Rhythm Privacy Policy

The short version

• Rhythm has no account, no sign-up and no server run by us.
• What you record stays on your iPhone. If you turn on iCloud sync, a copy is kept in your own iCloud account, where we cannot read it.
• Rhythm contains no analytics, no advertising, no tracking and no code from other companies.
• We do not sell, share or use your data, because we never receive it.
• You can export everything or delete everything at any time in Settings.

What Rhythm stores

Rhythm stores only what you create while using it:

• Your fasting plan and your usual eating times.
• The times you tapped Start eating and Done eating, and any times you corrected. Together these are your fasting history.
• Changes you made to a single day, such as a later window or a day without fasting.
• The glasses of water you logged.
• Meal photos you took or chose, the time of each, and a one-word label if there is one.
• Coins, Kapi's level, daily gifts already received, and your best score in each mini-game.
• Your settings: reminders, appearance, sound, animation and similar choices.

Rhythm does not ask for your name, e-mail address, age, weight, height or any body measurement, and it has no place to enter them. It does not use your location, your contacts, your calendar or the microphone. It does not use Apple Health and reads or writes nothing there.

Where it is kept

On your iPhone. Everything above is saved in the app's own storage on your device. This is the only copy unless you turn on iCloud sync.

In your own iCloud, if you choose. Settings → iCloud sync → "Sync with iCloud" is off until you turn it on. When it is on, your fasting history, day changes, water log, meal photos, coins and Kapi's progress are copied to the private database of your own iCloud account, so that your other devices signed in to the same account can show them. Apple stores this data for you under Apple's own terms and privacy policy. We have no access to it: we cannot see it, read it, copy it or delete it. Some settings and your mini-game best scores stay on the device and are not synced. You can turn sync off again at any time; the change takes effect the next time Rhythm opens.

Nowhere else. Rhythm does not send your data to us or to anyone else. It contains no way to do so.

Meal photos and the camera

Rhythm asks for the camera only when you first tap the camera button to photograph a meal, and uses it only for that. You can decline and still choose photos from your library, which uses the iPhone's own photo picker and gives Rhythm only the photos you pick. You can also use Rhythm without any photos.

When a photo is saved, Rhythm keeps a reduced copy and a small thumbnail and removes the information embedded in the file, including the location where it was taken. The time the photo was taken is kept as the time of the meal. Photos stay on your iPhone and, if iCloud sync is on, in your private iCloud. They are never uploaded to us.

On iPhones running iOS 27 with Apple Intelligence available, Rhythm may ask the language model that Apple builds into the iPhone to suggest one word for the dish in a photo. This happens entirely on your device. The photo is not sent to us, to Apple's servers or to any other service for this, and the label never includes calories or nutrition. You can change or remove a label, delete any photo, or delete all meal photos in Settings → Meal photos.

Notifications

If you allow notifications, Rhythm can remind you when your eating window opens, when it closes, and when a fast reaches its planned end. These reminders are scheduled on your iPhone itself; no server sends them, and they are used for nothing else. You can turn each one off in Settings → Reminders, or turn off notifications for Rhythm in iOS Settings.

If iCloud sync is on, Apple sends your device silent signals when your data changes on another of your devices. They show nothing and carry no content from us.

Widget, Live Activity, Control Center and Siri

The Home Screen widget, the Live Activity on the Lock Screen and in the Dynamic Island, the Control Center control and the Siri and Shortcuts actions all read and write the same data on your device. Nothing is sent anywhere to make them work. When you speak to Siri, Apple handles your request under Apple's privacy policy; Rhythm receives only the action, for example "done eating".

Keep in mind that a widget or a Live Activity can be seen by anyone who can see your screen, including the Lock Screen. You can turn the Live Activity off in Settings → Lock Screen.

What we do not do

• No accounts and no sign-in.
• No analytics or usage measurement of our own.
• No advertising and no advertising identifiers.
• No tracking across apps or websites.
• No third-party software development kits.
• No sale or sharing of personal data.
• No in-app purchases in this version.

What Apple may tell us

Apple runs the App Store and iCloud. If you have chosen to share analytics with app developers in your iPhone's settings, Apple may show us combined statistics, such as the number of downloads, and crash reports that do not identify you. This comes from Apple, not from code in Rhythm, and you control it in iOS Settings → Privacy & Security → Analytics & Improvements.

If you contact us

If you write to us, we receive your e-mail address and whatever you put in the message. We use it only to answer you, we do not add you to any list, and we delete the correspondence when it is no longer needed to help you, or sooner if you ask. Please do not send health information you would rather keep private; we do not need it to help.

Your choices

• Export. Settings → Your data → Export data produces a file with your plan, fasting history, water log, coins and Kapi's progress; if you have meal photos, they are included in the same archive.
• Delete everything. Settings → Your data → Delete all data removes your fasting history, water log, meal photos, settings, coins and Kapi's progress from your iPhone and, if sync is on, from your iCloud. It cannot be undone.
• Delete only the photos. Settings → Meal photos → Delete all meal photos.
• Stop syncing. Turn off "Sync with iCloud" in Settings.
• Remove the app. Deleting Rhythm from your iPhone removes the data stored on the device. A copy in your iCloud, if you used sync, stays until you use "Delete all data" before removing the app, or remove Rhythm's data from iCloud in iOS Settings, under your name → iCloud, where iCloud storage is managed.

Because your data is held by you and not by us, we cannot retrieve, correct or delete it on your behalf. The controls above let you do each of these yourself. If you live in a place that gives you legal rights over your personal data, such as the European Union, the United Kingdom or California, those rights apply to the little we hold, which is only the correspondence you send us, and you can use them by writing to the address below.

How long data is kept

Data on your iPhone stays until you delete it or remove the app. Data in your iCloud stays until you delete it or close your iCloud account. We keep nothing ourselves except messages you send us, as described above.

Security

Your records are protected by your iPhone's passcode and encryption, and in iCloud by the security of your Apple Account. Rhythm adds no account or password of its own.

Children and people under 18

Rhythm is not directed to children, and it is not intended for anyone under 18. Intermittent fasting may be unsuitable for people under 18, and the app says so before it is first used. We do not knowingly collect personal information from anyone, including children. If you believe a child has sent us a message containing personal information, write to us and we will delete it.

Health information

Rhythm is a wellness app, not a medical device, and it does not give medical advice. The policy above applies to everything you record in it. We never receive that information and make no use of it.

Changes to this policy

If the app changes in a way that affects your privacy, we will update this page and change the effective date at the top before the change reaches you.

This web page

This page is a plain document. It sets no cookies and runs no scripts. The web server that hosts it may keep ordinary server logs, such as the time of a visit and an IP address.

Contact

Zhan Rushman LLC (MATRIXBUNNY)
E-mail: support@matrixbunny.com