Comparison

CollaChat vs 09GSM

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Read full description

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

About

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.

Highlights
  • VoIP calls worldwide
  • Uses data connection (2G/3G/4G/WiFi)
  • Connects to landlines and mobiles
  • Latest communication technologies
  • Easy to use interface
Features
Read full description

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

CollaChat4 screens
09GSM4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 09GSM sells 3 one-off in-app purchases. CollaChat asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

CollaChat ships an update every 2 months, 09GSM every 3 months. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
CollaChat versus 09GSM: the parameters behind the verdict, then further details
ParameterCollaChat09GSM
PriceFreeFree
Rating5.0 (1 ratings) — better1.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings11
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size288 MB33 MB
Age rating4+4+
DeveloperCURL TECH PTE. LTD.Aymen Abuajayla

Customer experience

CollaChat

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

09GSM

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

CollaChat

No in-app purchases

3 purchases

09GSM

One-time3
  • 09GSM Credit-1$0.99
  • 09GSM Credit-2$1.99
  • 09GSM Credit-3$2.99

Questions

Is CollaChat free?
CollaChat is free to download, with no in-app purchases.
Is 09GSM free?
09GSM is free to download, with in-app purchases available.
Which has better reviews, CollaChat or 09GSM?
CollaChat is rated higher. CollaChat averages 5.0 out of 5 from 1 ratings, while 09GSM averages 1.0 from 1 ratings.
Do CollaChat or 09GSM have ads?
Neither CollaChat nor 09GSM shows ads.
Which is updated more often, CollaChat or 09GSM?
CollaChat ships an update every 2 months, and 09GSM every 3 months. Most recently, CollaChat was updated on November 3, 2026 and 09GSM on November 3, 2026.

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