# AsFWUpdater vs ytem™

The clearest difference is update cadence: ytem™ at every 4 weeks against AsFWUpdater's every 4 months. AsFWUpdater's advantage is iOS requirement (12.3 vs 14). 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.

AsFWUpdater ships an update every 4 months, ytem™ every 4 weeks. The most recent releases landed on June 10, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | AsFWUpdater | ytem™ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/asfwupdater/id1277587497/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 weeks** |
| Monetization | Free | — |
| Size | 5 MB | 121 MB |
| Requires iOS | **12.3** | 14 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Asterisk Corporation](https://appshunter.io/developer/349097721) | [Seagull Scientific](https://appshunter.io/developer/1150556625) |

## What reviewers say

### AsFWUpdater

[App page](https://appshunter.io/ios/app/asfwupdater/id1277587497)

Update the firmware on specific AsReader sled and guntype devices. Download the latest firmware files and follow step-by-step instructions to connect your device and perform the update.

**Highlights:** Download latest firmware versions, Update firmware on supported devices, Supports Barcode and RFID models, Step-by-step update instructions, Update RFID modules separately

**In-app purchases:** none


### ytem™

[App page](https://appshunter.io/ios/app/ytem/id6748323482)

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

**In-app purchases:** none


## Frequently asked questions

### Is AsFWUpdater free?

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

### Is ytem™ free?

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

### Do AsFWUpdater or ytem™ have ads?

Neither AsFWUpdater nor ytem™ shows ads.

### Which is updated more often, AsFWUpdater or ytem™?

AsFWUpdater ships an update every 4 months, and ytem™ every 4 weeks. Most recently, AsFWUpdater was updated on June 10, 2026 and ytem™ on September 19, 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.*