Comparison

Sonofield Ear Trainer vs Interval

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

Head to head
About

Sonofield Ear Trainer

This app helps musicians develop their ear by focusing on the feeling of individual notes within a key, rather than traditional interval training. It uses sustained drones and offers various modes like identifying scale degrees, melodies, and singing exercises. The app adapts to your skill level with an intuitive interface and progression path.

Highlights
  • Feeling-based note recognition
  • Scale degree identification
  • Melody recognition training
  • Singing exercises
  • Hands-free training mode
  • Interactive exploration instrument
Features
Read full description

Sonofield Ear Trainer (SET) is a revolutionary ear training app designed to help you intuitively play the melodies you hear and imagine. Instead of relying on traditional old methods like intervals, SET focuses on helping you feel the unique character of each note within a key. By using sustained drones to create a tonal foundation, you’ll learn to recognize scale degrees based on their *feeling*, not just how they sound. The app offers a variety of ways to train: * Degrees Mode - Identify individual notes against the drone by feeling. The heart of SET. * Melody Mode - Identify short melodic phrases, preparing you for real music. * Voice Mode - Sing the requested scale degree into your microphone. * Pocket Mode - Hands-free training for when you're on the go. * Free Play - An interactive instrument for exploration. With its intuitive, color-coded interface, thoughtfully designed progression path, and multiple difficulty levels, SET adapts to your skill level while keeping practice engaging. Whether you're a beginner or an experienced musician, SET is your guide to unlocking true musical fluency through intuitive, feeling-based ear training. No ads or forced payments. The free version contains full foundations for feeling-based ear training. Download the ear training app now!

About

Interval

This app provides a comprehensive suite of tools for guitarists, including a tuner, metronome, drone, and theory resources. It automatically logs practice sessions, tracks progress, and offers insights into your development.

Highlights
  • Integrated tuner with alternate tunings
  • Metronome with customizable click sounds and volume
  • Drone in twelve keys
  • Note and voice memo recording
  • Scale, chord, and theory resources
  • Automatic practice session logging
  • Progress tracking and streak counting
Features
Read full description

Interval is a daily practice journal for whatever you play. Start a session and the timer runs. A metronome, a drone, notes and voice memos are one tap away without leaving it — so you never stop practicing to go and find a tool. Guitar, bass and ukulele also get a tuner and scale diagrams drawn along the neck. WHAT YOU GET • A practice timer that keeps running while you use everything else • A metronome with four click sounds and its own volume • A drone in any of twelve keys • Notes and voice memos, to catch an idea while you are playing • A tuner, on the instruments that have strings to tune • Scales, chords and short theory written for people teaching themselves • A calendar that fills in as you play, and a streak that does not shame you PICK WHAT YOU PLAY Guitar, bass, piano or keyboard, ukulele, or anything else. The tools follow your choice. Nothing pretends to be something it is not: there is no keyboard diagram, and no sheet music. LEARNING WITH A TEACHER? If your teacher uses Interval, they give you a six-digit code. That is the whole setup — no email, no password. Your teacher can set the week's practice: a few tasks, a time on each, and a line about what to listen for. Tap start and you are in the usual session screen, with each task keeping its own time against its own target. It saves to your journal by itself, and your teacher sees the time you put in without you having to tell them. YOUR PRACTICE STAYS YOURS No account to make, no analytics, no tracking, no ads. Unless you connect to a teacher, there is no Interval server for your practice to go to at all. What you write stays on your phone unless you choose to share a page with your teacher, and your recordings never leave it at all. You can disconnect, or delete your account and everything sent from it, from Settings at any time. A copy of your journal is kept in your own iCloud so a lost phone does not cost you your history. You can switch that off in one tap. Recordings are never included.

Screenshots

Sonofield Ear Trainer4 screens
Interval4 screens

Verdict

The call

The clearest difference is in-app purchases: Interval at none against Sonofield Ear Trainer's 5. Interval also leads on review sentiment (100% vs 89%). Sonofield Ear Trainer's advantage is ratings volume (376 vs 1) and update cadence (every 9 days vs every 4 weeks). On price, rating, 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

Both are free to download. Sonofield Ear Trainer sells 4 one-off in-app purchases. Interval asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Sonofield Ear Trainer against 5.0 for Interval. That said, the two scores are not equally well evidenced: Sonofield Ear Trainer has 376 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 89% of Sonofield Ear Trainer's written reviews are positive against 100% of Interval's.

UpkeepUpdate frequency

Sonofield Ear Trainer ships an update every 9 days, Interval every 4 weeks. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.

Scorecard6 real differences · 4 level
Sonofield Ear Trainer versus Interval: the parameters behind the verdict, then further details
ParameterSonofield Ear TrainerInterval
PriceFreeFree
Rating4.9 (376 ratings)5.0 (1 ratings) — better
Positive reviews88.7% of reviews100.0% of reviews — better
Number of ratings376 — better1
Update frequencyEvery 9 days — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size105 MB25 MB
Age rating4+17+
DeveloperSonofield Ear Trainer Education Ltd.Bijan Pousti

Customer experience

Sonofield Ear Trainer

All ratings376 ratings
Positive97.3%
Neutral1.6%
Negative1.1%
Written reviews151 reviews
Positive88.7%
Neutral6.6%
Negative4.6%

Interval

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Sonofield Ear Trainer

Reported bugs

1 issue
  • None reported

Requested features

5 requests
  • Option to switch between 12TET and just intonation
  • Ability to reduce octave range
  • Incorporate more timbre options for drone and notes
  • Tracking and visualization of progress and learned skills
  • Add interactive tutorial for level 1

Interval

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Sonofield Ear Trainer

One-time4
  • Lifetime Pro$14.99
  • Lifetime Pro$17.99
  • Lifetime Pro2 variants$19.99
Show 1 more
  • Lifetime Pro$24.99
None

Interval

No in-app purchases

Questions

Is Sonofield Ear Trainer free?
Sonofield Ear Trainer is free to download, with in-app purchases available.
Is Interval free?
Interval is free to download, with no in-app purchases.
Which has better reviews, Sonofield Ear Trainer or Interval?
Interval is rated higher. Sonofield Ear Trainer averages 4.9 out of 5 from 376 ratings, while Interval averages 5.0 from 1 ratings.
Do Sonofield Ear Trainer or Interval have ads?
Neither Sonofield Ear Trainer nor Interval shows ads.
Which is updated more often, Sonofield Ear Trainer or Interval?
Sonofield Ear Trainer ships an update every 9 days, and Interval every 4 weeks. Most recently, Sonofield Ear Trainer was updated on October 14, 2026 and Interval on October 1, 2026.

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