# RMessenger vs Kolosok

The clearest difference is rating: Kolosok at 5.0 against RMessenger's 4.3. RMessenger's advantage is iOS requirement (16.0 vs 18.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Kolosok holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | RMessenger | Kolosok |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (3 ratings)](https://appshunter.io/ios/app/rmessenger/id6748942957/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/kolosok/id6774756850/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | 81.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Free | Free |
| Size | 91 MB | 45 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Raiffeisenbank Russia](https://appshunter.io/developer/557857168) | [Vitalii Maar - Dda](https://appshunter.io/developer/1843354563) |

## What reviewers say

### RMessenger

[App page](https://appshunter.io/ios/app/rmessenger/id6748942957)

This platform facilitates corporate communication through Mattermost, aiming to streamline team collaboration and enhance communication predictability. It offers robust search capabilities, a flexible channel structure, and technological independence for rapid feature deployment.

**Highlights:** Search with filters, Classic channel structure, Personal, team, open, closed, and project channels, Technological independence, Fast feature deployment

**In-app purchases:** none


### Kolosok

[App page](https://appshunter.io/ios/app/kolosok/id6774756850)

Connect with like-minded individuals through shared interests. Discover and RSVP to events, engage in discussions, and build your social circle. This platform facilitates meaningful connections and community building.

**Highlights:** Community feed with posts, reactions, and comments, Event listings with RSVP and calendar integration, Personal and group chat functionalities, User discovery based on interests and skills, Connect with like-minded individuals

**In-app purchases:** none


## Frequently asked questions

### Is RMessenger free?

RMessenger is free to download, with no in-app purchases.

### Is Kolosok free?

Kolosok is free to download, with no in-app purchases.

### Which has better reviews, RMessenger or Kolosok?

Kolosok is rated higher. RMessenger averages 4.3 out of 5 from 3 ratings, while Kolosok averages 5.0 from 2 ratings.

### Do RMessenger or Kolosok have ads?

Neither RMessenger nor Kolosok shows ads.

### Which is updated more often, RMessenger or Kolosok?

RMessenger ships an update weekly, and Kolosok weekly. Most recently, RMessenger was updated on October 30, 2026 and Kolosok on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*