# Threema OnPrem vs Capsoom

The clearest difference is in-app purchases: Threema OnPrem at none against Capsoom's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Capsoom sells 2 in-app purchases, starting at $2.99 per month. Threema OnPrem asks for nothing beyond the download.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Threema OnPrem | Capsoom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/threema-onprem/id1348687756/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | Free | — |
| Size | 111 MB | 99 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Threema GmbH](https://appshunter.io/developer/535112011) | [21Corp](https://appshunter.io/developer/1880646526) |

## 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


### Capsoom

[App page](https://appshunter.io/ios/app/capsoom/id6771776299)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Capsoom+ Monthly | $2.99 | per month |
| Capsoom+ Yearly | $22.99 | per year |


## Frequently asked questions

### Is Threema OnPrem free?

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

### Is Capsoom free?

Capsoom is free to download, with in-app purchases available.

### Do Threema OnPrem or Capsoom have ads?

Neither Threema OnPrem nor Capsoom shows ads.

### Which is updated more often, Threema OnPrem or Capsoom?

Threema OnPrem ships an update weekly, and Capsoom weekly. Most recently, Threema OnPrem was updated on October 24, 2026 and Capsoom on October 15, 2026.

---

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