KaChat vs Fabius
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KaChat
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.
- Secure instant messaging
- Kasia protocol integration
- KASPA BlockDAG network
- Cross-platform support
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KaChat is instant messaging app based on Kasia protocol over KASPA BlockDAG network
Fabius
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Fabius lets you create your own AI agents and put them to work. DESIGN YOUR AGENTS Give each agent its own personality, instructions, model, and tools. A research assistant, a writing partner, a support bot — you decide what each one knows and what it is allowed to do. BRING YOUR KNOWLEDGE Upload documents and images, and your agents use them to give grounded, specific answers. CONNECT YOUR CHANNELS Link a Telegram bot and your agent answers there too. PRIVATE BY DESIGN No ads, no analytics, no tracking. Your conversations belong to you, and you can delete your account — and everything with it — anytime, right from Settings.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | KaChat | Fabius |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (39 ratings) — better | — |
| Positive reviews | 94.4% of reviews | — |
| Number of ratings | 39 — better | — |
| Update frequency | Weekly | Weekly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 66 MB | 68 MB |
| Age rating | 17+ | 12+ |
| Developer | Cyber Ventures LLC | Subhi Mukbel |
In-app purchases
KaChat
No in-app purchases
Fabius
- 1,400 Credits$4.99
- 6,200 Credits$19.99
- 17,000 Credits$49.99
