Tunessa Terms of Use

Effective date: 4 November 2026

These terms are an agreement between you and Atakli Store ("we", "us"), the developer of Tunessa, an instrument tuner, metronome and practice log for Android. They cover the app, Tunessa Pro and the website tunessa.web.app. By installing or using Tunessa you agree to these terms. If you do not agree, please do not use the app. Our Privacy Policy explains how we handle data.

1. What Tunessa is

Tunessa is a set of practice tools for musicians. Its chromatic tuner listens to your instrument through the microphone while the Tune screen is open and shows the note and how far it is from the target. It also has standard and alternate tunings for more than 30 instruments, makam, maqam and raga modes, reference tones and drones, a metronome with a tempo trainer and setlists, and an optional practice log with weekly goals and CSV export. There is no account. Your data is stored on your device, and sound from the microphone is never recorded, stored or transmitted.

Tunessa is a practice tool. It is not a certified measuring instrument, a recorder, a lesson or music-teaching service, a hearing test, or a medical or therapeutic product.

2. Who can use Tunessa

Tunessa is intended for people aged 13 and over. If you are under 18 (or under the age of majority where you live), please ask a parent or guardian before you buy anything. Purchases are made through Google Play, where parents can approve purchases with Family Link. A parent or guardian who allows a minor to buy Pro accepts these terms for that purchase.

3. Licence to use the app

We give you a personal, non-exclusive, non-transferable, revocable licence to install and use Tunessa on Android devices you own or control, for tuning, timing and logging your own practice and performances, in line with these terms and the Google Play Terms of Service. You may not:

copy, modify, reverse engineer or resell the app or its tuning library, except where the law allows it despite this restriction;
remove copyright or other notices, or use the Tunessa name or icon to suggest that we endorse you;
use the app to break the law or the rights of others.

Open-source components and fonts in the app are licensed under their own licences, listed in Settings → About → Licenses.

4. Your data and your responsibility

Everything you enter in Tunessa, such as practice sessions, piece names, notes, setlists and custom tunings, belongs to you. We claim no rights over it and never receive it. You are responsible for:

keeping your own copies. Android backup to your Google account helps (see the Privacy Policy), but it can be turned off and is controlled by Google. Uninstalling the app, clearing its storage, using "Delete all my data", or losing or resetting your phone can delete your data, and we cannot recover it. Export your practice log as a CSV file if you want an extra copy;
what you do with files and text you export or share.

5. Accuracy, sound and safety

Readings depend on the sound and the phone. The tuner's readings depend on your phone's microphone, background noise, the instrument and how it is played. Readings, the strobe view, temperaments and microtonal targets are for practice and tuning by ear; they are not a certified measurement. Makam, maqam and raga targets follow common conventions, and teachers and traditions can differ; the reference pitch and offsets can be adjusted.
Your instrument. Tune carefully, especially with high tunings or new strings: a string tuned far above its normal pitch can break. Follow the instrument maker's or your teacher's advice on string tension. We are not responsible for broken strings or damage to instruments.
Metronome timing is scheduled from the phone's audio clock. Bluetooth headphones and speakers add a delay that the app cannot fully remove; you can adjust it in Settings where available.
Volume. Reference tones, drones and the metronome can be loud, especially with headphones. Start at a low volume and protect your hearing.
Flashing. The optional beat flash can affect people with photosensitive epilepsy. It is off by default, and the app warns you before you turn on "Flash every beat".
No advice. Nothing in Tunessa is medical, therapeutic or professional advice. Tunessa makes no health claims about any tuning or frequency.

6. Free features

The full chromatic tuner with the needle view and every note, reference pitch from A4 = 415 Hz to 466 Hz, all note names, transposition, the standard tunings of every instrument that is not marked Pro (currently more than 30 instruments), reference tones, the strobe view as a preview (currently 3 minutes each time the tuner opens), the metronome (10 to 400 BPM, 1 to 16 beats, subdivisions, accent on beat 1, tap tempo, count-in, three click sounds and background playback), one setlist with up to 5 songs, and the practice log with unlimited sessions, a weekly goal and CSV export (up to 10 named pieces) are free, with no time limit and no counters. The tuner is never paywalled, and CSV export will always stay free. There are no ads.

Remote settings may make the free limits more generous, never stricter.

