# HLK vs ESL management

The clearest difference is iOS requirement: HLK at 8.0 against ESL management's 15.6. On price, update cadence, 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.

HLK ships an update every 2 months, ESL management every 3 months. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | HLK | ESL management |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 19 MB | 44 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [深圳市海凌科电子有限公司](https://appshunter.io/developer/1116319863) | [Sunlux Iot Technology(Guangdong) Inc.](https://appshunter.io/developer/1743931101) |

## What reviewers say

### HLK

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

**Features:** macOS Compatibility

**In-app purchases:** none


### ESL management

[App page](https://appshunter.io/ios/app/esl-management/id6499578929)

**In-app purchases:** none


## Frequently asked questions

### Is HLK free?

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

### Is ESL management free?

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

### Do HLK or ESL management have ads?

Neither HLK nor ESL management shows ads.

### Which is updated more often, HLK or ESL management?

HLK ships an update every 2 months, and ESL management every 3 months. Most recently, HLK was updated on November 2, 2026 and ESL management on November 4, 2026.

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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.*