CollaChat vs 09GSM
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
09GSM
Make international calls using your data connection. This app connects you to landlines and mobile devices worldwide, leveraging the latest technology for easy and reliable communication.
- VoIP calls worldwide
- Uses data connection (2G/3G/4G/WiFi)
- Connects to landlines and mobiles
- Latest communication technologies
- Easy to use interface
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09GSM is a mobile application for iPhone which offers VoIP Calls from data enabled mobile phones (2G/3G/4G or WiFi) to any landline or mobile devices around the world. It is a simple app using the latest technologies to connect people easily and keep them connected to each other.
Screenshots
Verdict
The clearest difference is rating: CollaChat at 5.0 against 09GSM's 1.0. CollaChat also leads on in-app purchases (none vs 3) and device support (4 vs 2). On price, ratings volume, update cadence and ads 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. 09GSM sells 3 one-off in-app purchases. CollaChat asks for nothing beyond the download.
CollaChat holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
CollaChat ships an update every 2 months, 09GSM every 3 months. Both last shipped on November 3, 2026.
| Parameter | CollaChat | 09GSM |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 288 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | CURL TECH PTE. LTD. | Aymen Abuajayla |
Customer experience
CollaChat
09GSM
In-app purchases
CollaChat
No in-app purchases
09GSM
- 09GSM Credit-1$0.99
- 09GSM Credit-2$1.99
- 09GSM Credit-3$2.99









