# Key Calculator vs Tone Track

The clearest difference is iOS requirement: Key Calculator at 12.0 against Tone Track's 15.6. 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.

## The numbers

| Metric | Key Calculator | Tone Track |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Size | 27 MB | 9 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [瑞勤 李](https://appshunter.io/developer/1401713785) | [Ngan Le](https://appshunter.io/developer/840301173) |

## What reviewers say

### Key Calculator

[App page](https://appshunter.io/ios/app/key-calculator/id6740821637)

**Features:** macOS Compatibility

**In-app purchases:** none


### Tone Track

[App page](https://appshunter.io/ios/app/tone-track/id6741022633)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Key Calculator free?

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

### Is Tone Track free?

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

### Do Key Calculator or Tone Track have ads?

Neither Key Calculator nor Tone Track shows ads.

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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.*