CollaChat vs SPACEJAT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CollaChat
A decentralized, open-source messaging app focused on privacy and data security. It leverages blockchain technology for peer-to-peer communication, offering end-to-end encryption and user control over data storage.
- Decentralized communication network
- End-to-end message encryption
- Open-source client and server
- Multi-device support (Web/Mobile/Desktop)
- Group chats and calls
- Message self-destruction and recall
- Contact and chat locking
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CollaChat is an open source private and decentralized messaging app owned by no one and everyone. It is aimed to leverage blockchain technology to put users back in control of their digital communication, while preserve user experiences that they know and love. Distinguished from the traditional messaging apps, CollaChat has three most important features which revolutionize the communication infrastructure: - Decentralized Colla Network is an unstoppable Web3 decentralized peer-to-peer communication and storage network, Colla DApp (e.g. CollaChat) connects to it via Colla Node. There is no centralized storage and control of user data, users can specify which Node(s) or even easily setup own Node(s) to connect to. - End-to-End Encrypted All messages are end-to-end encrypted, only author and intended recipients can see the content. - Open Source Both Colla Network client side (i.e. Colla DApp, e.g. CollaChat) and server side (i.e. Colla Node) are free and open source for anyone to download, install, run and build own deployment. CollaChat supports Web/Mobile/Desktop and Multi-device. It has most popular messaging and social functions: - Chat (supports text, emoji, voice, photo, video, file, card, supports group chat, supports offline messaging) - Voice/Video Call (supports group call) - Collection & Note - Channel Moreover, it provides some useful privacy protection functions: - Message Self-destruction - Message Recall - Contact/Chat Lock
SPACEJAT
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Your all-in-one, encrypted app for secure chat, video calls, channels, and file sharing. Seamlessly synced across desktop and mobile. Full Description Welcome to Spacejat, the single, secure platform for all your professional and private communication. Tired of switching between apps for chat, video meetings, team channels, and file sharing? Spacejat unifies your entire workflow into one powerful and completely encrypted application. Whether you're collaborating with your team, presenting to a client, or connecting with friends, your privacy and data are our #1 priority. KEY FEATURES: UNIFIED & SECURE CHAT: Experience true privacy. All your 1-to-1 and group messages are protected with state-of-the-art, end-to-end encryption. Your conversations are yours alone. SECURE VIDEO & AUDIO CALLS: Host crystal-clear, encrypted group video calls or private 1-to-1 audio calls. Connect with confidence, knowing your conversations are secure. POWERFUL SCREEN SHARING: Share your screen with a single tap. Perfect for team presentations, remote collaboration, and showing (not just telling) what you mean. SECURE FILE SHARING: Send documents, images, and large video files without compromise. Every file transfer is fully encrypted, protecting your sensitive data. ORGANIZED CHANNELS: Create public or private channels to organize conversations by topic, team, or project. Keep your community or workspace tidy and focused. Experience true privacy and productivity in one app. Download Spacejat today and take back control of your communication.
Screenshots
Verdict
The clearest difference is update cadence: SPACEJAT at fortnightly against CollaChat's every 2 months. CollaChat's advantage is device support (4 vs 2) and iOS requirement (14.0 vs 16.0). On price, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
CollaChat ships an update every 2 months, SPACEJAT fortnightly. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.
| Parameter | CollaChat | SPACEJAT |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 288 MB | 85 MB |
| Age rating | 4+ | 4+ |
| Developer | CURL TECH PTE. LTD. | JATDEV |
In-app purchases
CollaChat
No in-app purchases
SPACEJAT
No in-app purchases









