the User should independently export any data they wish to keep.

11.2. The Rightholder may restrict distribution or support where required by law, security, store rules, or discontinuation of the project. This does not create an obligation to remotely restore local User data.

11.3. Provisions concerning intellectual property, liability, governing law, and any provisions which by their nature should survive remain effective after termination.

12. Governing law and disputes

12.1. These Terms are governed by the laws of the Russian Federation. If mandatory law in the User’s country of residence grants additional rights, these Terms do not limit those rights.

12.2. Before commencing proceedings, the User may send a question or claim to support@gastrodnevnik.ru. A pre-action procedure is mandatory only where expressly required by applicable law.

12.3. A dispute is heard by a competent court under applicable procedural law. These Terms do not impose exclusive jurisdiction that would deprive the User of a choice of forum granted by mandatory law.

13. Contact, language, and versions

13.1. If the Russian and English versions conflict, the Russian text prevails unless mandatory applicable law requires otherwise.

13.2. If a provision is invalid or unenforceable, the remaining provisions remain in effect. Failure to exercise a right is not a waiver of that right.

  • Rightholder: Individual Entrepreneur Chaplygin Artem Eduardovich
  • TIN (INN): 463252089851
  • OGRNIP: 326460000030126
  • Email: support@gastrodnevnik.ru