# Emusys vs Colégio Castelo

The clearest difference is update cadence: Colégio Castelo at every 9 days against Emusys's every 6 weeks. Emusys's advantage is iOS requirement (13.4 vs 15.0). 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.

Emusys ships an update every 6 weeks, Colégio Castelo every 9 days. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Emusys | Colégio Castelo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | Free | — |
| Size | 43 MB | 82 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Valin Tecnologia Ltda - ME](https://appshunter.io/developer/1129932633) | [POLYGONUS LTDA](https://appshunter.io/developer/1352794431) |

## What reviewers say

### Emusys

[App page](https://appshunter.io/ios/app/emusys/id1129932634)

This platform connects music school students, teachers, and administrators. Students can view classes, reschedule, and rate teachers, while teachers manage schedules and make notes. Administrators gain tools for managing students, teachers, and finances.

**Highlights:** View class schedules, Reschedule lessons, Rate teachers, Metronome and audio recording, Teacher class notes, Administrative management tools

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

**In-app purchases:** none


### Colégio Castelo

[App page](https://appshunter.io/ios/app/colegio-castelo/id6476771686)

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

**In-app purchases:** none


## Frequently asked questions

### Is Emusys free?

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

### Is Colégio Castelo free?

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

### Do Emusys or Colégio Castelo have ads?

Neither Emusys nor Colégio Castelo shows ads.

### Which is updated more often, Emusys or Colégio Castelo?

Emusys ships an update every 6 weeks, and Colégio Castelo every 9 days. Most recently, Emusys was updated on November 2, 2026 and Colégio Castelo on November 4, 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.*