7. Tunessa Pro

Tunessa Pro unlocks extra features, such as the full strobe view, more than 150 alternate tunings, additional instruments and custom tunings, temperaments, Turkish makam, Arabic maqam and Sa/raga modes, sweetened per-string offsets, drone sounds, grouped and odd meters with per-beat accents, polyrhythms, the tempo trainer, silent bars, unlimited setlists, more click sounds, and practice charts with unlimited named pieces. The current list is shown in the app. Pro is sold through Google Play as:

Pro Lifetime: a one-time purchase, not a subscription (section 9);
Pro Yearly: an auto-renewing subscription billed once a year (section 8);
Pro Monthly: an auto-renewing subscription billed once a month (section 8).

There is currently no free trial. If we offer one in the future, the Pro screen and Google Play show its length, the date it ends, the price that applies afterwards and how to cancel before you confirm, and it converts to a paid subscription only as shown there. Some Pro features can be previewed before you buy, such as the strobe view and the target notes of every Pro tuning.

Prices are shown in the app and in the Google Play purchase window before you buy, in your local currency and including any taxes Google Play applies. The price shown at checkout is the price you pay. Prices can differ between countries, and we may test different prices or plan arrangements with different users. Any price offered to you is shown in full before you confirm.

Payment. Google Play charges the payment method in your Google account when you confirm the purchase. Payments, receipts and billing are handled by Google under the Google Play Terms of Service. We never see your payment details.

8. Subscriptions: renewal, offers, cancellation and refunds

Automatic renewal. Pro Yearly and Pro Monthly renew automatically at the end of each billing period (a year or a month) at the price then in effect, and Google Play charges you again, until you cancel. Google Play may process the renewal payment up to 48 hours before the new period starts. To make sure you are not charged for the next period, cancel at least 48 hours before the renewal date.

How to cancel. You can cancel at any time in Google Play: open the Play Store app, tap your profile picture, then Payments & subscriptions → Subscriptions → Tunessa → Cancel subscription. "Manage subscription" in Tunessa's Settings and "Manage subscriptions" on the Pro screen open the same page. You can also cancel at play.google.com/store/account/subscriptions. Uninstalling the app does not cancel a subscription.

After you cancel, Pro stays active until the end of the period you have already paid for, and then it ends. No further payments are taken.

Introductory and special offers. From time to time we may offer a discounted first year of Pro Yearly, for example a one-time offer in the app or an offer to former subscribers, and Google Play may show a retention offer when you cancel. Before you confirm, the app and Google Play show the offer price, its length and the regular price that applies afterwards. After the offer period, the subscription renews at the regular yearly price unless you cancel. Each offer can be used only where and while it is offered, and only by eligible Google accounts as Google Play decides.

Price changes. If the price of your subscription changes, Google Play will tell you in advance and, where Google Play or the law requires it, ask for your agreement. If you do not agree, you can cancel before the new price applies.

Payment problems. If a renewal payment fails, Google Play gives you a grace period (currently 14 days for Pro Yearly and 7 days for Pro Monthly) to fix the payment method, during which Pro keeps working. After that, the subscription may be put on hold for up to 30 days, and Pro pauses until the payment succeeds. Your data is not affected.

Switching to Lifetime. You can buy Pro Lifetime while a subscription is active. Buying Lifetime does not cancel the subscription automatically: cancel it in Google Play so that it stops renewing. The app reminds you of this.

Refunds. Purchases are handled by Google Play, so refunds follow the Google Play refund policy. You can request a refund through Google Play (play.google.com → your account → Order history, or the Google Play Help Center). Within 48 hours of a purchase, Google can often refund directly. After that, you can also write to us at ataklistore@gmail.com with your order number (it starts with "GPA."). We review every request fairly and can refund through Google Play where its rules allow. If you are a consumer, nothing in these terms limits the refund or withdrawal rights that the law of your country gives you. In the EU, the UK and Türkiye, Google Play's checkout tells you how the right of withdrawal applies to digital content and services that start immediately.

Restoring purchases. If you reinstall the app or move to a new phone, tap "Restore purchases" in Settings or "Restore" on the Pro screen while signed in to the same Google account.

9. Pro Lifetime: lifetime means lifetime

Pro Lifetime is a one-time payment. It is not a subscription, it never renews and it is never charged again. It unlocks Pro for the Google account that bought it, on every Android device where you use Tunessa with that account. Pro, including future tuning updates, stays unlocked for as long as Tunessa is available on Google Play.

