Hearopy

Hearopy helps ease motion sickness with one simple thing: a precise low-frequency tone, played through headphones for 60–90 seconds, before or during travel. It is based on Nagoya University research into how low-frequency sound (~100Hz) helps the inner ear settle the conflicting motion signals behind the nausea and dizziness of car, train, and boat travel. FEATURES • A precise 100Hz tone generated live by the audio engine — not a compressed file that loses detail exactly where it matters • Headphone check before you start — phone speakers cannot reproduce the low end this relies on • On-screen safe-volume guidance with the system volume slider built in • Session history, so you can mark which sessions actually helped • Fully offline — no account, no server, nothing leaves your device PREMIUM (one-time purchase) • Every mode: 90Hz / 100Hz / 120Hz, 60–90 seconds • Unlimited sessions per day (free tier: 3 per day) • Your full session history This is a one-time purchase, NOT a subscription — nothing auto-renews. PLEASE NOTE Hearopy is not a medical device and is not a substitute for medical advice. Keep the volume at a safe level and never use it while driving. If you have an ear condition, talk to a doctor first.