# Clausius BT vs eOsebna

The clearest difference is iOS requirement: Clausius BT at 13.0 against eOsebna's 16. 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Clausius BT | eOsebna |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 21 MB | 10 MB |
| Requires iOS | **13.0** | 16 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SELTRON d.o.o.](https://appshunter.io/developer/894504883) | [Ministrstvo za digitalno preobrazbo](https://appshunter.io/developer/1649556228) |

## What reviewers say

### Clausius BT

[App page](https://appshunter.io/ios/app/clausius-bt/id1599744081)

**Features:** macOS Compatibility

**In-app purchases:** none


### eOsebna

[App page](https://appshunter.io/ios/app/eosebna/id6443816165)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Clausius BT free?

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

### Is eOsebna free?

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

### Do Clausius BT or eOsebna have ads?

Neither Clausius BT nor eOsebna shows ads.

### Which is updated more often, Clausius BT or eOsebna?

Clausius BT ships an update every 2 months, and eOsebna every 2 months. Most recently, Clausius BT was updated on October 5, 2026 and eOsebna on October 2, 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.*