# Threema OnPrem vs Librem Chat

The clearest difference is rating: Threema OnPrem at 5.0 against Librem Chat's 3.8. Librem Chat's advantage is review sentiment (33% vs 0%) and ratings volume (11 vs 2). On price, update cadence, 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.

Threema OnPrem holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Librem Chat has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 0% of Threema OnPrem's written reviews are positive against 33% of Librem Chat's, so the app with the better star average is not the one people write more warmly about.

Threema OnPrem ships an update fortnightly, Librem Chat monthly. The most recent releases landed on September 9, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Threema OnPrem | Librem Chat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/threema-onprem/id1348687756/reviews)** | [3.8 (11 ratings)](https://appshunter.io/ios/app/librem-chat/id1456162175/reviews) |
| Number of ratings | 2 | **11** |
| Positive reviews | 0.0% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | Free |
| Size | 102 MB | 116 MB |
| Requires iOS | 17.0 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Threema GmbH](https://appshunter.io/developer/535112011) | [PURISM, SPC](https://appshunter.io/developer/1448949014) |

## What reviewers say

### Threema OnPrem

[App page](https://appshunter.io/ios/app/threema-onprem/id1348687756)

This secure messaging solution offers organizations complete data sovereignty by hosting on their own servers. It provides end-to-end encrypted communication for teams, including voice and video calls, and secure file sharing, all protected by PIN or fingerprint.

**Highlights:** Self-hosted solution, Complete data sovereignty, End-to-end encrypted calls, Secure file sharing, Cross-platform compatibility, PIN/fingerprint chat protection

**Features:** Apple Wallet

**In-app purchases:** none


### Librem Chat

[App page](https://appshunter.io/ios/app/librem-chat/id1456162175)

This app provides secure text, voice, and video communication with end-to-end encryption. Share images, videos, and files in chat rooms while keeping conversations private. It is free and open-source software.

**Highlights:** End-to-end encryption, Text chat rooms, Voice and video calls, Image, video, and file sharing, Free and open-source

**Features:** macOS Compatibility, Siri integration

**In-app purchases:** none


## Frequently asked questions

### Is Threema OnPrem free?

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

### Is Librem Chat free?

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

### Which has better reviews, Threema OnPrem or Librem Chat?

Threema OnPrem is rated higher. Threema OnPrem averages 5.0 out of 5 from 2 ratings, while Librem Chat averages 3.8 from 11 ratings.

### Do Threema OnPrem or Librem Chat have ads?

Neither Threema OnPrem nor Librem Chat shows ads.

### Which is updated more often, Threema OnPrem or Librem Chat?

Threema OnPrem ships an update fortnightly, and Librem Chat monthly. Most recently, Threema OnPrem was updated on September 9, 2026 and Librem Chat on June 1, 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.*