Privacy Policy

Data not collected

Gentian does not collect your data. There is no account and no server for this app. Your pictures are turned into line art on your iPhone or iPad and are never uploaded by Gentian. Nothing is sent to us or to anyone else. In App Store terms: Data Not Collected.

Your pictures

You open a picture with the system photo picker, from Files, or by pasting one you copied. Gentian gets a copy of that one picture and no others. The picker needs no photo library permission.

Gentian keeps the copy in its own folder on your device, with the settings and erased areas for that sheet, so you can open the sheet again later. Delete a sheet in the app and its picture and lines are removed. Deleting the app removes them all.

Gentian uses no AI model and no outside service to make the lines. The work is done by code inside the app.

What else is stored on your phone

• Whether your free stencil is used. This is kept in the device keychain so that deleting and reinstalling the app does not reset it. It holds the sheet's random id and the date, and nothing that identifies you.
• Settings: units, default paper, sound and haptics.

This stays on your device. We cannot see it. Like any app's data, it can be part of the iCloud or computer backup of your device, which you and Apple control.

No analytics, no ads, no tracking

Gentian has no analytics or advertising code and no third-party SDKs. It does not track you across apps or websites. The only crash information we may get is what Apple gives developers if you chose to share crash data with app developers in your device's settings.

Permissions

• Photos, add only, asked the first time you tap Save to Photos. Gentian can add your stencil to your library but cannot read your library.

That is the only permission Gentian asks for. It never asks for your camera, microphone, contacts or location.

Purchases

Plans are bought through Apple's App Store. Apple handles the payment and we never see your payment details. The app checks with Apple which plan you have. That check is the app's only network traffic. Apple's own privacy policy covers the App Store.

Printing and sharing

When you print, the page goes to the printer you pick through AirPrint. When you tap Share PDF, the system share sheet sends the file where you choose. What happens to it there is covered by that app's own policy.

Links that leave the app

The Terms and Privacy links open these pages in a Safari sheet inside the app. If you write to us, we see your email address and what you write, and we use it only to answer you.

Children

Gentian collects no data from anyone, children included.

Changes

If this policy changes, the new version will be posted on this page with a new effective date.

Contact

support@swellstackco.com