Grainera

Privacy Policy

Last updated: 23 June 2026

This Privacy Policy explains how Grainera (the “App”) handles your information. Grainera is an on-device iOS photo-filter app operated by Tobias Zehndbauer (see the Impressum for full provider details). By using the App you agree to the practices described here.

Summary

Photos and image content

All photo editing and filtering is performed locally on your device. Images you open or edit in Grainera are not transmitted to us or to any third party, and are not stored on any server we control. The App accesses your photos only with the permission you grant through iOS, and only for the purpose of editing them within the App.

Edited images are only saved where you choose — back to your device photo library — or shared via the iOS share sheet to an app you select. Grainera does not maintain its own cloud gallery and does not store your images on any server. When you use the share sheet, the image is handed to the destination app you pick, which then handles it under its own terms.

Information we do not collect

Grainera does not require you to create an account and does not itself collect personal information such as your name, email address, or contacts. Grainera contains no analytics, crash-reporting, or advertising SDKs. The only third-party service integrated is RevenueCat, used solely to manage purchases and subscriptions (described below).

Purchases and subscriptions

Grainera offers paid options: a weekly subscription, a yearly subscription (with a 3-day free trial), and a one-time lifetime purchase. Purchases are processed through the Apple App Store and managed with the help of RevenueCat, a subscription-management service.

To manage your entitlements (i.e. to know which purchase you own), RevenueCat receives a randomly generated, anonymous app user ID together with purchase and receipt data from the App Store. No photos or image content are ever sent to RevenueCat. RevenueCat does not receive information that directly identifies you by name.

Apple processes the payment and the transaction data associated with your Apple ID under Apple’s standard App Store practices. The exact data Apple collects for App Store transactions is governed by Apple’s policies.

These third parties process data under their own privacy policies:

Permissions the App may request

Grainera may request access to your Photo Library — to import photos to edit and to save edited images. You can grant or revoke this permission at any time in the iOS Settings app. Grainera uses it only for editing within the App; your photos are processed locally and are not transmitted to us.

Data retention

Because we do not collect personal data on our own servers, we do not retain personal data about you. Purchase and entitlement data held by Apple and RevenueCat is retained according to their respective policies.

Children’s privacy

Grainera is rated 4+ and is intended for a general audience. It is not directed at children and does not knowingly collect personal data from children.

Your rights

Depending on where you live (for example, under the EU/EEA General Data Protection Regulation), you may have rights to access, correct, or delete personal data, or to object to certain processing. Because Grainera does not itself hold personal data about you, such requests will in most cases concern data held by Apple or RevenueCat and should be directed to them. You may also contact us at the address below and we will assist where we can.

Changes to this policy

We may update this Privacy Policy from time to time. Material changes will be reflected by updating the “Last updated” date above.

Contact

Questions about this Privacy Policy can be sent to info@grainera.app. Postal contact details are listed in the Impressum.

(This policy should be confirmed by the operator — e.g. via a German privacy generator or legal review — before App Store submission.)