# String AI — AI feedback on how you play

> AI feedback on how you play (iPhone/iPad app by Joshua Vigel.)

- Source: https://appshunter.io/ios/app/string-ai/id6801934738 (this page in markdown: same URL + `.md`)
- Developer: [Joshua Vigel](https://appshunter.io/developer/6801934740)
- Category: Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 77 MB
- Languages: American English
- Released: 2026-10-14
- Data updated: 2026-10-21

## What is String AI?

Practice like a teacher is listening.

Your first three analyses are free — no account, no card, nothing to set up.

StringAI records your playing, measures what you actually did, and turns it into clear coaching — one thing to work on at a time. No vague encouragement, no guesswork: every note is measured, and every piece of advice points at something real in your recording.

WHAT IT MEASURES

• Intonation — how close each note lands to the pitch you meant, and how steady you hold it once you get there
• Tone — brightness, stability, and the scratch, whistle, and surface-noise faults that come from bow speed, weight, and contact point
• Bowing — bow angle and travel, straightness through the stroke, and how much of the bow you actually use
• Rhythm — timing against the beat, note by note
• Posture — bow hold and left-hand wrist angle, tracked with on-device vision

HOW A SESSION WORKS

1. Record. Point your phone at yourself and play — a scale, an exercise, or a piece you're working on. Or record audio only, with no camera at all.
2. Get measured. Pitch, tone, bow motion, and posture are analyzed right on your device in seconds.
3. See what happened. Not a grade out of ten — real counts. How many notes landed in tune, which ones keep drifting and how often, and what went well.
4. Practice it. Guided practice blocks turn the diagnosis into something you can actually do, then check whether it worked.

BUILT TO SHOW PROGRESS

Every session counts the same things, so your trends mean something over weeks and months. Watch your out-of-tune notes fall, see which notes keep catching you out, compare attempts at the same passage, pin the piece you're working on, and set a weekly goal you can actually keep.

YOUR RECORDINGS STAY ON YOUR DEVICE

Practice video and audio are analyzed on your phone. Raw recordings are never uploaded to our servers. What syncs is your results and progress — not the footage.

FOR WHO

Adult beginners, returning players, students between lessons, and anyone practicing without a teacher in the room. Violin first — the measurement work is built on the violin's range and technique.

A NOTE ON WHAT THIS IS NOT

StringAI is a practice tool, not a teacher and not a medical or diagnostic product. Its measurements and AI feedback can be wrong. Treat them as a second opinion on your own ears, not a verdict.

SUBSCRIPTION

After your three free analyses, StringAI Pro unlocks unlimited recording and analysis, personal AI coaching after every session, and your full practice history.

StringAI Pro is an auto-renewing subscription, available monthly ($9.99) or annually ($59.99). Payment is charged to your Apple ID at confirmation of purchase. It renews automatically unless canceled at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours before the period ends. Manage or cancel in your Apple ID settings after purchase.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://marvalarva2929.github.io/stringai-site/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| String AI Pro | $9.99 | per month |
| String AI Pro | $59.99 | per year |


## Is String AI safe?

Not enough ratings yet to assess String AI.

## Is String AI legit?

String AI has limited verification signals. The AppsHunter Legitimacy Score for String AI is 50 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-15

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-21.*