# fiREG vs Sis Work

The clearest difference is ads: Sis Work at none against fiREG's shown. Sis Work also leads on iOS requirement (13.0 vs 15.6). On price, update cadence, 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.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on September 15, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | fiREG | Sis Work |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Size | 38 MB | 106 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [fws online Kft.](https://appshunter.io/developer/588712530) | [ASSA ABLOY Opening Solutions Hungary Kft](https://appshunter.io/developer/1102976407) |

## What reviewers say

### fiREG

[App page](https://appshunter.io/ios/app/fireg/id1281259100)

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

**In-app purchases:** none


### Sis Work

[App page](https://appshunter.io/ios/app/sis-work/id6450505803)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is fiREG free?

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

### Is Sis Work free?

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

### Do fiREG or Sis Work have ads?

fiREG shows ads; Sis Work does not.

### Which is updated more often, fiREG or Sis Work?

fiREG ships an update every 6 weeks, and Sis Work every 6 weeks. Most recently, fiREG was updated on September 15, 2026 and Sis Work on June 1, 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.*