Comparison

ET vs Hark

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ET

Enhance your musical ear with interactive exercises designed for musicians of all levels. Practice active and passive hearing through a variety of drills, including interval recognition, chord identification, and melodic imitation using your instrument or voice. The app offers a unique dialogue feature with integrated voicing generation for accurate feedback.

Highlights
  • Active and passive hearing exercises
  • Microphone-based instrument/voice feedback
  • Integrated voicing generator for chords
  • Customizable educational guidance
  • Over 280 achievements and score publishing
  • Support for over 40 scales and 140 chord progressions
Features
Read full description

Yet another ear-training app? Well, this one is different! Playing jazz, pop and improvised music means being able to quickly recognize and replay what you hear. Although this app began as an ear-training tool for students of jazz and pop at the Zurich University of the Arts (ZHdK), it is also intended for musicians playing in other styles, and at all levels. It was developed by Swiss IT specialist and jazz trumpeter Daniel Schenker, professor at ZHdK, in collaboration with his son Elia. How it works The app offers a host of ear-training exercises, many of them quite enjoyable, all designed to enhance both active and passive hearing. Active hearing means reproducing what you have heard on an instrument or with your voice, while passive hearing refers to the ability to identify such things as the scales, triads and four-note-chords, tensions and slash chords, on which active hearing is based. One of the features that make our app so special is the fact that its microphone enables a sort of dialogue between the app and the musician – whether on voice, brass and reed instruments, guitar, piano or electric bass. Unlike other apps, this one uses an integrated voicing generator to ensure that the chords played (position, voicing) correspond to the actual performance situation. In addition, the app uses a detailed educational guidance system, which allows users to individually customize the exercises. You can obtain over 280 achievements. Compete with other users and publish your high scores and trophies!   Active exercises (microphone) - Five-tone range imitation, major and minor: suitable for younger students or amateurs - Diatonic imitation: reproduction of notes in a particular key, vocally or on an instrument - Atonal imitation: improvement of relative or referential hearing - Tone sequences (2 - 6 tones) - Intervals - Resolution game: technique for the improvement of downward interval singing or playing - Bass imitation exercises: double bass notes and root notes of various chords are to be reproduced vocally or on an instrument, a central skill that is often underdeveloped - Sing or replay chord tensions (e.g. #9, b13) - Scales sandbox: imitation practice in tonal spaces from over 40 different scales - Tonal memory game   Passive exercises (identification practice) - Intervals / Interval series - Triads/four-note-chords in root position and inversion; top note positions - Four-note-chords with one tension (17 types) and with two tensions (15 types) - All 12 major and minor triads above a root note (slash chords/hybrids) - Identification of scales, modes and over 140 jazz, pop and classical chord progressions Depending on the setting, the chords can also be played arpeggiated. The app supports Bluetooth MIDI (iPhones only).   For whom is the app intended? - Singers both amateur and professional who want to incorporate (noteless) ear training exercises into their practice programme. - Musicians in primary and secondary school, musicians and singers preparing for university entrance exams (practical theory), and conservatory students - Musicians and singers of all genres, especially jazz/pop/rock, who want to freshen up or expand their chord vocabulary - Brass players: control in mouthpiece exercises (buzzing)

About

Hark

This app trains musicians to identify notes within a musical key, focusing on their relationship to the tonic. It offers various training modes, including single notes, melodies, and chord progressions, with hands-free operation for convenient practice.

