# SFK vs GLASmatic go

The clearest difference is iOS requirement: GLASmatic go at 12.0 against SFK's 15.0. On price, update cadence, ads and in-app purchases 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, GLASmatic go every 2 months. The most recent releases landed on September 16, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | SFK | GLASmatic go |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 50 MB | 6 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Barnabas Buecher](https://appshunter.io/developer/1207945658) | [bührli dataplan GLASmatic® gmbh](https://appshunter.io/developer/1445019316) |

## What reviewers say

### SFK

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

**Features:** macOS Compatibility

**In-app purchases:** none


### GLASmatic go

[App page](https://appshunter.io/ios/app/glasmatic-go/id1445019317)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SFK free?

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

### Is GLASmatic go free?

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

### Do SFK or GLASmatic go have ads?

Neither SFK nor GLASmatic go shows ads.

### Which is updated more often, SFK or GLASmatic go?

SFK ships an update every 4 months, and GLASmatic go every 2 months. Most recently, SFK was updated on September 16, 2026 and GLASmatic go on September 8, 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.*