# Castells.app vs Komtainer

The clearest difference is update cadence: Castells.app at every 2 days against Komtainer's every 2 months. 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.

Castells.app ships an update every 2 days, Komtainer every 2 months. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Castells.app | Komtainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Size | 98 MB | 58 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rental Ninja SL](https://appshunter.io/developer/1259904739) | [Kompini Technologies SL](https://appshunter.io/developer/1485564017) |

## What reviewers say

### Castells.app

[App page](https://appshunter.io/ios/app/castellsapp/id1502264045)

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

**In-app purchases:** none


### Komtainer

[App page](https://appshunter.io/ios/app/komtainer/id6742538513)

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

**In-app purchases:** none


## Frequently asked questions

### Is Castells.app free?

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

### Is Komtainer free?

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

### Do Castells.app or Komtainer have ads?

Neither Castells.app nor Komtainer shows ads.

### Which is updated more often, Castells.app or Komtainer?

Castells.app ships an update every 2 days, and Komtainer every 2 months. Most recently, Castells.app was updated on September 23, 2026 and Komtainer on September 22, 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.*