# ARN vs CentiGrade Visual Tuner

The clearest difference is price: ARN at Free against CentiGrade Visual Tuner's $0.99. CentiGrade Visual Tuner's advantage is update cadence (every 4 days vs every 2 weeks) and iOS requirement (13.0 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

ARN is free to download; CentiGrade Visual Tuner costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ARN ships an update every 2 weeks, CentiGrade Visual Tuner every 4 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | ARN | CentiGrade Visual Tuner |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/centigrade-visual-tuner/id6758646319/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | — | Paid |
| Size | 2 MB | 18 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nicolas Augsburger Rossi](https://appshunter.io/developer/1803162820) | [PHILIP BRADLEY KING](https://appshunter.io/developer/1874172215) |

## What reviewers say

### ARN

[App page](https://appshunter.io/ios/app/arn-music-3/id6743633914)

**Features:** Vision Pro support

**In-app purchases:** none


### CentiGrade Visual Tuner

[App page](https://appshunter.io/ios/app/centigrade-visual-tuner/id6758646319)

This app provides instant, ad-free tuning with a unique rolling trace feature for pitch practice. Its interface dynamically zooms as you approach the target note, offering multiple visual modes and presets for various instruments.

**Highlights:** Instant tuning on launch, Rolling trace for pitch history, Dynamic zoom interface, Fluid wave visualizer, Chromatic, Guitar, Bass presets

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

**In-app purchases:** none


## Frequently asked questions

### Is ARN free?

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

### Is CentiGrade Visual Tuner free?

CentiGrade Visual Tuner costs $0.99, with no in-app purchases.

### Do ARN or CentiGrade Visual Tuner have ads?

Neither ARN nor CentiGrade Visual Tuner shows ads.

### Which is updated more often, ARN or CentiGrade Visual Tuner?

ARN ships an update every 2 weeks, and CentiGrade Visual Tuner every 4 days. Most recently, ARN was updated on October 24, 2026 and CentiGrade Visual Tuner on October 24, 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.*