This app helps you improve your musical ear by training you to identify flat or sharp intonation in musical intervals. It offers customizable difficulty levels, various interval types, and detailed progress tracking to guide your learning journey.
2.0
December 15, 2025
This version features a full re-design of the app's appearance, various bug fixes, addition of the "in-tune" option, and a subscription option for the premium features.
MoreUnlock all premium features on a monthly subscription.
$2.99
All Accuracy Options
Unlock 20, 10, and 5-cent accuracy options.
Flat or Sharp covers all musical intervals from a minor 2nd up to two octaves. You can practice these in both melodic and harmonic varieties, as well as ascending or descending.
The app allows you to progressively hone your ear by setting desired tuning accuracy from +/- 50 cents down to +/- 5 cents. You can also adjust note duration from 0.2 to 4 seconds to improve recognition speed.
Yes, you can adjust the musical register and timbre of tones to suit your personal preferences. This allows for a more tailored learning experience.
Flat or Sharp tracks your progress with percentage correct and longest streak of correct guesses. This data is viewable by time frame, allowing you to see your ear improvement over practice periods.
Yes, Flat or Sharp offers a 2-month free trial for its premium subscription plans. The monthly plan is $2.99 and the annual plan is $14.99.
Flat or Sharp is available on iPhone and iPad devices, making it accessible for users on the Apple ecosystem.
The latest version of Flat or Sharp is 2.0, and it was last updated on December 15, 2025. This indicates a recent update and ongoing development.
Flat or Sharp has an age rating of 4+, making it suitable for a wide range of users interested in music education.
