u/xmos77

FRQ generates binaural beats, isochronic tones and pink noise in real time, allowing you to create personalised listening sessions rather than using fixed, prerecorded tracks.

Features include adjustable beat frequency and base tone, independent pink-noise control, brainwave-band guidance, custom presets, a session timer with gradual fade-out, reactive visuals and a true-black AMOLED mode.

The complete app normally costs $2.49 in the US and contains no adverts, subscriptions or account requirement.

FRQ is free through Google Play until 13 August 2026 at 23:59 GMT. Install it while the sale is active and it remains available through your Google Play account after the normal price returns.

Stereo headphones are required for the binaural effect. Isochronic tones and pink noise can also be played through speakers.

Google Play:
https://play.google.com/store/apps/details?id=com.hzlab.frqapp

https://preview.redd.it/nt42yvluz6dh1.png?width=1080&format=png&auto=webp&s=adfd8e3e28d4667adfe8ddee9642421bfb5ae5d8

Hi everyone — I’m the independent developer behind FRQ, a focused sound app for Android.

I built FRQ because I wanted direct control over binaural beats and isochronic tones rather than relying only on pre-made tracks. You can adjust the beat frequency and base tone yourself, add an independent pink-noise layer, and shape the session around what you actually want to hear.

Main features:

• Binaural and isochronic playback modes
• Adjustable beat frequency from 0.1–200 Hz
• Adjustable base tone from 100–500 Hz
• Independent pink-noise “surf” layer
• Listening timer
• Reactive frequency visuals
• Customisable interface colours
• Brainwave-band guide and in-app help

Stereo headphones are required for the binaural effect. Isochronic tones and pink noise can also be used independently.

FRQ is a one-time paid Android app. It isn’t a medical app and doesn’t claim to diagnose, treat or cure anything; it’s intended for focused listening, relaxation, meditation and sound exploration.

GIVEAWAY:

I have 20 Google Play promo codes that unlock the complete app at no cost. If you’d like one, leave a comment and I’ll send it privately while codes remain. Please redeem it by 31 August 2026.

There’s no obligation to leave a store review. If you try FRQ, I’d especially appreciate honest feedback on:

• Whether the frequency controls feel intuitive
• Whether you prefer exact controls or would also use named pre-sets
• Whether the difference between binaural and isochronic modes is clear
• Any playback or interface issues on your particular device

Google Play:

https://play.google.com/store/apps/details?id=com.hzlab.frqapp

Pricing and the full privacy policy are available through the Play Store listing.

Thanks for taking a look.