Highlights
  • Identify notes as scale degrees
  • Hands-free training mode
  • Multiple training modes (degrees, melodies, chords, progressions)
  • Visual staff with colored notes
  • Explore any note in any key
  • Multiple instrument sounds
Features
Read full description

Hark trains your ear the way musicians actually hear: every note as a degree of the key, not a distance from the note before it. A cadence — or a drone — puts the tonic in your ear. A note sounds. You answer on a ladder of degrees, with the home note at the bottom like the ground. Then the note walks home, step by step, back to the tonic, so you hear the pull instead of reading about it. That walk is the explanation. There is no lecture. FOUR KINDS OF TRAINING • Degrees — one note at a time, from two degrees up to all twelve • Melodies — short phrases, name every note in order • Chords in the key — I, IV, V and the rest, heard by function • Progressions — three and four chords in a row INSIDE • A ladder of seven colours: tonic gold, dominant blue, leading tone red • Notes on a staff, spelled the way the key spells them • The walk home after every answer • Hands-free: train with the screen off, on a walk or in the car. The key, the note, a pause for your answer, then the answer spoken aloud. • Explore: hold any degree in any key and listen. No score, no history. • Five instruments: piano, guitar, strings, choir, electric piano • Your map: accuracy by degree and by chord, and what your ear mixes up • Ten languages, and a ladder labelled with numbers, movable-do syllables or note names — Do–Si, Do–Ti, H and B where they belong FREE, FOR GOOD Five degree levels in C major — up to all seven degrees across two octaves — two melody levels, two chord levels, the first progression level, hands-free training, the staff, a week of statistics, and all of Explore: every degree in every key, there to listen to. No daily cap, no timers. HARK PRO — MONTHLY, YEARLY OR ONCE Training in all twelve keys, chromatic degrees, minor keys, three octaves, all seven chords with sevenths, progressions, melodies up to five notes, custom drills, and the full map of your ear with four weeks of history. Choose a monthly or yearly subscription, with a one-week free trial for eligible customers, or a one-time purchase for permanent Pro access. Only one free trial is available per subscription group. After the trial, the selected subscription renews at the price shown in the app. Subscriptions renew automatically unless cancelled at least 24 hours before the current period ends. Manage or cancel them in your Apple Account subscription settings. To avoid a charge after a free trial, cancel at least 24 hours before it ends. The free levels stay free either way. NO ACCOUNT, NO ADS No sign-up, no ads, no streaks and no nagging. Your individual answers and detailed training history stay on your device. The app sends a limited set of usage events with a random installation identifier, including session summaries and purchase or free-trial events, to help us understand how it works. The privacy policy lists what is sent. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://hark-ear.pages.dev/privacy

Screenshots

ET4 screens
Hark4 screens

Verdict

The call

The clearest difference is price: Hark at Free against ET's $5.99. Hark also leads on update cadence (every 2 days vs every 2 months). ET's advantage is in-app purchases (none vs 3) and iOS requirement (12.0 vs 17.0). On rating, ratings volume, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

Hark is free to download; ET costs $5.99 up front. Hark sells 3 in-app purchases, starting at $3.99 per month. ET asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for ET against 5.0 for Hark. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

UpkeepUpdate frequency

ET ships an update every 2 months, Hark every 2 days. The most recent releases landed on October 14, 2026 and October 25, 2026 respectively.

Scorecard5 real differences · 5 level
ET versus Hark: the parameters behind the verdict, then further details
ParameterETHark
Price$5.99Free — better
Rating5.0 (2 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings22
Update frequencyEvery 2 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size97 MB11 MB
Age rating4+4+
DeveloperDaniel SchenkerIlia Usatov

Customer experience

ET

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Hark

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ET

No in-app purchases

3 purchases

Hark

Subscriptions2
  • Hark Pro — Monthly7 Days trial$3.991 Month
  • Hark Pro — Yearly7 Days trial$11.991 Year
One-time1
  • Hark Pro$19.99

Questions

Is ET free?
ET costs $5.99, with no in-app purchases.
Is Hark free?
Hark is free to download, with in-app purchases available.
Which has better reviews, ET or Hark?
ET and Hark are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.
Do ET or Hark have ads?
Neither ET nor Hark shows ads.
Which is updated more often, ET or Hark?
ET ships an update every 2 months, and Hark every 2 days. Most recently, ET was updated on October 14, 2026 and Hark on October 25, 2026.

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