Comparison

Functional Harmony vs LoopTrainer

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

Head to head
About

Functional Harmony

This music theory app helps users spell chords and scales by entering a root note. It also identifies intervals when two notes are provided. Learn music theory concepts quickly and easily.

Highlights
  • Spell chords
  • Spell scales
  • Identify intervals
  • Enter root note for chords/scales
  • Enter two notes for interval identification
Features
Read full description

Functional Harmony is a fast music theory desk for players and students. Build chords and scales from a root and quality. Identify harmony from notes. Or just Ask—type a chord, scale, or note stack in plain English and jump straight to the answer. SCALE FINDER • Choose a root and scale quality—major, minor, modes, pentatonic, and more • See every degree spelled clearly for practice and ear training • Perfect when you need a quick scale finder without flipping textbooks CHORD BUILDER & CHORD ID • Spell major, minor, sevenths, suspended, augmented, diminished, and more • Stack notes in the Notes tab to identify chords and intervals (reverse lookup) • Piano-friendly note entry with accidentals—great as a chord identifier ASK • Natural-language queries: “C major 7”, “F# dorian”, “C E G” • Live preview before you open Chords, Scales, or Notes • Built for homework, rehearsals, and songwriting sessions WHY FUNCTIONAL HARMONY • Chords, scales, and note identification in one app • Clean, bottom-anchored controls designed for one-handed practice • No accounts, no clutter—just theory when you need it Whether you call it a scale finder, chord identifier, or harmony lab, Functional Harmony keeps tonal music theory at your fingertips.

About

LoopTrainer

Learn songs by ear with this music app. It allows you to loop specific sections of songs from the Apple Music catalog, adjust playback speed, and access guitar tabs. Progressively increase song speed to master challenging parts.

Highlights
  • Loop specific song sections
  • Adjust playback speed
  • Access guitar tabs
  • Progressive speed training
  • Save loop settings
  • Apple Music catalog integration
Features
Read full description

Imagine you want to learn a song by ear, wouldn't it be great if there was an app that gave you access to the Apple Music Catalog while giving you the option focus on the part you are learning, while giving you the option to change the speed? Well, Loop Trainer got you covered! It's super easy, just search for your favorite song, select the section you want to loop and play along! Want to play at a different speed? No problem, with Loop Trainer you can choose the speed you want. Need tab for the song? With one click you will be redirected to the most accurate tab we can find! This is great when you are just learning a song, or when you want to bring it to the next level and play even faster than in the original record! Not only that, you can play the song in progressive speed. You define your start speed, end speed, increment and repetition per speed, and Loop Trainer will gradually increase the song speed until your target speed is reached. This is great when you are learning you are trying to bring you favourite licks and riffs up to speed! You loop settings are saved, so each time you go back to play the song, everything is as you left it.

Screenshots

Functional Harmony4 screens
LoopTrainer4 screens

Verdict

The call

The clearest difference is rating: Functional Harmony at 4.9 against LoopTrainer's 3.7. Functional Harmony also leads on ratings volume (24 vs 3). LoopTrainer's advantage is update cadence (every 6 weeks vs every 6 months) and iOS requirement (16.0 vs 18.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Functional Harmony holds the better App Store score, 4.9 against 3.7. That said, the two scores are not equally well evidenced: Functional Harmony has 24 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Functional Harmony ships an update every 6 months, LoopTrainer every 6 weeks. The most recent releases landed on September 21, 2026 and September 18, 2026 respectively.

Scorecard4 real differences · 6 level
Functional Harmony versus LoopTrainer: the parameters behind the verdict, then further details
ParameterFunctional HarmonyLoopTrainer
PriceFreeFree
Rating4.9 (24 ratings) — better3.7 (3 ratings)
Positive reviews83.3% of reviews—
Number of ratings24 — better3
Update frequencyEvery 6 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.016.0 — better
Further details — not scored
Size24 MB1 MB
Age rating4+4+
DeveloperDylan ShadePanittha Suwannajang

Customer experience

Functional Harmony

All ratings24 ratings
Positive95.8%
Neutral4.2%
Negative0.0%
Written reviews6 reviews
Positive83.3%
Neutral16.7%
Negative0.0%

LoopTrainer

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

None

Functional Harmony

No in-app purchases

None

LoopTrainer

No in-app purchases

Questions

Is Functional Harmony free?
Functional Harmony is free to download, with no in-app purchases.
Is LoopTrainer free?
LoopTrainer is free to download, with no in-app purchases.
Which has better reviews, Functional Harmony or LoopTrainer?
Functional Harmony is rated higher. Functional Harmony averages 4.9 out of 5 from 24 ratings, while LoopTrainer averages 3.7 from 3 ratings.
Do Functional Harmony or LoopTrainer have ads?
Neither Functional Harmony nor LoopTrainer shows ads.
Which is updated more often, Functional Harmony or LoopTrainer?
Functional Harmony ships an update every 6 months, and LoopTrainer every 6 weeks. Most recently, Functional Harmony was updated on September 21, 2026 and LoopTrainer on September 18, 2026.

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