# bossMaintenance vs eThemis

The clearest difference is update cadence: eThemis at every 2 months against bossMaintenance's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

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

bossMaintenance ships an update every 4 months, eThemis every 2 months. The most recent releases landed on September 6, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | bossMaintenance | eThemis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 103 MB | 37 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [bossinfo.ch AG](https://appshunter.io/developer/1567879756) | [Herborner Pumpentechnik GmbH & Co KG](https://appshunter.io/developer/1785170253) |

## What reviewers say

### bossMaintenance

[App page](https://appshunter.io/ios/app/bossmaintenance/id6499280428)

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

**In-app purchases:** none


### eThemis

[App page](https://appshunter.io/ios/app/ethemis/id6739421649)

**In-app purchases:** none


## Frequently asked questions

### Is bossMaintenance free?

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

### Is eThemis free?

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

### Do bossMaintenance or eThemis have ads?

Neither bossMaintenance nor eThemis shows ads.

### Which is updated more often, bossMaintenance or eThemis?

bossMaintenance ships an update every 4 months, and eThemis every 2 months. Most recently, bossMaintenance was updated on September 6, 2026 and eThemis on September 9, 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.*