InTune – Tuning Practice
by Half Note Labs
- Music
- Paid
- Zombie
- Small & simple · 85
- Rating
- 4.7
- 557 ratings
- Top 70%among 231 Music apps
- Last update
- Feb 15, 2021
- Version 5.0.3
- Size
- 90 MB
- Category
- Music
- Tracked since
- Oct 10, 2026
Estimated revenue
A model estimate with a likely range, not a reported figure.
No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.
How this estimate is made
Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.
Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.
Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.
Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.
Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.
Full methodScreenshots
As shown on the App Store listing.
About this app
Text from the App Store listing.
Improve your ear for tuning and intonation with this beautiful app.
- Improve your musical intonation — one of the most important skills a musician can have.
- Leverage 25 years of academic research on how to train intonation.
- Track your progress and compete on Game Center.
- Add on beautiful instrument sounds, including piano, guitar, violin, cello, clarinet, banjo, flute, French horn, trombone, and trumpet.
WHAT PEOPLE ARE SAYING
“A brilliantly simple game of precision hearing…ingenious. It will absolutely help you develop a more discerning ear.”
- Voice Council Magazine
“Very easy to use…a fun and useful addition to your practice toolbox.”
- Horn World
“There are a number of ear training apps available for the iPhone, but InTune has actual science to back it up.”
- discchord
“I have your app on my phone and love it!!!”
- David P. Schurger, orchestra director, Indiana
“Excellent...it’s made a remarkable difference this past year in my ability to rehearse complex 20th and 21st century music!”
- Paul Piazza, conductor/composer, LA
THE SCIENCE BEHIND THE APP
InTune began as a way for researchers to test pitch discrimination, the ability to differentiate pitches that are close together. But then researchers discovered that musicians improved the more often they played – 3x faster than those who didn’t. Download for free and see if InTune works for you!
HELP US IMPROVE!
We’re always improving InTune and love hearing from users. Please send your comments and requests to [email protected].
What’s new
Release notes for the latest version, as written by the developer.
- Beautiful new design
- New instruments: banjo, koto, guitar, timpani, trumpet, and piccolo
- Better instrument sounds, including real clarinet, banjo, koto, guitar, and cello
- French, Italian, Swedish, and Finnish translations
- Shake to hear pitches again
- Shinier app icon
Rank history
Daily position in the US charts. #1 is at the top.
- Best rank
- #25
- Current rank
- #37
- Days charting
- 7 of 7
On the charts today
Small & simple score
How realistic it is for a small team to build something like this.
85/100
Small & simple
- Developer size100% · 25
Developer: 1 app on the charts
- Audience size80% · 20
Ratings: 557
- App size60% · 10
Size: 90 MB
- Price model100% · 15
Price model: paid
- Demand proof75% · 30
Best rank #11, 20 countries
An indicator, not a fact. We can't see team size. Calculated Oct 25, 2026 · method i2
How the score worksGap check · UK
Is this US chart app missing in UK?
It showed up on a UK chart in the last 30 days, so it is not a gap.
Store check Oct 15, 2026
This is a candidate, not a verdict. Charts show at most 100 apps, so not charting does not mean no demand. Check the UK store before you decide.
See all gapsVersion history
- 5.0.3LatestReleased Feb 15, 2021