# Loop Messenger vs SoStack

The clearest difference is ratings volume: Loop Messenger at 40 against SoStack's 3. Loop Messenger also leads on update cadence (every 10 days vs every 3 weeks) and device support (4 vs 2). SoStack's advantage is review sentiment (100% vs 90%). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for Loop Messenger against 5.0 for SoStack. That said, the two scores are not equally well evidenced: Loop Messenger has 40 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 90% of Loop Messenger's written reviews are positive against 100% of SoStack's.

Loop Messenger ships an update every 10 days, SoStack every 3 weeks. The most recent releases landed on October 17, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Loop Messenger | SoStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (40 ratings)](https://appshunter.io/ios/app/loop-messenger/id1258695795/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sostack/id6759353874/reviews)** |
| Number of ratings | **40** | 3 |
| Positive reviews | 89.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 106 MB | 43 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Collaborative Tools Inc.](https://appshunter.io/developer/1537219329) | [SOSTACK LIMITED LIABILITY COMPANY](https://appshunter.io/developer/1878252494) |

## What reviewers say

### Loop Messenger

[App page](https://appshunter.io/ios/app/loop-messenger/id1258695795)

Organize your group conversations with this secure and spam-free messaging app. It offers streamlined chat, direct messaging within groups, and extensive customization options. Ideal for various communities seeking efficient and private communication.

**Highlights:** Streamlined group messaging, Direct messaging in groups, Customizable chat experience, Industry-leading security, Intuitive interface, Robust group controls

**In-app purchases:** none


### SoStack

[App page](https://appshunter.io/ios/app/sostack/id6759353874)

This app facilitates group communication and coordination with private chats and shared calendars. Plan events, manage RSVPs, and discover local public groups for updates. It prioritizes user control and privacy with in-app account deletion.

**Highlights:** Private group messaging, Shared calendars and events, RSVP and planning tools, Follow verified public groups, Invite via SMS, Location-based discovery

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Loop Messenger free?

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

### Is SoStack free?

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

### Which has better reviews, Loop Messenger or SoStack?

SoStack is rated higher. Loop Messenger averages 4.9 out of 5 from 40 ratings, while SoStack averages 5.0 from 3 ratings.

### Do Loop Messenger or SoStack have ads?

Neither Loop Messenger nor SoStack shows ads.

### Which is updated more often, Loop Messenger or SoStack?

Loop Messenger ships an update every 10 days, and SoStack every 3 weeks. Most recently, Loop Messenger was updated on October 17, 2026 and SoStack on October 10, 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.*