# PROTUNE vs Harmonic Tuner

The clearest difference is in-app purchases: Harmonic Tuner at none against PROTUNE's 3. Harmonic Tuner also leads on update cadence (every 2 weeks vs every 4 weeks). PROTUNE's advantage is ratings volume (3 vs 1) and iOS requirement (15.1 vs 26.2). On price, rating, ads and device support there is nothing between them.

Both are free to download. PROTUNE sells 3 in-app purchases, starting at $9.99 per month. Harmonic Tuner asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for PROTUNE against 5.0 for Harmonic Tuner. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

PROTUNE ships an update every 4 weeks, Harmonic Tuner every 2 weeks. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | PROTUNE | Harmonic Tuner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/protune/id6758762425/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/harmonic-tuner/id6759459522/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 98 MB | 6 MB |
| Requires iOS | **15.1** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dark Castle Group, LLC](https://appshunter.io/developer/1895681019) | [Retro](https://appshunter.io/developer/1502159584) |

## What reviewers say

### PROTUNE

[App page](https://appshunter.io/ios/app/protune/id6758762425)

This professional-grade tuner offers real-time pitch detection with studio-quality accuracy for guitarists and bassists. It features numerous tuning presets, reference tones, and customizable visual skins and meter styles for a personalized experience.

**Highlights:** Real-time pitch detection, Customizable A4 reference pitch, 14+ tuning presets, Reference tones with clean/dirty modes, Three visual skins, Three meter styles

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PROTUNE Pro | $9.99 | per month |
| PROTUNE Pro | $59.99 | per year |
| PROTUNE Pro Lifetime | $99.99 | one-time |


### Harmonic Tuner

[App page](https://appshunter.io/ios/app/harmonic-tuner/id6759459522)

This app offers precision tuning for string instruments with a live readout and detailed harmonic analysis. It helps musicians check intonation, refine notes for recording, and study overtones and sustain with a focused workflow.

**Highlights:** Chromatic tuning with cents and frequency, Instrument presets, Live tuning display, Harmonic Analysis view, Harmonic strength bars, Waveform snapshots, Save and compare harmonic captures

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

**In-app purchases:** none


## Frequently asked questions

### Is PROTUNE free?

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

### Is Harmonic Tuner free?

Harmonic Tuner is free to download, with no in-app purchases.

### Which has better reviews, PROTUNE or Harmonic Tuner?

PROTUNE and Harmonic Tuner are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do PROTUNE or Harmonic Tuner have ads?

Neither PROTUNE nor Harmonic Tuner shows ads.

### Which is updated more often, PROTUNE or Harmonic Tuner?

PROTUNE ships an update every 4 weeks, and Harmonic Tuner every 2 weeks. Most recently, PROTUNE was updated on October 2, 2026 and Harmonic Tuner on October 10, 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.*