AREION QUANTUM

By Ear – Terms of Use

Last updated: 12 November 2026

These terms are an agreement between you and AREION QUANTUM, s.r.o., Chvalská 718/10, 198 00 Praha 14, Czech Republic, Company ID 19621809 (“we”), about the By Ear app. By using the app you accept them. If you do not accept them, do not use the app.

Licence

The app is licensed to you, not sold, under Apple’s Licensed Application End User License Agreement, together with these terms. You may use it on Apple devices you own or control, as the App Store usage rules allow. You may not copy, resell or reverse engineer the app, or use its recordings outside the app.

What is free

The first level of intervals, chords, scales and notes in a key, both instruments, your progress and 10 daily review questions a day are free. We may change what is free in a later version; anything you have paid for stays available for the period you paid for.

By Ear Pro subscription

By Ear Pro is an auto-renewing subscription that opens levels 2 to 5 of every skill and removes the daily review limit. The price and the length of each period are shown in the app before you buy.

Your data

What the app stores and sends is described in the Privacy Policy.

No warranty

The app is provided “as is”. We work to keep it correct and available, but we do not promise that it will be free of errors or that using it will produce a particular musical result. Nothing in these terms limits rights you have under the consumer law of your country that cannot be limited by agreement.

Liability

To the extent the law allows, our total liability for any claim about the app is limited to the amount you paid for it in the twelve months before the claim.

Apple

These terms are between you and us, not Apple. Apple is not responsible for the app or its content and has no obligation to provide maintenance or support for it. Apple and its subsidiaries are third-party beneficiaries of these terms and may enforce them against you.

Changes

We may update these terms. The date at the top changes when we do. If you keep using the app after a change, the new terms apply.

Governing law

These terms are governed by the law of the Czech Republic. If you are a consumer, you also keep the protection of the mandatory consumer law of the country where you live, and you may bring a claim in the courts of that country.

Contact

hello@areionquantum.com