StringWise: Violin Tuner
Tune & train your intonation
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Intonia is a beautiful, accurate violin tuner and a practice coach for your intonation, in one focused app.
TUNE INSTANTLY
- A live tuner shows the note you are playing, a -50 to +50 cent meter, and clear flat / in-tune / sharp feedback in real time.
- Your four strings (G, D, A, E) are one tap away, with the nearest one highlighted as you play.
- Set your reference pitch (Concert A) to match your ensemble.
TRAIN YOUR EAR
- Play along with a steady reference drone and tune your intonation by sound, the way string players really practice.
- A clean, adjustable metronome is built in.
PRACTICE WITH PURPOSE
- Short guided exercises walk you through scales and arpeggios, listen as you play, and score how in-tune you were, note by note.
- Insights track your accuracy, your sessions, and a daily practice streak, so you can watch yourself improve.
PRIVATE BY DESIGN
- No account, no ads, no tracking. Your practice data stays on your device, with optional private iCloud sync.
- The microphone is used only to detect pitch, live, on your device. Audio is never recorded or sent anywhere.
FREE AND PRO
The tuner, drone, metronome, practice streak, two guided exercises a day, and your history are free forever. Intonia Pro unlocks unlimited guided exercises, the full scale and arpeggio library, advanced insights, and home-screen widgets.
Intonia Pro subscription options:
- Weekly: $4.99 per week
- Annual: $59.99 per year, with a 7-day free trial
- Lifetime: $99.99 one-time purchase
Payment is charged to your Apple Account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours prior to the end of the current period. Manage or cancel anytime in your App Store account settings. Any unused portion of a free trial is forfeited when you purchase a subscription.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://intonia.vercel.app/privacy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New name, same app: Intonia is now StringWise. Plus tuning stability improvements and bug fixes.
The developer, Vikram Joshi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Vikram Joshi
- Size
- 1.3 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Intonia Pro Lifetime $99.99
- Intonia Pro Annual $59.99
- Intonia Pro Weekly $4.99
- Copyright
- © 2026 Vikram Joshi