Functional Harmony vs LoopTrainer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Spell chords
- Spell scales
- Identify intervals
- Enter root note for chords/scales
- Enter two notes for interval identification
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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.
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.
- Loop specific song sections
- Adjust playback speed
- Access guitar tabs
- Progressive speed training
- Save loop settings
- Apple Music catalog integration
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | Functional Harmony | LoopTrainer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (24 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 24 — better | 3 |
| Update frequency | Every 6 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 24 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Dylan Shade | Panittha Suwannajang |
Customer experience
Functional Harmony
LoopTrainer
In-app purchases
Functional Harmony
No in-app purchases
LoopTrainer
No in-app purchases
Questions
Is Functional Harmony free?
Is LoopTrainer free?
Which has better reviews, Functional Harmony or LoopTrainer?
Do Functional Harmony or LoopTrainer have ads?
Which is updated more often, Functional Harmony or LoopTrainer?
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