# KaChat vs Fabius

The clearest difference is in-app purchases: KaChat at none against Fabius's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Fabius sells 3 one-off in-app purchases. KaChat asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | KaChat | Fabius |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (39 ratings)](https://appshunter.io/ios/app/kachat/id6759102359/reviews)** | — |
| Number of ratings | **39** | — |
| Positive reviews | 94.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Free | — |
| Size | 66 MB | 68 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Cyber Ventures LLC](https://appshunter.io/developer/1841001762) | [Subhi Mukbel](https://appshunter.io/developer/6806046893) |

## What reviewers say

### KaChat

[App page](https://appshunter.io/ios/app/kachat/id6759102359)

This secure messaging app utilizes the Kasia protocol and KASPA BlockDAG network for instant communication. It offers a private and efficient way to connect with others.

**Highlights:** Secure instant messaging, Kasia protocol integration, KASPA BlockDAG network, Cross-platform support

**Features:** Siri integration, Vision Pro support

**In-app purchases:** none


### Fabius

[App page](https://appshunter.io/ios/app/fabius/id6806862609)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1,400 Credits | $4.99 | one-time |
| 6,200 Credits | $19.99 | one-time |
| 17,000 Credits | $49.99 | one-time |


## Frequently asked questions

### Is KaChat free?

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

### Is Fabius free?

Fabius is free to download, with in-app purchases available.

### Do KaChat or Fabius have ads?

Neither KaChat nor Fabius shows ads.

### Which is updated more often, KaChat or Fabius?

KaChat ships an update weekly, and Fabius weekly. Most recently, KaChat was updated on October 24, 2026 and Fabius on October 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.*