InTune vs HD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
InTune
Enhance your musical ear for tuning and intonation with this app. It utilizes academic research to help you track progress, compete, and master pitch discrimination. Offers a variety of instrument sounds to aid your practice.
- Improve musical intonation
- 25 years of academic research
- Track progress
- Compete on Game Center
- Add instrument sounds
- Pitch discrimination training
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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 support@halfnotelabs.com.
HD
This application connects to a specific device via Bluetooth to remotely control musical functions. It allows instructors to guide students with features like metronome operation, tempo setting, and pitch adjustment. It also includes tools for chord detection and tuning.
- Remote HD control (keyboard, metronome, temperament, transposition)
- Customizable beat and tempo settings
- Individual volume and pitch adjustment
- Demonstrate mode for pitch and volume feedback
- Chord detection and naming
- Adjustable tuner
- Rhythm assistant
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* The device on which this application is installed must be connected to the HD-300 via Bluetooth®. The application does not produce sound independently. The HD-300 Assistant application allows an instructor to remotely control the HD-300 and provide intuitive guidance to students. ≪ Functions ≫ • HD Control In addition to keyboard and metronome operation, the app allows remote control of temperament and transposition. • Beat, Tempo Setting Irregular meter and tempos can easily be created, saved, and played back. • Individual Volume and Pitch Fine adjustment is available for individual volumes and pitches. • Demonstrate Mode The interference beat that occurs when notes are slightly out of tune can be recreated, and the volumes of harmony notes can be adjusted to give students a feel for appropriate pitch and volume. • Chord Detector Chords can be detected and named based on a group of played notes. • Tuner The tuner provides a convenient means to check pitch. The tuner’s base pitch is adjustable. ・ Rhythm Assistant The app can play the same rhythm as musical score.
Screenshots
Verdict
The clearest difference is price: HD at Free against InTune's $0.99. HD also leads on in-app purchases (none vs 14) and rating (5.0 vs 4.7). InTune's advantage is ratings volume (558 vs 3) and update cadence (every 3 months vs every 10 months). On ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
HD is free to download; InTune costs $0.99 up front. InTune sells 13 one-off in-app purchases. HD asks for nothing beyond the download.
HD holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: InTune has 558 ratings behind it against 3, so its average is the more settled of the two.
InTune ships an update every 3 months, HD every 10 months. The most recent releases landed on November 1, 2026 and October 22, 2026 respectively.
| Parameter | InTune | HD |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.7 (558 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 81.9% of reviews | — |
| Number of ratings | 558 — better | 3 |
| Update frequency | Every 3 months — better | Every 10 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #45 — better | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 86 MB | 76 MB |
| Age rating | 4+ | 4+ |
| Developer | Half Note Labs | Yamaha Corporation |
Customer experience
InTune
HD
Bugs and requests
InTune
Reported bugs
5 issues- App freezes mid-round
- Oboe timbre is inconsistent
- Timpani sounds are poor quality
- Flute sound is low quality
- Compatibility issues with iPhone 13
Requested features
5 requests- Ability to replay the tones
- Option to start from any level
- Ability to choose different intervals
- Option to turn off 3-strike mode
- Ability to save personal best scores
HD
Not enough reviews yet to summarise bugs or requests.
In-app purchases
InTune
- InTune French Horn Add-on$0.99
- InTune Tuba Add-on$0.99
- InTune Viola Add-on$0.99
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- Timpani$0.99
- InTune Clarinet Add-on$0.99
- InTune Piano Add-on$0.99
- InTune Double Bass Add-on$0.99
- InTune Violin Add-on$0.99
- InTune Cello Add-on$0.99
- Guitar$0.99
- Trumpet$0.99
- Trombone$0.99
- Flute$0.99
HD
No in-app purchases









