# Osiris Scalda vs Echo

The clearest difference is update cadence: Echo at every 2 weeks against Osiris Scalda's every 6 months. Osiris Scalda's advantage is iOS requirement (11.0 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.

Osiris Scalda ships an update every 6 months, Echo every 2 weeks. The most recent releases landed on September 7, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Osiris Scalda | Echo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Size | 35 MB | 33 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CACI bv](https://appshunter.io/developer/961337312) | [Krom (NL)](https://appshunter.io/developer/1847971924) |

## What reviewers say

### Osiris Scalda

[App page](https://appshunter.io/ios/app/osiris-scalda/id6744821591)

**Features:** macOS Compatibility

**In-app purchases:** none


### Echo

[App page](https://appshunter.io/ios/app/echo-reflective-learning/id6754340366)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Osiris Scalda free?

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

### Is Echo free?

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

### Do Osiris Scalda or Echo have ads?

Neither Osiris Scalda nor Echo shows ads.

### Which is updated more often, Osiris Scalda or Echo?

Osiris Scalda ships an update every 6 months, and Echo every 2 weeks. Most recently, Osiris Scalda was updated on September 7, 2026 and Echo on September 14, 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.*