# Compass For Blind vs Harmonix OTC

The clearest difference is iOS requirement: Harmonix OTC at 11.0 against Compass For Blind'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 | Compass For Blind | Harmonix OTC |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Size | 1 MB | 128 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [乃君 黄](https://appshunter.io/developer/1337343608) | [Huizhou Jinghao Medical Technology Co.,Ltd.](https://appshunter.io/developer/1543340471) |

## What reviewers say

### Compass For Blind

[App page](https://appshunter.io/ios/app/compass-for-blind/id6746974341)

**Features:** macOS Compatibility

**In-app purchases:** none


### Harmonix OTC

[App page](https://appshunter.io/ios/app/harmonix-otc/id6756475067)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Compass For Blind free?

Compass For Blind is free to download, with no in-app purchases.

### Is Harmonix OTC free?

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

### Do Compass For Blind or Harmonix OTC have ads?

Neither Compass For Blind nor Harmonix OTC 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.*