# Harmonic Tuner vs Retales Sampler

The clearest difference is in-app purchases: Harmonic Tuner at none against Retales Sampler's 1. Retales Sampler's advantage is iOS requirement (18.0 vs 26.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Retales Sampler sells 1 one-off in-app purchase. Harmonic Tuner asks for nothing beyond the download.

Harmonic Tuner ships an update every 2 weeks, Retales Sampler every 3 weeks. The most recent releases landed on October 31, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Harmonic Tuner | Retales Sampler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/harmonic-tuner/id6759459522/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free | — |
| Size | 6 MB | 423 MB |
| Requires iOS | 26.2 | **18.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Retro](https://appshunter.io/developer/1502159584) | [Luis Diaz-Faes](https://appshunter.io/developer/1491360302) |

## What reviewers say

### 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


### Retales Sampler

[App page](https://appshunter.io/ios/app/retales-sampler/id6819832284)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Retales | $39.00 | one-time |


## Frequently asked questions

### Is Harmonic Tuner free?

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

### Is Retales Sampler free?

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

### Do Harmonic Tuner or Retales Sampler have ads?

Neither Harmonic Tuner nor Retales Sampler shows ads.

### Which is updated more often, Harmonic Tuner or Retales Sampler?

Harmonic Tuner ships an update every 2 weeks, and Retales Sampler every 3 weeks. Most recently, Harmonic Tuner was updated on October 31, 2026 and Retales Sampler on November 8, 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.*