Comparison

Frets vs Microtonal Interval Eartrainer

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

Head to head
About

Frets

This app offers a precise chromatic tuner and an ear-training coach designed for musicians. It features real-time pitch detection, interval recognition, and sing-back exercises, all while keeping your data private on your device.

Highlights
  • Real-time chromatic tuner
  • Interval recognition training
  • Sing-back pitch scoring
  • Chord quality identification
  • Spaced repetition learning
  • Progress tracking heatmap
  • No login or ads
Features
Read full description

Frets is a precise chromatic tuner and an ear-training coach in one calm, focused app. THE TUNER Real-time pitch detection with cents precision. Configurable A4 reference (440 Hz, 432 Hz, custom). Works for any instrument — guitar, violin, piano, voice, brass, woodwinds. EAR TRAINING Most ear-training apps are multiple-choice. Frets listens to you. Sing the note, play the note, and Frets grades you in cents. - Interval recognition — m2, M2, m3, M3, P4, P5 free; full set with Pro - Sing-back — Frets plays a note, you sing it, Frets scores your pitch - Chord quality — major, minor, diminished, augmented, dominant 7th and more - Spaced repetition that prioritizes your weakest intervals PROGRESS A 12-week heatmap of your training, a streak counter (with rest days — no guilt), and a clear view of which intervals you keep missing. NO LOGIN. NO ADS. NO TRACKING. Everything stays on your device. FREE & FULLY FEATURED Frets is free with a complete tuner and the core training modes. Frets Pro ($3.99, one-time) adds extended intervals, microtonal tuning (19-TET, 31-TET, just intonation), perfect-pitch drills, and a yearly stats view. No subscription. Ever. Built by an indie developer for musicians who want to actually hear better.

About

Microtonal Interval Eartrainer

Train your ear and voice to recognize and reproduce complex harmonies and intervals. Explore different tuning systems and practice with interactive exercises. Features include chord and scale recognition, with optional Game Center integration.

Highlights
  • Interval identification
  • Voice training with hum mode
  • Chord and scale recognition
  • Support for various tuning systems (JI, EDO)
  • Spectrum exploration mode
  • Progress tracking and accomplishment cards
Read full description

Enjoying new exotic songs, but have no idea what their unfamiliar harmonies are doing? With a little training, you can recognize and reproduce crazy harmonies yourself! TRAIN YOUR EAR, TRAIN YOUR VOICE Interval Ear Trainer turns ratios from JI (just intonation) and EDO (equal divisions of the octave) into focused, colorful practice sessions. Choose prime limits from 5-limit (traditional Western harmony) through 7-limit, 11-limit, 13-limit, and higher. Then, identify the intervals you hear. Targeted practice brings back troublesome intervals with nearby contrasts and familiar landmarks. Once you've trained your ear, train your voice with Hum mode, and let the app detect how close you are to singing intervals. Or, get started on recognizing chords, scales, and even scale progressions! EXPLORE THE SPECTRUM Turn off the pressure and enter a free spectrum mode, where you can practice your chosen intonation at will. A live display shows where your voice lands and highlights nearby intervals. Turn real practice history into polished accomplishment cards and challenge your friends to see how they do. No user account, ads, or in-app purchases. Microphone audio is never recorded or uploaded. Game Center integration is optional. EARN DISCOUNTS Unlock achievements to earn discounts on the upcoming Temper Microtonal Keyboard app, a full-featured microtonal learning and music production app. Temper Interval Trainer is made for instrumentalists, singers, composers, and anyone curious. Recognize and reproduce anything you hear, from short melodies to entire songs!

Screenshots

Frets4 screens
Microtonal Interval Eartrainer4 screens

Verdict

The call

The clearest difference is in-app purchases: Microtonal Interval Eartrainer at none against Frets's 1. Microtonal Interval Eartrainer also leads on device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price, rating, ratings volume and ads 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. Frets sells 1 one-off in-app purchase. Microtonal Interval Eartrainer 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 Frets against 5.0 for Microtonal Interval Eartrainer. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Scorecard4 real differences · 4 level
Frets versus Microtonal Interval Eartrainer: the parameters behind the verdict, then further details
ParameterFretsMicrotonal Interval Eartrainer
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS26.015.0 — better
Further details — not scored
Size2 MB7 MB
Age rating4+4+
DeveloperEnes OzPeter Keay

In-app purchases

1 purchases

Frets

One-time1
  • Frets Pro$3.99
None

Microtonal Interval Eartrainer

No in-app purchases

Questions

Is Frets free?
Frets is free to download, with in-app purchases available.
Is Microtonal Interval Eartrainer free?
Microtonal Interval Eartrainer is free to download, with no in-app purchases.
Which has better reviews, Frets or Microtonal Interval Eartrainer?
Frets and Microtonal Interval Eartrainer are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Frets or Microtonal Interval Eartrainer have ads?
Neither Frets nor Microtonal Interval Eartrainer shows ads.

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