# Koto Tuner vs Uraha

The clearest difference is in-app purchases: Uraha at none against Koto Tuner's 1. Uraha also leads on update cadence (weekly vs every 5 weeks). Koto Tuner's advantage is iOS requirement (10.0 vs 26.1). On price, ads and device support there is nothing between them.

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

Koto Tuner ships an update every 5 weeks, Uraha weekly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Koto Tuner | Uraha |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/koto-tuner/id1295474780/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 28 MB |
| Requires iOS | **10.0** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Hsing-Fu Hsueh](https://appshunter.io/developer/1103119781) | [株式会社OHANA](https://appshunter.io/developer/1510172084) |

## What reviewers say

### Koto Tuner

[App page](https://appshunter.io/ios/app/koto-tuner/id1295474780)

Easily tune your 13-string koto with a simple interface and noise filtering. Visual indicators show pitch accuracy for each string, guiding you to precise tuning. Supports multiple tuning modes and adjustable A4 frequency.

**Highlights:** Noise filtering for accurate tuning, Visual pitch indicators, Calibrate piano sound, A4 frequency adjustment, 18 tuning modes, Precision tuning scale

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Function&No Ad | $1.99 | one-time |


### Uraha

[App page](https://appshunter.io/ios/app/uraha/id6755897635)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Koto Tuner free?

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

### Is Uraha free?

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

### Do Koto Tuner or Uraha have ads?

Neither Koto Tuner nor Uraha shows ads.

### Which is updated more often, Koto Tuner or Uraha?

Koto Tuner ships an update every 5 weeks, and Uraha weekly. Most recently, Koto Tuner was updated on November 3, 2026 and Uraha on October 30, 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.*