# Functional Harmony vs Guitar Tuner

The clearest difference is in-app purchases: Functional Harmony at none against Guitar Tuner's 4. Functional Harmony also leads on ads (none vs shown) and review sentiment (83% vs 67%). Guitar Tuner's advantage is update cadence (weekly vs every 6 months) and iOS requirement (16.0 vs 18.0). On price, ratings volume and device support there is nothing between them.

Both are free to download. Guitar Tuner sells 4 in-app purchases, starting at $1.99 per 7 days. Functional Harmony asks for nothing beyond the download.

Functional Harmony holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 25 and 48 respectively. Written reviews point the same way: 83% of Functional Harmony's written reviews are positive against 67% of Guitar Tuner's.

Functional Harmony ships an update every 6 months, Guitar Tuner weekly. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Functional Harmony | Guitar Tuner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (25 ratings)](https://appshunter.io/ios/app/functional-harmony/id1564025162/reviews)** | [4.7 (48 ratings)](https://appshunter.io/ios/app/guitar-tuner-tuneguide/id6742442731/reviews) |
| Number of ratings | 25 | **48** |
| Positive reviews | **83.3% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 24 MB | 15 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dylan Shade](https://appshunter.io/developer/1564023750) | [Kartika Ardiani](https://appshunter.io/developer/1777769813) |

## What reviewers say

### Functional Harmony

[App page](https://appshunter.io/ios/app/functional-harmony/id1564025162)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Guitar Tuner

[App page](https://appshunter.io/ios/app/guitar-tuner-tuneguide/id6742442731)

This application offers precise and easy guitar tuning for all skill levels. It features automatic and manual modes, multiple tuning options, and works with just your device's microphone. Ideal for electric, acoustic, and classical guitars.

**Highlights:** Automatic & Manual Tuning, Multiple Tuning Modes, High Precision Tuning, Easy-to-Use Interface, Works with Phone Microphone, Custom Tuning Options

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Guitar Tuner Pro - 1W | $1.99 | per 7 days |
| Guitar Tuner Pro - 1M | $3.99 | per month |
| Guitar Tuner Pro - 1Y | $19.99 | per year |
| Guitar Tuner Pro | $39.99 | one-time |


## Frequently asked questions

### Is Functional Harmony free?

Functional Harmony is free to download, with no in-app purchases.

### Is Guitar Tuner free?

Guitar Tuner is free to download, with in-app purchases available.

### Which has better reviews, Functional Harmony or Guitar Tuner?

Functional Harmony is rated higher. Functional Harmony averages 4.9 out of 5 from 25 ratings, while Guitar Tuner averages 4.7 from 48 ratings.

### Do Functional Harmony or Guitar Tuner have ads?

Guitar Tuner shows ads; Functional Harmony does not.

### Which is updated more often, Functional Harmony or Guitar Tuner?

Functional Harmony ships an update every 6 months, and Guitar Tuner weekly. Most recently, Functional Harmony was updated on October 24, 2026 and Guitar Tuner on October 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*