ReMatter

Privacy Policy

Last updated: October 24, 2026

ReMatter (“the app”, “we”) is a local-first utility for archiving the Matter commissioning QR codes that ship on smart-home devices. This policy explains what data the app handles and why. The short version: your data stays on your device, and we do not operate any servers that receive it.

What we store, and where

When you scan or enter a Matter pairing code, ReMatter saves the decoded data (such as the device discriminator, passcode, and a label you choose) in a database stored locally on your device. We have no cloud and no server that receives or syncs your devices.

The app keeps its database out of cloud and computer backups on both platforms. On Android, it opts out of Google’s automatic backup and device-to-device transfer. On iPhone, it excludes the database from iCloud and computer backups. So the database on your phone is the only copy, and the Backup & Restore file (below) is the way to keep or move your codes.

If you uninstall the app without making a backup, this data is deleted by the operating system.

Camera

ReMatter uses your device camera only to scan QR codes while you have the scanner open. Camera frames are processed on-device to read the code. Images are not stored, uploaded, or transmitted anywhere.

Backup & Restore

ReMatter offers a free Backup & Restore feature. When you create a backup, the app writes a file that you save or share through your device’s own sharing options (for example to your Files app or cloud drive of choice). We never receive this file. Where it goes after you export it is governed by whichever service you choose to store it in.

Purchases

ReMatter Pro is an optional one-time in-app purchase. It removes the free limit on how many codes you can save and unlocks a few extras. Purchases are processed through Google Play Billing on Android or the App Store on iPhone, and managed using RevenueCat, our purchase infrastructure provider. To validate and restore your purchase, these services process limited data such as a store purchase token or receipt, an anonymous app-user identifier, and basic device and country information. They do not receive any of your archived Matter codes.

We give early access testers a one-time link. When you open it and tap Show my code, our website (rematter.app, hosted by Cloudflare) gives that link one Google Play or App Store code and records when the link was opened and for which store. We keep no email address, IP address or other personal data for this. Your browser keeps the code on your device, so the page can show it again after a reload. The page uses Cloudflare Turnstile to block automated requests. Cloudflare hosts the site and runs Turnstile. To deliver the page and block bots, it processes your IP address and browser details under its own privacy policy.

The code is a $0 purchase of ReMatter Pro in your store account, handled like any other purchase (see Purchases above).

Free Pro code for testers

On Android, a ReMatter build from the Google Play closed test offers testers a free Pro code in Settings. To check that you are a tester, the app asks Google Play Integrity for a token that says whether Google Play installed this copy of the app. The app sends that token, its anonymous RevenueCat app-user identifier and the Android ID that Android gives ReMatter on your phone to our website. The website asks Google to read the token, and asks RevenueCat whether you already own ReMatter Pro. If you claim a code, we keep the code with the time of the claim and a hash of your Google Play order number if you bought Pro, or else of the Android ID, so that you see the same code again and each phone gets one code. We keep no email address, IP address or Matter code for this.

What we do not do

Children

ReMatter is a utility app and is not directed at children under 13. We do not knowingly collect personal information from children.

Changes to this policy

If this policy changes, we will update the date at the top of this page. Material changes may also be noted in the app’s release notes.

Contact

Questions about privacy? Email support@rematter.app.