Comparison

Sonofield Ear Trainer vs Polymeter

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

Polymeter

This metronome helps musicians practice complex time signatures and changing meters without constant resets. Create custom sequences, save them as songs, and share with bandmates.

Highlights
  • Combine multiple time signatures
  • Reorder bars with drag & drop
  • Create custom meters
  • Save and recall song sequences
  • Share songs with other musicians
Features
Read full description

Polymeter is a metronome designed for musicians who work with changing time signatures, odd meters, and complex arrangements so you never have to reset your click again. Key Features • Seamlessly combine multiple time signatures (4/4, 3/4, 6/8, 5/4, 7/8, 9/8) into a single continuous sequence. • Reorder instantly: drag & drop bars into the exact order you need • Custom meters: set custom beats + note values,, • Save & recall: save your sequence, title, and tempo as a song and reload anytime • Share a song to fellow musicians or band mates and they’ll be able to open it right in the app. Happy practicing!

Screenshots

Sonofield Ear Trainer4 screens
Polymeter2 screens

Verdict

The call

The clearest difference is review sentiment: Sonofield Ear Trainer at 89% against Polymeter's 0%. Sonofield Ear Trainer also leads on rating (4.9 vs 4.3) and update cadence (every 9 days vs every 3 months). Polymeter's advantage is monetization model (free vs free with in-app purchases). On price, ads, in-app purchases 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 and Polymeter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sonofield Ear Trainer holds the better App Store score, 4.9 against 4.3. That said, the two scores are not equally well evidenced: Sonofield Ear Trainer has 376 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 89% of Sonofield Ear Trainer's written reviews are positive against 0% of Polymeter's.

UpkeepUpdate frequency

Sonofield Ear Trainer ships an update every 9 days, Polymeter every 3 months. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

Scorecard6 real differences · 4 level
Sonofield Ear Trainer versus Polymeter: the parameters behind the verdict, then further details
ParameterSonofield Ear TrainerPolymeter
PriceFreeFree
Rating4.9 (376 ratings) — better4.3 (3 ratings)
Positive reviews88.7% of reviews — better0.0% of reviews
Number of ratings376 — better3
Update frequencyEvery 9 days — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better18.0
Further details — not scored
Size105 MB5 MB
Age rating4+4+
DeveloperSonofield Ear Trainer Education Ltd.Jack Gruber

Customer experience

Sonofield Ear Trainer

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

Polymeter

Written reviews1 reviews
Positive0.0%
Neutral100.0%
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

Polymeter

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
1 purchases

Polymeter

One-time1
  • Polymeter Pro$4.99

Questions

Is Sonofield Ear Trainer free?
Sonofield Ear Trainer is free to download, with in-app purchases available.
Is Polymeter free?
Polymeter is free to download, with in-app purchases available.
Which has better reviews, Sonofield Ear Trainer or Polymeter?
Sonofield Ear Trainer is rated higher. Sonofield Ear Trainer averages 4.9 out of 5 from 376 ratings, while Polymeter averages 4.3 from 3 ratings.
Do Sonofield Ear Trainer or Polymeter have ads?
Neither Sonofield Ear Trainer nor Polymeter shows ads.
Which is updated more often, Sonofield Ear Trainer or Polymeter?
Sonofield Ear Trainer ships an update every 9 days, and Polymeter every 3 months. Most recently, Sonofield Ear Trainer was updated on September 24, 2026 and Polymeter on September 25, 2026.

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