# sf_ota vs Crypto Key

The clearest difference is iOS requirement: sf_ota at 12.0 against Crypto Key's 16.0. On price 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 | sf_ota | Crypto Key |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 3 days | — |
| Size | 31 MB | 3 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Weida Technology Co., Ltd.](https://appshunter.io/developer/1650534686) | [ORIENT VISION SHIPPING LIMITED](https://appshunter.io/developer/1645273025) |

## What reviewers say

### sf_ota

[App page](https://appshunter.io/ios/app/sf-ota/id6502590914)

**In-app purchases:** none


### Crypto Key

[App page](https://appshunter.io/ios/app/crypto-key-securesafe/id6758374861)

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

**In-app purchases:** none


## Frequently asked questions

### Is sf_ota free?

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

### Is Crypto Key free?

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

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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.*