# DoorFast vs Amatech

The clearest difference is update cadence: Amatech at monthly against DoorFast's every 7 months. DoorFast's advantage is iOS requirement (12.0 vs 16). 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.

DoorFast ships an update every 7 months, Amatech monthly. The most recent releases landed on October 3, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | DoorFast | Amatech |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Monthly** |
| Size | 114 MB | 97 MB |
| Requires iOS | **12.0** | 16 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [宏根 张](https://appshunter.io/developer/1063018520) | [AMA technology LLC](https://appshunter.io/developer/6773449935) |

## What reviewers say

### DoorFast

[App page](https://appshunter.io/ios/app/doorfast/id1612797322)

**Features:** macOS Compatibility

**In-app purchases:** none


### Amatech

[App page](https://appshunter.io/ios/app/amatech/id6773449933)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DoorFast free?

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

### Is Amatech free?

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

### Do DoorFast or Amatech have ads?

Neither DoorFast nor Amatech shows ads.

### Which is updated more often, DoorFast or Amatech?

DoorFast ships an update every 7 months, and Amatech monthly. Most recently, DoorFast was updated on October 3, 2026 and Amatech on October 13, 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.*