# CertiDox vs Lock System

The clearest difference is iOS requirement: Lock System at 10.0 against CertiDox's 15.6. 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.

## The numbers

| Metric | CertiDox | Lock System |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Size | 43 MB | 14 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TOKEN ECONOMICS](https://appshunter.io/developer/1441627219) | [tieta](https://appshunter.io/developer/1095085261) |

## What reviewers say

### CertiDox

[App page](https://appshunter.io/ios/app/certidox/id1441627220)

**Features:** macOS Compatibility

**In-app purchases:** none


### Lock System

[App page](https://appshunter.io/ios/app/lock-system/id6753684492)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CertiDox free?

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

### Is Lock System free?

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

### Do CertiDox or Lock System have ads?

Neither CertiDox nor Lock System 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.*