Elioz vs CollaChat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Elioz
This communication app facilitates connection for deaf, hard of hearing, and aphasic individuals. It offers features like audio message translation, sign language support, and optimized video calls for easier interaction with friends, family, and colleagues.
- Audio message translation
- Sign language translation
- Optimized video calls
- Real-time text chat
- Secure communications
- Phone calls with translation agent
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Elioz is a free communication application for deaf, hard of hearing, aphasic and their friends, family, collegues. Elioz offers adapted features to stay connected with the people you care about the most. What can I do with Elioz? - Translation of audio messages left by your contacts - Unified Messaging allows to record and translate in text or in sign language audio messages left; - Phone via a communication agent - Make and receive landlines and mobiles phone calls translated, both ways, by a communication agent: sign language, text subtitling, foreign language, .... + Elioz is available from anywhere and on any operating system: Windows, Mac, iPad, iPhone. + Automatic captioning calls for the hard of hearing (paid service); + Telephone relay via sign language interpreters for deaf signers (paid service); + Video call optimized for sign language - Most free video call applications are optimized for face-to-face calls or remote meetings. Elioz puts priority on communication in sign language; + Real-time Chat for Smooth Text Chat - Do not wait until your caller has finished typing a sentence before you can read it. The characters are sent once a key is pressed. + Secure Communications - Elioz automatically encrypts communications; This application works with a Elioz account. For more information, visit https://elioz.fr. *Elioz to Elioz calls are free. Your operator may charge a fee. We recommend using an unlimited data plan or or Wi-Fi. Elioz is compliant with total conversation standard (ITU F.703)
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
Screenshots
Verdict
The clearest difference is review sentiment: CollaChat at 100% against Elioz's 50%. CollaChat also leads on rating (5.0 vs 3.0) and update cadence (every 2 months vs every 6 months). On price, ratings volume, 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 holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 50% of Elioz's written reviews are positive against 100% of CollaChat's.
Elioz ships an update every 6 months, CollaChat every 2 months. The most recent releases landed on October 20, 2026 and October 7, 2026 respectively.
| Parameter | Elioz | CollaChat |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 6 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 14.0 | 14.0 |
| Further details — not scored | ||
| Size | 26 MB | 288 MB |
| Age rating | 4+ | 4+ |
| Developer | IVèS | CURL TECH PTE. LTD. |
Customer experience
Elioz
CollaChat
In-app purchases
Elioz
No in-app purchases
CollaChat
No in-app purchases









