Only Hz: Solfeggio Frequencies is a music & audio app developed by Only Labs.
Download Statistics
Only Hz: Solfeggio Frequencies has been downloaded 32 times. In the last 30 days, the app was downloaded 32 times.
User Ratings
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App Information
Only Hz: Solfeggio Frequencies is FREE to download. The APK download size is 6.02 MB. The latest version available is 1.0.13. The last update was on September 9, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play since September 2026.
Description
Only Hz plays pure sine-wave tones for meditation, mindfulness and quiet focus. Choose an individual frequency or follow a Solfeggio journey through nine tones.
Two tones to explore Listen to 432 Hz and 528 Hz in free three-minute sessions. Replay either tone as often as you like.
Full access An optional one-time in-app purchase unlocks: • All 20 pure tones • Timers of 3, 5, 10, 15, 30 and 60 minutes • Continuous playback of individual tones • Solfeggio 9 journeys lasting 15, 30 or 60 minutes • A seekable journey timeline
Google Play shows the price in your local currency before you confirm. No subscription and no advertising.
The Solfeggio journey Each journey follows the same ascending sequence: 174, 285, 396, 417, 528, 639, 741, 852 and 963 Hz. Each frequency receives an equal share of the session.
Listen your way Timed sessions stop automatically. Playback continues in the background or with your screen locked. Adjust the tone volume separately and listen alongside Spotify or another audio app, depending on your device and the other app's audio behaviour. Only Hz is independent of Spotify and is not affiliated with it.
Explore the frequency guide and chakra themes for reflective listening. Frequency names and chakra themes represent spiritual associations, not promised health effects. Only Hz is not a medical device and does not diagnose, treat, cure or prevent medical conditions. Keep your listening volume comfortable.
Internet and audio Audio streams in lossless FLAC from validated 48 kHz, 24-bit masters. An internet connection is required; offline playback is not available. A free three-minute session uses about 7–8 MB of audio data. Longer sessions use more, so consider Wi-Fi if your mobile data is limited.
Already purchased? Select Restore purchases using the Google account used for the purchase. If you previously paid to download Only Hz and full access is missing, contact support before paying again. No Only Hz account is required.
Recent changes: A refreshed look with nature backgrounds, warm champagne accents and a matching frequency guide. Your familiar controls, free tones and full-access options remain in place.
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