Privacy Policy
Last updated September 10, 2026
Kahei is built to work without collecting your data. This policy explains what that means in practice.
The short version
- We do not collect, store, or share any personal information.
- Everything the camera sees is processed on your device and never leaves it.
- There are no accounts, no ads, no analytics, and no third-party trackers.
What stays on your device
Camera. The live camera feed and any photo you capture are read entirely on your iPhone using on-device text recognition to find the price. Images and video are never uploaded to us, saved to any server, or shared with anyone.
Scan history.Recent scans are saved only in the app's storage on your phone. We cannot see them. You can delete individual entries or clear the whole history in the app, and removing the app deletes them.
Settings. Your home and trip currency and your preferences are stored locally on your device.
What the app sends over the network
Exchange rates only. To keep conversions current, the app periodically downloads a table of daily exchange rates from its rate service. That request is for public rate data. It does not include your identity, your scans, your photos, your location, or any personal information.
If no rate service is configured, the app converts using exchange rates bundled with it and makes no network requests at all.
What we do not do
- We do not collect personal information.
- We do not track you across other apps or websites.
- We do not use advertising or analytics SDKs.
- We do not sell or share data, because we do not have any.
Children
Kahei is suitable for all ages and collects no data from anyone, including children under 13.
Changes to this policy
If this policy changes, we will update the date at the top of this page. Material changes will be reflected here before they take effect.
Contact
This app is published by Design Bun Limited. Questions about privacy? Email support@kahei.app. See also our support page.