# CASSY App vs Mixd Groups

The clearest difference is review sentiment: Mixd Groups at 100% against CASSY App's 60%. Mixd Groups also leads on update cadence (fortnightly vs every 3 months). CASSY App's advantage is monetization model (free vs paid) and iOS requirement (15.0 vs 18.0). 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.

CASSY App ships an update every 3 months, Mixd Groups fortnightly. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | CASSY App | Mixd Groups |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | **Free** | Paid |
| Size | 76 MB | 15 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LD DIDACTIC GmbH](https://appshunter.io/developer/1083056850) | [Igor Dukhovny](https://appshunter.io/developer/1692290036) |

## What reviewers say

### CASSY App

[App page](https://appshunter.io/ios/app/cassy-app/id1083056851)

Control scientific measurement devices and display data on your mobile device. Analyze, store, and share results without a PC. Supports a wide range of physics, chemistry, and biology sensors.

**Highlights:** Control CASSY devices, Display measurements (analog/digital, tables, diagrams), Evaluate and store data, Share results wirelessly, Support for physics, chemistry, and biology sensors, WebDAV server integration

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

**In-app purchases:** none


### Mixd Groups

[App page](https://appshunter.io/ios/app/mixd-groups/id6762473954)

Facilitate dynamic group formation for classrooms with engaging animations. Balance teams by skill, gender, or both, with manual adjustments before display. Export team assignments and manage groups efficiently.

**Highlights:** Dynamic team presentation with animations, Balance teams by skill, gender, or both, Manual team adjustments, Export team assignments (PDF, PNG), Group management with up to 64 members, CSV import/export for members, iCloud synchronization

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

**In-app purchases:** none


## Frequently asked questions

### Is CASSY App free?

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

### Is Mixd Groups free?

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

### Do CASSY App or Mixd Groups have ads?

Neither CASSY App nor Mixd Groups shows ads.

### Which is updated more often, CASSY App or Mixd Groups?

CASSY App ships an update every 3 months, and Mixd Groups fortnightly. Most recently, CASSY App was updated on October 24, 2026 and Mixd Groups on October 12, 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.*