# InterLock vs ESTAR Enduser

The clearest difference is update cadence: ESTAR Enduser at every 6 weeks against InterLock's every 25 months. InterLock's advantage is iOS requirement (10.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

InterLock ships an update every 25 months, ESTAR Enduser every 6 weeks. The most recent releases landed on September 29, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | InterLock | ESTAR Enduser |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 6 weeks** |
| Size | 22 MB | 51 MB |
| Requires iOS | **10.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Justec(shenzhen)Co.,Ltd](https://appshunter.io/developer/1207703452) | [JUAN WANG](https://appshunter.io/developer/1650350517) |

## What reviewers say

### InterLock

[App page](https://appshunter.io/ios/app/interlock/id1474177115)

**Features:** macOS Compatibility

**In-app purchases:** none


### ESTAR Enduser

[App page](https://appshunter.io/ios/app/estar-enduser/id6443897189)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is InterLock free?

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

### Is ESTAR Enduser free?

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

### Do InterLock or ESTAR Enduser have ads?

Neither InterLock nor ESTAR Enduser shows ads.

### Which is updated more often, InterLock or ESTAR Enduser?

InterLock ships an update every 25 months, and ESTAR Enduser every 6 weeks. Most recently, InterLock was updated on September 29, 2026 and ESTAR Enduser on October 5, 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.*