Last updated: August 2026 — this policy applies to the iOS app Interim only. The website has its own privacy policy; so do the other apps, Neuron and Tide.
Shiwani Goswami, Stover Str. 24b, 21423 Drage, Germany. Email: app@goswami.de. Where this policy says “we”, it refers to the controller named here.
Interim is a self-contained app with no user account and no registration. Everything you record in the app is stored exclusively on your own device.
The app contains no code for network connections, no analytics or tracking libraries, no advertising networks and no third-party libraries. There is no server of ours that data could be sent to.
It follows that we receive no personal data from your use of Interim. To that extent no processing by us takes place; the data remains in your hands and under your control.
Your fasting periods with their start and end times, the fasting window you have chosen (16:8 or 18:6, for example), the history of recent weeks, your streak and your settings.
This information is kept in a shared app container on your device so that widgets and the Live Activity can display the same values. The container is managed by iOS and does not leave the device.
Interim requests exactly one Health permission: read body weight. It reads weight measurements from the past 90 days so that it can show your weight alongside your fasting times.
Interim writes nothing to Apple Health and does not request write access either. No other health data — sleep or activity, for instance — is requested.
Access only takes effect once you explicitly confirm it in the iOS dialogue. The legal basis is your consent under Art. 6(1)(a) GDPR and, because health data is involved, additionally Art. 9(2)(a) GDPR. You can withdraw it at any time in the iOS Settings under Privacy & Security → Health. The data stays on your device; we have no access to it. Without this permission the app works in full, only without the weight history.
If you would like them, Interim reminds you when your fasting window begins and ends. These notifications are scheduled locally on your device; there are no push servers and no device identifiers that would be transmitted to us. Here too the legal basis is your consent given through the iOS dialogue (Art. 6(1)(a) GDPR), which you can withdraw at any time in the iOS Settings.
The running timer can appear as a Live Activity on the Lock Screen and in the Dynamic Island, and as a widget on the Home Screen. The values shown there come from the local app container on the same device and are not transmitted anywhere.
Interim includes an optional tipping feature. Payment is handled exclusively by Apple; we receive neither your payment details nor your name, only aggregated sales reports from Apple that contain no personal reference.
Apple is responsible for download, purchase and billing in the App Store. If you use your device's iCloud backup, it may also cover app data; Apple's privacy policy applies to that. We have access to neither.
If you remove Interim from your device, the associated local data is removed with it. Because Interim writes nothing to Apple Health, no data from the app is left behind there.
You are reading this page over the internet. It is hosted by Vercel Inc., 340 S Lemon Ave #4133, Walnut, CA 91789, USA, and server log files are created in the process (IP address, time of access, page requested, volume of data transferred, referrer, browser, operating system). The legal basis is Art. 6(1)(f) GDPR. A data processing agreement under Art. 28 GDPR is in place with Vercel; the transfer to the USA is based on the European Commission's standard contractual clauses and on Vercel's certification under the EU-US Data Privacy Framework. The website privacy policy sets this out in full.
Automated decision-making, including profiling (Art. 22 GDPR), does not take place. You are under no statutory or contractual obligation to provide us with personal data. The only recipients of data are our hosting provider Vercel as a processor and — for downloads and tips — Apple as a separate controller.
You have the right of access (Art. 15), rectification (Art. 16), erasure (Art. 17), restriction of processing (Art. 18), data portability (Art. 20) and objection (Art. 21 GDPR). Consent you have given — for notifications or Health access, for example — can be withdrawn at any time with effect for the future in the iOS Settings. You also have the right to lodge a complaint with a data protection supervisory authority (Art. 77 GDPR). The authority responsible for us is: Der Landesbeauftragte für den Datenschutz Niedersachsen (State Commissioner for Data Protection of Lower Saxony), Prinzenstraße 5, 30159 Hannover, Germany, www.lfd.niedersachsen.de.
Right to object: where we process data on the basis of Art. 6(1)(f) GDPR, you may object at any time on grounds relating to your particular situation (Art. 21 GDPR).
For any request concerning your rights, please write to app@goswami.de.
We update this policy when the app or the legal situation changes. The version published here is the one that applies.
This English text is a translation of the German original, which is the legally binding version. We have translated it carefully rather than mechanically — if you spot a passage where the two differ in substance, please tell us at app@goswami.de and we will correct it.