# EnergiSync vs FlashKey

The clearest difference is price: EnergiSync at Free against FlashKey's $1.99. EnergiSync also leads on iOS requirement (12.0 vs 16). On ads, in-app purchases and device support there is nothing between them.

EnergiSync is free to download; FlashKey costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | EnergiSync | FlashKey |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 30 MB | 5 MB |
| Requires iOS | **12.0** | 16 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [深圳市集智电子有限公司](https://appshunter.io/developer/1655111205) | [小虎 周](https://appshunter.io/developer/1793951596) |

## What reviewers say

### EnergiSync

[App page](https://appshunter.io/ios/app/energisync/id6670536292)

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

**In-app purchases:** none


### FlashKey

[App page](https://appshunter.io/ios/app/flashkey-quick-phrase-input/id6756609473)

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

**In-app purchases:** none


## Frequently asked questions

### Is EnergiSync free?

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

### Is FlashKey free?

FlashKey costs $1.99, with no in-app purchases.

### Do EnergiSync or FlashKey have ads?

Neither EnergiSync nor FlashKey shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*