# GRETA OTO vs ReferencePitchAnalyzer

The clearest difference is update cadence: ReferencePitchAnalyzer at weekly against GRETA OTO's every 4 weeks. GRETA OTO's advantage is iOS requirement (12.1 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GRETA OTO ships an update every 4 weeks, ReferencePitchAnalyzer weekly. The most recent releases landed on September 13, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | GRETA OTO | ReferencePitchAnalyzer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Weekly** |
| Size | 136 MB | 9 MB |
| Requires iOS | **12.1** | 26.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [绍纲 汪](https://appshunter.io/developer/1792148257) | [HIROSHI SHINKAWA](https://appshunter.io/developer/1875457585) |

## What reviewers say

### GRETA OTO

[App page](https://appshunter.io/ios/app/greta-oto/id6740990140)

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

**In-app purchases:** none


### ReferencePitchAnalyzer

[App page](https://appshunter.io/ios/app/referencepitchanalyzer/id6761398003)

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

**In-app purchases:** none


## Frequently asked questions

### Is GRETA OTO free?

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

### Is ReferencePitchAnalyzer free?

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

### Do GRETA OTO or ReferencePitchAnalyzer have ads?

Neither GRETA OTO nor ReferencePitchAnalyzer shows ads.

### Which is updated more often, GRETA OTO or ReferencePitchAnalyzer?

GRETA OTO ships an update every 4 weeks, and ReferencePitchAnalyzer weekly. Most recently, GRETA OTO was updated on September 13, 2026 and ReferencePitchAnalyzer on September 18, 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.*