Your privacy matters. This Privacy Policy explains what information Rytmo ("the App") collects, how it is used, and your rights regarding that information. The App is developed and operated by Toni Marence ("we", "us", "our"), reachable at app@marence.at.
We follow the principles of data minimisation and privacy by design: we only collect what is strictly necessary, and we never sell your data.
Rytmo stores certain data locally on your device to provide its core functionality. Unless a specific feature below states otherwise, that data is not sent to servers operated by the Developer.
Rytmo stores your habits, schedules, completions, notes and settings on your iPhone using Apple’s SwiftData. If iCloud is enabled for Rytmo, this data is synced through your private iCloud (CloudKit) database so it is available on your other devices. This database belongs to your Apple Account; the Developer cannot access it. iCloud is operated by Apple under Apple’s Privacy Policy.
If you link a habit to Apple Health, Rytmo asks for read-only access to the specific health types you choose (steps, walking and running distance, active calories, exercise minutes, mindful minutes, workouts, sleep or water - for example what apps like Headspace, Strava or Sleep Cycle save to Health). This data is read on your device only to check whether a habit’s goal was reached. It is never sent to the Developer or any third party, never used for advertising, and Rytmo does not write data to Apple Health. You can revoke access at any time in the iOS Settings or Health app.
Two optional features use Apple’s Screen Time access (Family Controls): checking a habit off after you have spent a minimum time in an app you chose (for example five minutes in a language app), and app locks, which keep apps you chose locked until the habits you selected are done for the day. Rytmo asks for Screen Time access the first time you use one of them.
You pick the apps, categories or websites in Apple’s own picker. Rytmo receives them as tokens that only have a meaning on your device; it cannot read which apps they stand for. iOS measures the time itself and only tells Rytmo when the minimum you set has been reached. Rytmo cannot see your Screen Time history, how long you use an app, or what you do in other apps.
Your selection, the minimum time and your app locks are stored on your device only. They are not synced through iCloud and are never sent to the Developer or any third party. You can remove a link or a lock in Rytmo, and revoke Screen Time access at any time in the iOS Settings under Screen Time.
For a “call someone” habit you choose people in Apple’s contact picker. Rytmo does not ask for access to your contacts and cannot read your address book. Only the name, phone numbers and email addresses of the people you pick are copied into the habit. They are stored with your habits on your device and, if iCloud is enabled for Rytmo, in your private iCloud database. They are never sent to the Developer.
When you start a call from Rytmo, iOS places it through the Phone or FaceTime app. To check the habit off, Rytmo uses Apple’s CallKit to see whether an outgoing call connected and when it ended. Rytmo cannot see who you are talking to, cannot hear or record calls and has no access to your call history. Only calls started from Rytmo are counted. Where CallKit is not permitted (mainland China), calls are not observed and Rytmo asks you afterwards instead.
If you add a website or video link to a habit, Rytmo loads the title of the page once so it can show it. For YouTube links the title comes from YouTube and a preview image is loaded from YouTube’s image servers; for other links the title is loaded from the website itself. The links are stored with your habits.
To show app icons, Rytmo loads the icons of the apps in its catalogue from Apple’s App Store service and keeps them on your device. This is the same list for every user and does not depend on which apps you use.
These requests go directly from your device to the respective service (YouTube/Google, Apple or the website you linked), not to the Developer. As with any internet request, that service receives your IP address and the address that was requested, and handles them under its own privacy policy.
You can link a habit to one of Rytmo’s partner apps. These are other apps by the Developer, such as QuickMath and DailyPhrase. If you create such a link, the two apps are paired through a small sync service operated by the Developer. The service stores a randomly generated pairing ID and token, and for each day the app name, the date, whether the goal was completed and progress values (for example 8 of 10 exercises). Rytmo and its widget ask the service for the current status using the pairing ID and token. The service does not store your name, email, Apple Account, device identifiers or the content of your habits.
For each link the service also stores when the partner app last reported. Once a link has ended, it stores the time it ended, which app ended it, a short reason and, if a new link replaced it, the pairing ID of the new link. These fields contain no personal data.
When you remove a link, delete or archive the habit, or turn sync off, Rytmo tells the sync service that the link has ended. If your device is offline, this message is sent once a connection is available. The partner app is then shown that the link is gone. The record of an ended link is kept so the service can tell both apps that it has ended. Sync records are not deleted automatically: they are kept until you ask us to delete them at the address below.
To know which partner apps it can offer, Rytmo fetches a list of supported apps from the sync service, at most every six hours, and keeps it on your device. This request contains no personal data. The Developer decides which apps are on the list. If an app is taken off the list, links that already exist keep working.
Two things happen on your device only and are not sent to the sync service. First, Rytmo and the partner apps share a small storage area on your device (an App Group) that lists which links exist. For each link it holds the pairing ID, the title of the habit and its goal, but no tokens, so each app can check that both sides still agree. Second, when you create a new habit for a partner app, Rytmo passes the goal and the title of the habit (up to 60 characters) to the partner app through a link on the same device.
Like any web server, the sync service keeps standard technical access logs (IP address, time and requested address) for operation and security; these are rotated and deleted automatically.
Habit reminders are scheduled as local notifications on your device. No reminder data is sent to the Developer.
Subscriptions and in-app purchases are processed entirely by Apple. The Developer does not receive your payment details; the App only checks with Apple whether a purchase is active.
If you submit a message through our contact form at apps.marence.at/apps/rytmo, we collect:
This data is stored securely on our server solely to respond to your enquiry and is deleted after it is no longer needed.
The App may use Apple's standard analytics tools (App Store Connect Analytics) which provide aggregate, anonymised metrics. We do not use third-party advertising trackers. No personally identifiable information is transmitted through analytics.
We use the collected data exclusively to:
We do not use your data for advertising, profiling, or any automated decision-making.
We do not sell, rent, or share your personal data with third parties, except as required by applicable law (e.g. a court order) or with your explicit consent.
The App is distributed through Apple's App Store. Apple may collect certain technical data as described in Apple's own Privacy Policy .
Data stored locally on your device is kept until you delete the App or clear the App's data in iOS Settings. Contact form submissions are retained for up to 12 months and then permanently deleted.
If you are located in the European Union, you have the right to:
To exercise any of these rights, please contact us at app@marence.at. We will respond within 30 days.
Rytmo is not directed at children under 13. We do not knowingly collect personal information from children. If you believe a child has submitted personal data to us, please contact us immediately.
We may update this Privacy Policy from time to time. Changes will be posted at this URL with an updated date. We encourage you to review this page periodically.
Questions about this Privacy Policy? Contact us:
Toni Marence
app@marence.at
apps.marence.at