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Quick answers
The binaural beats sound like nothing. Is it working?
Use headphones. A binaural beat needs a different tone in each ear, so speakers mix it away. On a speaker, try the isochronic sessions instead. Binaural beats without headphones →
Can Shimmr play while I use other apps?
Yes. Open the mixer from the player and turn on Play Audio with Other Apps under Preferences. It also keeps playing with the screen off.
Does it work without internet?
Yes. Every sound is built into the app, so it works on flights and anywhere without signal.
How do I cancel a subscription?
Apple manages subscriptions. On your iPhone open Settings, tap your name, then Subscriptions, and choose Shimmr.
More answers
How long to listen, which frequency to pick, and what the research says: it’s all in Learn.