Terms of use
Last updated: 11 October 2026
Provider and scope
The provider of the Fellbert app is Patrick Gutsch, Klatschmohnweg 4, 38300 Wolfenbüttel, Germany. These terms apply to the use of the app and its associated services.
No substitute for veterinary advice
Fellbert helps you organise food, medication and observations. The app makes no diagnoses and recommends no treatment. You get the instructions for medication from your veterinary practice: dosage, frequency and duration of a treatment are determined by it alone. Check that the plan shown matches your veterinary practice’s instructions. Fellbert is not a medical device.
Reminders may fail to arrive, for instance because of your phone’s settings, because the device is off, or because battery-saving features intervene. Do not rely on them alone for important doses.
Several carers and synchronisation
If several people look after a pet, Fellbert synchronises their phones over the internet. This usually happens within seconds but is not guaranteed: without an internet connection, in flight mode or when a server cannot be reached, a phone does not see what was ticked off on another one. Notifications and widgets may also show an older state.
A dose may therefore be shown as open although it has already been given. Anyone relying on this display alone may, in the worst case, give it a second time. The app shows when it last synchronised; it cannot know whether a dose was actually given.
Agree clearly who takes care of which dose and how you record that it was given. If anything is unclear, clear it up before giving another dose. Before a pet is shared for the first time, and before joining as a carer, the app shows this notice and asks for confirmation.
If two people tick off the same dose, Fellbert shows this and asks. Fellbert can only detect double ticks once both entries have been transmitted. The app cannot determine whether a medication was actually given.
Account
The core functions work without an account. To synchronise your own devices and to share your pets you need an account with an email address. Invited people can join as guests without registering an email address. For shared care the owner needs Premium. Their guests do not need a subscription of their own.
Fellbert is aimed at adults. You may only use access as an owner or as an invited carer if you are of full legal age. You are responsible for keeping your password secret and for whom you share a pet with.
Fellbert Premium
Paid features are: synchronisation with further devices and shared care, the history and vet report beyond the last seven days, the analysis, and questions of your own beyond the free list. Two billing periods are offered, monthly and annual. The applicable prices are shown in the app and in the store in your local currency.
Your subscription is charged in the billing rhythm you chose and continues until you cancel it. You manage and cancel it through the store in which you took it out, in the settings of your Apple or Google account, not with us. Which cancellation options and refund rules apply depends on the terms that apply there for your country and on your statutory rights.
Regarding a free trial period: it turns into a paid subscription at the end unless you cancel in the store in good time beforehand. The store tells you until when that is possible; Apple states at least 24 hours before the end of the trial. Whether you get a trial period is decided by the store.
Purchase and payment take place through the store in which you take out your subscription. There you also find the information on and the ways to withdrawal, cancellation and refund. For questions about Fellbert you can reach us at support@fellbert.app. Your statutory rights against the contracting party responsible in each case remain unaffected.
When you subscribe we record which version of these terms applied and when. The version is shown with its date at the purchase button. We send you earlier versions on request.
If your subscription ends, your data remains on the device and the app stays usable. Every day is still recorded; synchronisation, the history beyond the last seven days, the analysis and your own questions pause until you subscribe again.
When the subscription ends, syncing between your devices and shared care also pause: anyone caring for a pet with you no longer sees your new entries, and you do not see theirs. We keep the copy of your pet data in your account for 30 more days and delete it afterwards, at the latest 45 days after the end. If you subscribe again before then, it is kept. The data on your devices is not affected, and you can save it as a file at any time, even without a subscription.
Your obligations
- Do not misuse the app, in particular do not attempt to access other people’s data or circumvent the access rules.
- Only enter data you are entitled to, for other people’s pets, that means with the owner’s consent.
Liability
We are liable without limitation in cases of intent and gross negligence, and for injury to life, body or health. In cases of simple negligence we are liable only for the breach of material contractual obligations, limited in amount to the typical, foreseeable damage. Otherwise liability is excluded. Liability under the German Product Liability Act remains unaffected. Your statutory rights in the event of defects and our statutory obligations to provide necessary updates remain unaffected.
Availability and changes
Online synchronisation may be interrupted temporarily by maintenance or faults. We limit interruptions to what is necessary and inform you about foreseeable material restrictions. Your statutory rights in the event of defects remain unaffected.
We provide the updates that are necessary for Fellbert to remain usable in conformity with the contract. Beyond that we may adapt features for the following reasons: changed legal requirements, necessary adaptations to operating systems or technical interfaces, and defence against new security risks. This does not cause you any additional costs. We inform you about the change in a way that is easy to understand. If it impairs your access or use more than insignificantly, we inform you reasonably in advance on a durable medium about its content, its timing and your rights. You can then end the contract free of charge within 30 days. The period begins with the information, or with the change itself if that comes later. This right does not apply if we keep unchanged use available to you at no additional cost.
If an older app version can no longer be synchronised because of a security problem or a technical incompatibility, we inform you about the necessary update and its consequences. As far as security permits, we give you reasonable time for it beforehand. Until you update, synchronisation may be paused. Your local plan remains accessible; reminders set up locally are not affected.
Final provisions
German law applies. If the user is a consumer, mandatory consumer protection provisions of their country of residence remain unaffected.
We are neither willing nor obliged to take part in dispute resolution proceedings before a consumer arbitration board.
Fellbert