Our commitment to Lifetime owners:

A lifetime purchase is never turned into a subscription, and we will never ask Lifetime owners for an extra payment to keep the features they bought.
We will never move a Lifetime feature behind a subscription or remove a Pro feature from Lifetime owners while it is available to subscribers. If a feature has to change, for example because Android or Google Play changes, Lifetime owners get the same replacement as subscribers.
Lifetime includes the Pro features and tuning updates we add in the future. If we ever offer something with ongoing costs of its own, such as an optional cloud service, it will be clearly separate and optional. Nothing that is part of Pro will move into it.
If we ever stop developing Tunessa, we will announce it in the app and on our website at least 90 days in advance. Before we stop, we will release a final version in which your data and your Pro features keep working on your device without our servers, as far as Android and Google Play technically allow.

"Lifetime" means for as long as Tunessa is available on Google Play and supported as described above, not the lifetime of a particular device. A Lifetime purchase can end only if Google refunds or reverses the payment (for example after a refund or a chargeback), or in the case of fraud.

10. If Pro ends

If your subscription ends, is on hold, or a purchase is refunded, the Pro features stop working, but your data is never locked, hidden or deleted:

custom tunings, setlists, practice history and chart data stay on your phone;
Pro tunings stay visible with their target notes; tuning against them needs Pro again. The chromatic tuner still tunes every note, so you are never left with an instrument you cannot tune;
setlists beyond the free limit become read-only, not deleted;
a metronome that is playing with Pro features keeps playing until you stop it; the next start uses the nearest free settings and says so;
CSV export of the practice log always stays free.

11. Third-party services

Tunessa relies on services from other companies, including Google Play, Firebase and RevenueCat, and on your phone's microphone, audio output, file picker, sharing and notification features. Your use of Google Play is governed by Google's terms. We are not responsible for outages or changes of those services, but we will try to keep the app working when they change. Tunessa is not affiliated with any instrument maker or music publisher. Names of tunings, makams, maqams and ragas are used only to describe musical intervals.

12. Updates and availability

We may update Tunessa to fix bugs, improve features, add tunings, or meet legal and Google Play requirements. Some updates may be needed for the app to keep working. Free features listed in section 6 will stay free. Subject to section 9, we may change or discontinue other features. If we remove a feature that subscribers have paid for during a billing period, we will offer a fair solution, such as a partial refund.

13. Warranty disclaimer

We work hard to make Tunessa accurate and reliable, but it is provided "as is" and "as available". To the extent the law allows, we do not guarantee that the app will be error-free or uninterrupted, that every pitch reading, temperament or microtonal target will be exact on every device, or that the metronome will be free of delay on every audio device. This does not affect your statutory rights as a consumer, including any legal guarantee of conformity for digital content.

14. Limitation of liability

To the extent the law allows, we are not liable for indirect or consequential losses, or for loss of data, broken strings or damage to instruments or audio equipment, hearing damage from listening at high volume, or decisions you make based on readings shown in the app, arising from your use of the app. Our total liability for any claim relating to Tunessa is limited to the amount you paid for Tunessa Pro in the 12 months before the claim. Nothing in these terms limits liability that cannot be limited by law, such as liability for intent, gross negligence, death or personal injury, or your rights under mandatory consumer protection law.

15. Ending these terms

You can stop using Tunessa at any time by uninstalling it. Cancel any subscription in Google Play first (section 8). We may end or suspend your licence if you seriously break these terms. This does not affect your right to a refund where the law gives you one.

16. Changes to these terms

We may update these terms when the app, our offers or the law change. The effective date at the top shows the current version. For important changes, we will tell you in the app before they take effect. Changes never reduce the commitments in section 9 for purchases you have already made. If you do not agree to a change, you can stop using the app and cancel your subscription.

17. Governing law and disputes

These terms are governed by the laws of the Republic of Türkiye, and the courts and enforcement offices of Istanbul have jurisdiction. If you are a consumer, you also keep the protection of the mandatory laws of your country of residence, and you can bring a claim in the courts of that country. Consumers in Türkiye can also apply to consumer arbitration committees and consumer courts. Consumers in the EU can use the online dispute resolution options available to them in their country. Please contact us first, because most problems can be solved quickly by email.

18. Contact

Atakli Store, developer of Tunessa
Email: ataklistore@gmail.com
Website: https://tunessa.web.app

Google Play and the Google Play logo are trademarks of Google LLC.