# SFK vs LagerSoft

The clearest difference is update cadence: LagerSoft at every 3 weeks against SFK's every 4 months. LagerSoft also leads on iOS requirement (13.0 vs 15.0). 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.

SFK ships an update every 4 months, LagerSoft every 3 weeks. The most recent releases landed on September 16, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | SFK | LagerSoft |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Size | 50 MB | 39 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Barnabas Buecher](https://appshunter.io/developer/1207945658) | [Zeitmechanik GmbH](https://appshunter.io/developer/1657387374) |

## What reviewers say

### SFK

[App page](https://appshunter.io/ios/app/sfk/id1207945659)

**Features:** macOS Compatibility

**In-app purchases:** none


### LagerSoft

[App page](https://appshunter.io/ios/app/lagersoft/id6444856932)

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

**In-app purchases:** none


## Frequently asked questions

### Is SFK free?

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

### Is LagerSoft free?

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

### Do SFK or LagerSoft have ads?

Neither SFK nor LagerSoft shows ads.

### Which is updated more often, SFK or LagerSoft?

SFK ships an update every 4 months, and LagerSoft every 3 weeks. Most recently, SFK was updated on September 16, 2026 and LagerSoft on September 18, 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.*