Privacy Policy

Effective date: 04-07-2026 · Applies to the Super Interval Timer mobile app and superintervaltimer.app

Summary

• No ads. We never use your data for advertising or marketing. No selling of data, no data brokers.
• Your workouts, presets, history and settings are stored locally on your device.
• We collect a small amount of technical data to run the free trial, understand app health and improve the app.

Data we collect

Data	Why	Where it goes
Device identifier (Android device ID)	Enforce the 14-day free trial across reinstalls; link your Pro purchase to your device	Google Firebase (Firestore)
App usage events (e.g. workout started/completed, settings changed) and total in-app time per session	Understand which features work and improve the app	Google Firebase (Analytics / Firestore)
Crash and error reports	Fix bugs	Google Firebase Analytics
Purchase confirmation (order ID, amount)	Activate Pro after you buy it	Google Firebase (Firestore); the payment itself is processed by Polar

Data we do NOT collect

No name, no contacts, no precise location or GPS, no photos, no microphone, no health or fitness measurements, and no advertising identifiers.

We do not collect your email address. If you sign in with Google for backup, your Google email is used only on your device to keep you signed in — it is never sent to our servers. If you buy Pro, any email you enter goes directly to our payment processor (Polar) for your receipt, not to us.

Your workout content (exercise names, durations, history) never leaves your device unless you choose to use Backup.

Optional: Google Drive backup (sync)

Backup is entirely optional and off by default. If you choose to enable it, here is exactly what happens:

• What is backed up: your workout database — saved workouts, exercise names and durations, workout history, and app settings.
• Where it goes: the backup travels directly from your device to your own Google Drive, into the hidden "app data" area that only this app (signed in as you) can read. It does not appear among your normal Drive files, and it does not count against your storage quota.
• What we store: nothing. The backup never passes through or rests on our servers. We have no copy, and no technical ability to open, read or share it — access requires your Google sign-in on your device.
• Your Google email: used only on your device to keep you signed in and to show which account the backup belongs to. It is saved locally on your phone and is never sent to our servers.
• When it syncs: once enabled, the app refreshes the backup automatically — after a completed workout and roughly once a day — so your latest data is always safe. Restoring on the same account brings everything back.
• Stopping and deleting: disconnect any time in Settings (automatic backups stop immediately). You can delete the backup itself from within the app, or by removing Super Interval Timer's access under your Google Account > Security > Third-party apps, which lets you delete its stored app data.

Google's own privacy policy applies to data held in your Google Drive.

Payments

Pro purchases are processed by Polar (polar.sh), our merchant of record, on their secure checkout page. We do not see or store your card details. Polar's own privacy policy applies to the payment transaction.

No advertising or profiling

Super Interval Timer contains no ads and no third-party advertising SDKs. We do not build advertising profiles, we do not track you across other apps or websites, and none of the limited data we collect is ever used for advertising or marketing — by us or by anyone else.

Your rights

Wherever you live — and specifically if you are in the UK or EU (UK GDPR / GDPR) — you can ask us to: tell you what data we hold about your device, correct it, delete it, or export it. Email ashwaryareddy@gmail.com with the subject "Data request" and, if you have it, your device ID (shown in the app's Settings). We action requests within 30 days. You also have the right to complain to your local data-protection authority.

Data retention

Trial and purchase records are kept for as long as needed to provide the service (for example, so your Pro unlock survives a reinstall). Analytics data is retained per Google Firebase's standard retention settings.

Children

The app is not directed at children under 13 and we do not knowingly collect personal information from children.

Changes

We will post any changes on this page with an updated effective date. Material changes will be highlighted in the app or on the website.

Contact

ashwaryareddy@gmail.com