Privacy Policy
Last updated: 11 June 2026
Soloist is built so that the most sensitive thing about you — the sound of you practising — never leaves your device.
Audio
All listening, tuning, transcription, and grading run entirely on your iPhone. No audio recording, microphone data, or transcription is ever uploaded to our servers. Our backend has no audio endpoints at all.
What does reach our servers
- Coach messages — if you use Soloist Coach, the messages you type and a short numeric summary of your latest graded take (e.g. timing and pitch percentages) are sent to our servers to generate a reply, along with a random per-install identifier used for monthly usage limits. Coach conversations are not used to identify you and are not sold or shared.
- Purchase verification — if you subscribe to Soloist Pro, Apple's signed purchase receipt is verified by our server to activate your subscription. It contains transaction details, not your name or payment information.
What we don't do
- No account or email is required to use Soloist.
- No advertising, no trackers, no third-party analytics SDKs.
- We do not sell or share personal data with anyone.
Practice data
Your lesson progress, takes, and stats are stored on your device (and in your personal iCloud where you enable it). We cannot read them.
Data retention & deletion
Server-side data is limited to anonymous usage counters and purchase entitlement records, retained while your subscription is active. Email mitsi@uptrail.ai to request deletion of any server-side data.
Children
Soloist is not directed at children under 13 and collects no personal information from anyone.
Contact
mitsi@uptrail.ai