# DIM vs Themis OS

The clearest difference is update cadence: Themis OS at every 11 days against DIM's every 33 months. Themis OS also leads on device support. DIM's advantage is iOS requirement (12.0 vs 15.0). On price 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.

DIM ships an update every 33 months, Themis OS every 11 days. The most recent releases landed on October 13, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | DIM | Themis OS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | Every 33 months | **Every 11 days** |
| Size | 36 MB | 29 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [IMV Immobilien Management GmbH](https://appshunter.io/developer/1688010669) | [Themisbaumanagement](https://appshunter.io/developer/1769672824) |

## What reviewers say

### DIM

[App page](https://appshunter.io/ios/app/dim/id6449195525)

**In-app purchases:** none


### Themis OS

[App page](https://appshunter.io/ios/app/themis-os/id6740326251)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DIM free?

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

### Is Themis OS free?

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

### Which is updated more often, DIM or Themis OS?

DIM ships an update every 33 months, and Themis OS every 11 days. Most recently, DIM was updated on October 13, 2026 and Themis OS on September 29, 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.*