Privacy Policy
Ear Training: Music Theory Lab (“the app”) is published by AppGrowth ATX LLC (“we,” “us,” “our”), a limited liability company organized in Texas, United States. The app teaches ear training and music theory: intervals, chords, perfect pitch, rhythm and sight reading. This policy explains what information the app handles, what it does not, and the choices you have.
The app works almost entirely on your own device. There are no accounts, no ads and no tracking, and we do not sell or share your personal information.
The short version
- Your progress stays on your device. Lessons completed, XP, streaks, scores and settings are stored only on your iPhone.
- The microphone is only used on your device. When you use the vocal range finder, the app listens to detect the pitch of your voice. Audio is never recorded, saved or sent anywhere.
- No accounts and no logins. We never ask for your name, email address or password.
- No advertising and no tracking. No ad networks, no advertising identifier (IDFA), and no App Tracking Transparency prompt, because we do not track you.
- Subscriptions are handled by Apple and Superwall, as described below.
What the app handles, and where it goes
Your progress and settings
Everything you do in the app (lessons, practice results, XP, streaks, badges, game scores, your onboarding answers and settings) is stored on your device. We do not run a server that holds this information and cannot see it. If you delete the app, it is deleted with it.
Microphone
The app asks for microphone access only when you open the vocal range finder, the feature that listens to your voice. The sound is analyzed on your device to measure its pitch. It is not recorded, not stored and not transmitted. Only the result, your lowest and highest notes, is saved on your device. You can turn microphone access off at any time in Settings → Privacy & Security → Microphone.
Notifications
If you allow notifications, the app schedules reminders on your device, such as a reminder the day before a free trial ends or a daily practice nudge. These are created on your device; no notification service of ours receives your information.
Subscriptions and paywalls
Purchases are processed by Apple through the App Store. We never see or receive your payment card, billing address or Apple Account credentials.
We use Superwall, a subscription and paywall service, to show subscription offers and to know whether your subscription is active. To do this, the Superwall software in the app sends Superwall a randomly generated user identifier, Apple’s vendor identifier for the device, your App Store purchase and subscription status, events such as when an offer is shown, purchased or closed, and basic technical details such as device model, operating system and app version, language, region, time zone and IP address.
The app also sends Superwall a few of your onboarding answers (for example your goals, instrument, experience level, how much time you want to practice, your note naming preference and how you heard about the app) so that the subscription offer can be personalized, for example by showing a plan built around your goal. These answers are not linked to your name or contact details, which we never collect.
This information is used only to operate subscriptions and to understand which offers work. It is not used for advertising. Superwall acts as our service provider. Its privacy policy is available at superwall.com/privacy.
You can view, manage or cancel a subscription at any time in Settings → your name → Subscriptions.
Crash and performance information
If you have chosen to share analytics with app developers in your iOS settings, Apple may provide us with crash reports and performance statistics. Apple aggregates this information and does not identify you to us. You can turn this off in Settings → Privacy & Security → Analytics & Improvements.
What we do not do
The app does not:
- Collect your name, email address, phone number or postal address
- Require or offer an account, login or password
- Record, store or upload audio from your microphone
- Track you across other apps or websites, or use the advertising identifier (IDFA)
- Show advertisements
- Include analytics or attribution software such as Google Analytics, Firebase, Mixpanel or AppsFlyer
- Sell, rent or share your personal information with third parties for their own purposes
- Access your contacts, location, photos, health data or files
Children’s privacy
Ear training is for musicians of all ages, and some people using the app may be children. We do not knowingly collect personal information from children. The app has no accounts, no chat, no content shared with other users, no advertising and no behavioral tracking. Microphone audio is analyzed on the device and never transmitted.
Subscriptions are purchased through Apple, and Apple’s parental controls apply. Parents can turn on Ask to Buy or restrict in-app purchases in Settings → Screen Time → Content & Privacy Restrictions.
If you are a parent or guardian and believe a child has provided personal information to us, contact us at contact@appgrowthatx.com and we will delete it.
Your rights
Depending on where you live, you may have rights to access, correct, delete or export your personal information, or to object to its processing. Almost all of your information lives only on your device and is under your control: you can remove all of it by deleting the app.
For the limited subscription information Superwall holds on our behalf, or any other request about your information, contact us at contact@appgrowthatx.com. We will respond within the time required by applicable law. We do not sell personal information and do not share it for cross-context behavioral advertising, so there is nothing to opt out of in that respect.
Where required, our legal basis for processing subscription information is the performance of our contract with you (providing the subscription you bought) and our legitimate interest in operating and securing the app.
Data retention
Progress and settings stay on your device until you delete them or the app. Subscription records are kept by Superwall and Apple for as long as needed to operate your subscription and meet legal, tax and accounting obligations. We do not keep our own database of users.
International transfers
Superwall and Apple may process information in countries other than your own, including the United States. Where required, these transfers rely on appropriate safeguards such as the European Commission’s Standard Contractual Clauses.
Security
Information on your device is protected by iOS and your device passcode or biometric lock. Network requests use encrypted HTTPS connections. Because we do not run a server holding your progress or personal information, there is no central database of user data to breach.
Changes to this policy
If we change this policy, we will update the “Last updated” date above and post the new version at this address. If we ever start collecting information in a materially different way, we will give clear notice in the app before the change takes effect.
Contact
AppGrowth ATX LLC is the data controller for the limited information described in this policy. Questions or requests: contact@appgrowthatx.com. We aim to respond to all privacy requests within 30 days.