Help from Gårdisto AB · Updated 8 September 2026

Support

Email support@gardisto.eu. Include the app version, your phone model and what happened. Never send passwords, card details or verification codes.

Current public version

The current public Android version is a paid download. It includes all 20 frequencies, the available timers, continuous playback and Solfeggio journeys without an additional in-app purchase. The price Google Play shows before downloading is the amount charged. There are no ads or subscriptions.

Free sessions in the internal test version

An internal Android test version offers 432 Hz and 528 Hz in repeatable three-minute sessions. An optional one-time Google Play purchase unlocks the other frequencies, longer and continuous sessions, and Solfeggio journeys. This test version has not replaced the public paid app. If your version offers an unlock, check the localized price shown by Google Play before confirming.

If you previously paid to download Only Hz, you should not buy another unlock. If a test version shows locked content, contact us so we can help preserve your existing access.

Restore an in-app purchase

In a version with the optional unlock, use Restore purchases with the same Google Play account that obtained it and an internet connection. A pending payment does not unlock content until Google confirms it. If restoration fails, check the account selected in Google Play and contact us with the order reference if available. Google handles payment and applicable refunds; this does not remove your statutory rights.

Playback and timers

Check your phone volume, the app volume control and your internet connection. If audio does not start, tap Stop, choose a frequency and tap Play. Protected audio requires a valid installation and access check. Do not uninstall solely to troubleshoot before noting which Google Play account you used.

The selected timer stops playback when time runs out. A free test session lasts three minutes; you can start another whenever you like. With full access, Solfeggio journeys run for 15, 30 or 60 minutes and divide the total time equally between nine ascending frequencies. The journey timeline lets you seek within the selected duration.

On Android, playback is designed to continue with the screen locked and alongside Spotify or another music app. Device battery restrictions, audio routing and the other app can affect this. Use the Only Hz volume control to balance the tone with your music.

Audio quality and mobile data

Only Hz streams lossless FLAC made from validated 48 kHz / 24-bit masters. A complete three-minute free tone is approximately 7–8 MB. Longer sessions use more data; use Wi-Fi if your mobile allowance is limited. Seeking or replaying may download audio again.

Listening safely

Begin at a low, comfortable volume. The themes and chakra labels are spiritual and reflective associations, not guaranteed effects. Only Hz is not a medical device and does not diagnose, treat, cure or prevent a medical condition. For medical advice, consult a qualified healthcare professional.