# Danish21 vs Ether Echo

The clearest difference is ads: Danish21 at none against Ether Echo's shown. Danish21 also leads on update cadence (every 4 days vs every 10 days). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Danish21 sells 1 one-off in-app purchase and Ether Echo sells 8 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Danish21 ships an update every 4 days, Ether Echo every 10 days. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Danish21 | Ether Echo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 10 days |
| Size | 546 MB | 84 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [OLE PETTER HAUGEN](https://appshunter.io/developer/1831337755) | [Infinite Ether Interactive Inc.](https://appshunter.io/developer/6804060849) |

## What reviewers say

### Danish21

[App page](https://appshunter.io/ios/app/danish21/id6753718855)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Danish21 Pro | $19.99 | one-time |


### Ether Echo

[App page](https://appshunter.io/ios/app/ether-echo-learn-languages/id6804060847)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lite | $9.99 | per month |
| Starter | $24.99 | per month |
| Regular | $39.99 | per month |
| Intensive | $79.99 | per month |
| Lite Annual | $99.99 | per year |
| Starter Annual | $249.99 | per year |
| Regular Annual | $399.99 | per year |
| Intensive Annual | $699.99 | per year |


## Frequently asked questions

### Is Danish21 free?

Danish21 is free to download, with in-app purchases available.

### Is Ether Echo free?

Ether Echo is free to download, with in-app purchases available.

### Do Danish21 or Ether Echo have ads?

Ether Echo shows ads; Danish21 does not.

### Which is updated more often, Danish21 or Ether Echo?

Danish21 ships an update every 4 days, and Ether Echo every 10 days. Most recently, Danish21 was updated on October 6, 2026 and Ether Echo on October 8, 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.*