# HLK vs ESP

The clearest difference is in-app purchases: HLK at none against ESP's 1. HLK also leads on iOS requirement (8.0 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. HLK asks for nothing beyond the download.

## The numbers

| Metric | HLK | ESP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 19 MB | 1 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [深圳市海凌科电子有限公司](https://appshunter.io/developer/1116319863) | [Wuhan FireFrog Technology Co., Ltd.](https://appshunter.io/developer/917083159) |

## What reviewers say

### HLK

[App page](https://appshunter.io/ios/app/hlk-dio16/id1444494500)

**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 HLK free?

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

### Is ESP free?

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

### Do HLK or ESP have ads?

Neither HLK 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.*