# Knockit Driver vs JustFast User

The clearest difference is update cadence: Knockit Driver at every 3 days against JustFast User's monthly. Knockit Driver also leads on iOS requirement (13.0 vs 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.

Knockit Driver ships an update every 3 days, JustFast User monthly. The most recent releases landed on February 23, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Knockit Driver | JustFast User |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Monthly |
| Size | 41 MB | 86 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [knockit ltd](https://appshunter.io/developer/1798933686) | [Just Fast Cleaning Services LLC](https://appshunter.io/developer/1889417814) |

## What reviewers say

### Knockit Driver

[App page](https://appshunter.io/ios/app/knockit-driver/id6742548722)

**Features:** macOS Compatibility

**In-app purchases:** none


### JustFast User

[App page](https://appshunter.io/ios/app/justfast-user/id6749563182)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Knockit Driver free?

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

### Is JustFast User free?

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

### Do Knockit Driver or JustFast User have ads?

Neither Knockit Driver nor JustFast User shows ads.

### Which is updated more often, Knockit Driver or JustFast User?

Knockit Driver ships an update every 3 days, and JustFast User monthly. Most recently, Knockit Driver was updated on February 23, 2026 and JustFast User on September 11, 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.*