# Echo vs Biosmile Edu

The clearest difference is update cadence: Biosmile Edu at every 2 weeks against Echo's every 3 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.

Echo ships an update every 3 months, Biosmile Edu every 2 weeks. The most recent releases landed on September 28, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Echo | Biosmile Edu |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 59 MB | 93 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Wail Ashraf](https://appshunter.io/developer/1583763302) | [BAHATTIN BERKE COBAN](https://appshunter.io/developer/1873855595) |

## What reviewers say

### Echo

[App page](https://appshunter.io/ios/app/echo-dent/id6753124614)

**Features:** macOS Compatibility

**In-app purchases:** none


### Biosmile Edu

[App page](https://appshunter.io/ios/app/biosmile-edu/id6761422009)

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

**In-app purchases:** none


## Frequently asked questions

### Is Echo free?

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

### Is Biosmile Edu free?

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

### Do Echo or Biosmile Edu have ads?

Neither Echo nor Biosmile Edu shows ads.

### Which is updated more often, Echo or Biosmile Edu?

Echo ships an update every 3 months, and Biosmile Edu every 2 weeks. Most recently, Echo was updated on September 28, 2026 and Biosmile Edu on October 7, 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.*