# FillBlock vs Katam

The clearest difference is update cadence: Katam at every 5 weeks against FillBlock's every 10 months. FillBlock's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

FillBlock ships an update every 10 months, Katam every 5 weeks. The most recent releases landed on October 25, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | FillBlock | Katam |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 weeks** |
| Size | 60 MB | 14 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [kazumasa fujihara](https://appshunter.io/developer/1516573304) | [seiji honda](https://appshunter.io/developer/1896430544) |

## What reviewers say

### FillBlock

[App page](https://appshunter.io/ios/app/fillblock/id1533974241)

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

**In-app purchases:** none


### Katam

[App page](https://appshunter.io/ios/app/katam-kerow/id6785136424)

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

**In-app purchases:** none


## Frequently asked questions

### Is FillBlock free?

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

### Is Katam free?

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

### Do FillBlock or Katam have ads?

Neither FillBlock nor Katam shows ads.

### Which is updated more often, FillBlock or Katam?

FillBlock ships an update every 10 months, and Katam every 5 weeks. Most recently, FillBlock was updated on October 25, 2026 and Katam on October 9, 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.*