# OTG Flash Pro vs Micro Charge

The clearest difference is device support: OTG Flash Pro at 3 against Micro Charge's 1. OTG Flash Pro also leads on iOS requirement (14.0 vs 16.0). On price, ads and in-app purchases 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 | OTG Flash Pro | Micro Charge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | — |
| Size | 136 MB | 78 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [裕雨 程](https://appshunter.io/developer/1079877476) | [UDAYA TECHNOLOGY CO., LTD](https://appshunter.io/developer/1040342759) |

## What reviewers say

### OTG Flash Pro

[App page](https://appshunter.io/ios/app/otg-flash-pro/id6752880818)

**In-app purchases:** none


### Micro Charge

[App page](https://appshunter.io/ios/app/micro-charge/id6774506838)

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

**In-app purchases:** none


## Frequently asked questions

### Is OTG Flash Pro free?

OTG Flash Pro is free to download, with no in-app purchases.

### Is Micro Charge free?

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

### Do OTG Flash Pro or Micro Charge have ads?

Neither OTG Flash Pro nor Micro Charge 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.*