# Lock & Track vs ESSL Client

The clearest difference is update cadence: Lock & Track at every 3 weeks against ESSL Client's every 6 weeks. 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.

Lock & Track ships an update every 3 weeks, ESSL Client every 6 weeks. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Lock & Track | ESSL Client |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Size | 164 MB | 40 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [247 COMMERCE LIMITED](https://appshunter.io/developer/1622774791) | [COMPUTER FRIENDS I.T SERVICES LTD](https://appshunter.io/developer/633426579) |

## What reviewers say

### Lock & Track

[App page](https://appshunter.io/ios/app/lock-and-track/id6670475787)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### ESSL Client

[App page](https://appshunter.io/ios/app/essl-client/id6711344418)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lock & Track free?

Lock & Track is free to download, with no in-app purchases.

### Is ESSL Client free?

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

### Do Lock & Track or ESSL Client have ads?

Neither Lock & Track nor ESSL Client shows ads.

### Which is updated more often, Lock & Track or ESSL Client?

Lock & Track ships an update every 3 weeks, and ESSL Client every 6 weeks. Most recently, Lock & Track was updated on October 16, 2026 and ESSL Client on October 7, 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.*