Privacy Policy for Smart Toolkit: All-in-One

Last Updated: June 27, 2026

Overview

Smart Toolkit: All-in-One ("the App") is committed to protecting your privacy. The App is a fully offline collection of measurement, sensor, sound, GPS and utility tools. This Privacy Policy explains how information is handled when you use the App.

Data We Collect

Stored locally on your device only:

Saved measurements (level angles, ruler lengths, decibel peaks, etc.)
Decibel session logs (Pro)
Interval/timer presets and tool calibration values
Favorite tools and their order
App preferences (theme, units) and Pro purchase status

No personal information is required — no account creation, no email, no sign-in. There is no cloud database; nothing you create is uploaded to any server.

Device Sensors & Permissions

Some tools request a permission only when you first open that specific tool, and only to make that tool work. All sensor data is processed live on your device and is never stored or transmitted:

Camera — magnifier, mirror, QR/barcode scanner, and camera-based heart-rate. Frames are processed in real time and never saved or uploaded.
Microphone — decibel meter, tuner, and pitch detector. Audio is analyzed live for level/pitch only and is never recorded, stored, or uploaded.
Location (GPS) — speedometer, coordinates, and altitude. Your location is shown on screen only and is never stored, logged, or shared.
Motion & magnetic sensors — level, compass, vibration and metal-field tools read accelerometer/gyroscope/magnetometer values locally.

Google AdMob (Free Tier Only)

Free users see ads served by Google AdMob, which may collect a device advertising ID and general usage data for ad delivery. Upgrading to Pro removes all ads permanently. See Google's Privacy Policy.

Google Play Integrity

The App uses the Google Play Integrity API to help protect purchases and reduce fraud. This sends a device/app integrity signal to Google. It does not collect personal information. The App does not use Firebase Analytics or any usage-tracking SDK.

In-App Purchases

The one-time Pro purchase is processed entirely by Google Play. We receive only confirmation that a purchase completed. We do NOT receive your payment details, billing address, or Google account information.

Data Sharing

We do NOT sell, trade, or share your data with third parties, except Google (AdMob, Play Billing, Play Integrity) as described above, or when required by law.

Children's Privacy

This app is intended for users aged 18 and older and is not directed at children. We do not knowingly collect personal information from children.

Data Retention

All data is stored locally on your device. Uninstalling the App permanently deletes it.

Contact Us

For privacy questions, email: dev@corithmflowmatrix.com

Subject line: "Smart Toolkit - Privacy Request"

Summary: Everything stays on your device. Camera, microphone and location are processed live and never stored or uploaded. No account, no personal info. Ads only for free users.