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Delete data in Percemo
Percemo has no online account. This page explains how to remove its data from your device.
Version: 23 October 2026
Remove the data from your device
Single things in the app: delete a calculation in the history or the whole history ("Clear all"), remove products or empty the shopping basket, and delete a preset by holding it. To remove all data of the app, open Apps > Percemo > Storage in the Android settings and clear the storage, or uninstall the app (the menu names can differ slightly from phone to phone). This removes your calculations, history, basket, pins, presets, settings, the purchase check, your ad choices, the ad counters, the data for Pro offers and the export file. A copy in your Android backup stays in your Google account until you delete it there (Android settings > Google > Backup). Files you shared stay with the app you shared them with. Your Pro purchase stays with your Google account. Data that the ad services received stays with them; you can reset or delete the advertising ID in the Android settings.
Exported files
Only when you tap: "Copy result" puts the result text on the Android clipboard, and Share sends it through the Android share menu to the app you choose. With Pro, or once after a reward video you asked for, you can export your history as a spreadsheet file (CSV) through the Android share menu; the file waits in the app's own cache until your next export, which deletes it first. The app you pick receives the text or the file. Nothing goes to us.
Backups
Android backup is switched on for two files of the app: your calculations, history, shopping basket, pinned calculators, presets, settings, hints and the rewards from ad videos (no ads until, exports left), and the design settings. It is your own backup in your Google account and the transfer to a new phone; we have no access to it. Not backed up: the purchase check (Google Play is asked again on the new phone), your ad choices, the ad counters, the data for Pro offers and the export file. You can switch backup off in the Android settings.
Emails you sent us
Emails you sent us are stored separately from the app. To have them deleted, write to info@farusone.com.
Data of the ad services
We do not receive the data the ad services collect (see the privacy policy, "External services"). Write to info@farusone.com and we answer within one month: we delete what we hold about you, explain which service is responsible and forward your request to it if you wish.
Right away in the app: Settings > "Privacy choices for ads" withdraws your consent and stops all ads. You can also delete the advertising ID in the Android settings. With Pro the app no longer loads ads at all.