# Crassus vs JP i

The clearest difference is update cadence: JP i at every 5 weeks against Crassus's every 15 months. JP i 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.

Crassus ships an update every 15 months, JP i every 5 weeks. The most recent releases landed on September 17, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Crassus | JP i |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 5 weeks** |
| Size | 76 MB | 19 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Crassus GmbH & Co. KG](https://appshunter.io/developer/1475104093) | [JUDO Wasseraufbereitung GmbH](https://appshunter.io/developer/412864390) |

## What reviewers say

### Crassus

[App page](https://appshunter.io/ios/app/crassus/id538410244)

**Features:** macOS Compatibility

**In-app purchases:** none


### JP i

[App page](https://appshunter.io/ios/app/jp-i-kom/id6745804213)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Crassus free?

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

### Is JP i free?

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

### Do Crassus or JP i have ads?

Neither Crassus nor JP i shows ads.

### Which is updated more often, Crassus or JP i?

Crassus ships an update every 15 months, and JP i every 5 weeks. Most recently, Crassus was updated on September 17, 2026 and JP i on September 16, 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.*