| Aspect | Details | |--------|---------| | | Banner ads are delivered via Google’s AdMob network, which collects minimal device information for ad targeting. | | Data Collection | The free version does not require a user account, nor does it upload your music files. Only basic analytics (app start, crash logs) are sent anonymously. | | Permissions | The requested permissions are standard for a visualizer: storage (to read audio), microphone (optional), and overlay (optional). No location or contacts access. | | Security | The APK on Google Play and APKMirror is signed by the developer’s key. Verify the SHA‑256 hash (displayed on the APKMirror page) if you have security‑conscious requirements. | | Potential Issues | • On very low‑end devices, the high‑quality mode may cause lag. Switch to “Low Power” in Settings. • Some OEM custom skins (e.g., MIUI, EMUI) may block the overlay permission; you’ll need to manually enable “Display over other apps”. |
A: Contact OKM GmbH directly. Do not try random numbers. If you bought a used detector, ask the previous owner to transfer the license to you. okm visualizer 3d for android free download link