# Crassus vs JU

The clearest difference is update cadence: JU at every 3 months against Crassus's every 15 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.

Crassus ships an update every 15 months, JU every 3 months. The most recent releases landed on September 17, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | Crassus | JU |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 12.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 76 MB | 10 MB |
| Requires iOS | 15.1 | **14.0** |
| 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


### JU

[App page](https://appshunter.io/ios/app/ju-control/id1231415741)

Remotely control and monitor network-enabled devices from JUDO. Receive notifications for important events and adjust settings for optimal water quality. Manage multiple devices, perfect for landlords or those with several JUDO products.

**Highlights:** Remote device control, Real-time status monitoring, Push notifications for events, Adjustable water quality settings, Manage multiple devices, Backwash reminder function

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Crassus free?

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

### Is JU free?

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

### Do Crassus or JU have ads?

Neither Crassus nor JU shows ads.

### Which is updated more often, Crassus or JU?

Crassus ships an update every 15 months, and JU every 3 months. Most recently, Crassus was updated on September 17, 2026 and JU on June 10, 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.*