ToolHub — Privacy Policy

Last updated: October 13, 2026 · Greyline Studio

ToolHub ("the App") is an offline-first utility application. This policy explains what information the App handles and why.

ToolHub does not require an account and does not operate any servers. Everything you create in the App — notes, voice recordings, favorites, XP, streaks, badges, settings — is storedonly on your device. We never see, collect, or transmit your personal data because there is nowhere for it to go.

The App displays ads provided by Google AdMob. AdMob may collect device identifiers (such as the advertising ID), approximate location, and app interaction data to serve, personalize, and measure ads, in accordance withGoogle's Privacy Policyand theAdMob privacy & messaging guidance. You can opt out of personalized advertising in your device's system settings (Settings → Privacy → Ads). A one-time in-app purchase can remove ads entirely.

Purchases (e.g. "Remove Ads") are processed entirely by Google Play Billing. We do not receive or store your payment information.

• Camera— used only inside the QR Scanner and Magnifier tools, when you open them. Images are processed on-device and never uploaded.
• Microphone— used only inside the Voice Recorder and Sound Meter tools, when you open them. Audio is stored locally on your device.
• Flashlight (torch)— used only by the Flashlight and Morse Flasher tools.
• Vibrate— used for haptic feedback in the Fake Call, Timer, and Reaction Test tools.
• Internet— used to fetch currency exchange rates (public API, no personal data sent) and to load ads. Every other tool works fully offline.

• Google AdMob (advertising) —privacy policy
• Google Play Billing (purchases) —privacy policy
• Exchange-rate sources (rates only; requests contain no personal data) —open.er-api.comandcdn.jsdelivr.net (currency-api)

ToolHub does not knowingly collect personal information from anyone, including children under 13, because it collects no personal information at all.

If this policy changes, the updated version will be posted at this address and the "Last updated" date revised.

For privacy questions, contact us at:wegreylinestudio@gmail.com