# Secure Client vs ESP

The clearest difference is in-app purchases: Secure Client at none against ESP's 1. Secure Client also leads on iOS requirement (10.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. ESP sells 1 one-off in-app purchase. Secure Client asks for nothing beyond the download.

## The numbers

| Metric | Secure Client | ESP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Size | 28 MB | 1 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Guizhou BaishanCloud Technology Co.,Ltd.](https://appshunter.io/developer/1600440866) | [Wuhan FireFrog Technology Co., Ltd.](https://appshunter.io/developer/917083159) |

## What reviewers say

### Secure Client

[App page](https://appshunter.io/ios/app/secure-client/id6443757145)

**Features:** macOS Compatibility

**In-app purchases:** none


### ESP

[App page](https://appshunter.io/ios/app/esp-airlink/id6756355176)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| a cup of coffee | $0.99 | one-time |


## Frequently asked questions

### Is Secure Client free?

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

### Is ESP free?

ESP is free to download, with in-app purchases available.

### Do Secure Client or ESP have ads?

Neither Secure Client nor ESP 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.*