# Zeus IoT vs MAXON PumpCalc

The clearest difference is update cadence: MAXON PumpCalc at every 10 days against Zeus IoT's every 2 months. MAXON PumpCalc also leads on iOS requirement (13.0 vs 15.1). 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.

Zeus IoT ships an update every 2 months, MAXON PumpCalc every 10 days. The most recent releases landed on September 17, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Zeus IoT | MAXON PumpCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Size | 35 MB | 33 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Onemind Services LLC](https://appshunter.io/developer/1614445078) | [PT MAXON PRIME TECHNOLOGY](https://appshunter.io/developer/1828356764) |

## What reviewers say

### Zeus IoT

[App page](https://appshunter.io/ios/app/zeus-iot/id1614445076)

**Features:** Vision Pro support

**In-app purchases:** none


### MAXON PumpCalc

[App page](https://appshunter.io/ios/app/maxon-pumpcalc/id6748975011)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zeus IoT free?

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

### Is MAXON PumpCalc free?

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

### Do Zeus IoT or MAXON PumpCalc have ads?

Neither Zeus IoT nor MAXON PumpCalc shows ads.

### Which is updated more often, Zeus IoT or MAXON PumpCalc?

Zeus IoT ships an update every 2 months, and MAXON PumpCalc every 10 days. Most recently, Zeus IoT was updated on September 17, 2026 and MAXON PumpCalc on September 7, 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.*