# Echo ASD vs Sleep Lab

The clearest difference is in-app purchases: Echo ASD at none against Sleep Lab's 2. Echo ASD also leads on update cadence (every 6 weeks vs every 9 months) and iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Sleep Lab sells 2 in-app purchases, starting at $1.99 per month. Echo ASD asks for nothing beyond the download.

Echo ASD ships an update every 6 weeks, Sleep Lab every 9 months. The most recent releases landed on September 14, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Echo ASD | Sleep Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 9 months |
| Size | 26 MB | 49 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Autism Solutions Inc](https://appshunter.io/developer/1723540997) | [Saurabh Khare](https://appshunter.io/developer/417606407) |

## What reviewers say

### Echo ASD

[App page](https://appshunter.io/ios/app/echo-asd/id6475177923)

**In-app purchases:** none


### Sleep Lab

[App page](https://appshunter.io/ios/app/sleep-lab/id6756171578)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sleep Lab Monthly Subscriptions | $1.99 | per month |
| Sleep Lab Yearly Subscriptions | $9.99 | per year |


## Frequently asked questions

### Is Echo ASD free?

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

### Is Sleep Lab free?

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

### Do Echo ASD or Sleep Lab have ads?

Neither Echo ASD nor Sleep Lab shows ads.

### Which is updated more often, Echo ASD or Sleep Lab?

Echo ASD ships an update every 6 weeks, and Sleep Lab every 9 months. Most recently, Echo ASD was updated on September 14, 2026 and Sleep Lab on September 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*