Privacy policy

On your iPhone

Your activities, mixes, playlists you make in Lytra, favorites and settings are stored on your device. Lytra also saves a small backup of them to your own iCloud account, so deleting and reinstalling the app doesn’t lose them. That backup lives in your iCloud, and we can’t see it.

Apple Music

With your permission, Lytra uses Apple’s MusicKit to read your Apple Music library so it can show and play your music. It changes your library only when you ask it to — for example, when you add songs to a playlist. Your library stays between your iPhone and Apple; we don’t copy it to our servers.

Analytics and crash reports

To learn what’s working and fix problems, Lytra sends anonymous usage events and crash and freeze reports to PostHog, our analytics provider. These are tied to a random ID made on your phone — not to your name, email or Apple ID. They include things like:

• which steps of the intro you went through, and the answers you picked there;
• when an activity is created, edited, started or ended, with counts such as how many songs played;
• the app version, iOS version and device model;
• for crashes and freezes, technical details about where in the app the problem happened.

They never include the names of your songs, playlists or activities, what you search for, or your Apple Music IDs. Like any internet request, these reach PostHog with your device’s IP address, which may be used to estimate a general location such as your country.

You can turn this off any time in Lytra’s Settings with Share usage data.

Song tempo

To show a song’s tempo (BPM), Lytra sends that song’s catalog codes — its Apple Music song ID and its ISRC, the industry code for a recording — to our server on Google Firebase. We look the tempo up with Soundcharts, a music-data provider, and save it by song so the next lookup is instant. Nothing about you is sent with it.

If you correct a song’s tempo, the corrected number is shared anonymously so the tempo can be fixed for everyone.

Purchases

Apple handles all payments, so we never see your card or Apple ID. We use RevenueCat to check your subscription; it receives an anonymous ID and your purchase history from Apple so Lytra Pro unlocks on your devices.

When you email us

If you contact us, we receive your email address and whatever you write, plus the app version when you write from inside the app. We use it only to reply and to fix what you report.

Your choices

• Turn off analytics and crash reports in Lytra’s Settings with Share usage data.
• Turn Apple Music access on or off in iOS Settings › Lytra.
• Deleting Lytra removes its data from your iPhone.

Because nothing we collect is linked to you, we can’t look it up by person — but if you have a question or request, email us and we’ll help.

Children

Lytra isn’t directed at children under 13, and we don’t knowingly collect their information.

Changes

If this policy changes, we’ll update it here and change the date at the top.

Contact

Franklin Labs LLC · privacy@franklinlabs.app