# SleepSats vs Dopamine Lock

The clearest difference is ads: SleepSats at none against Dopamine Lock's shown. SleepSats also leads on device support (3 vs 1). Dopamine Lock's advantage is update cadence (every 2 days vs every 10 days). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. SleepSats sells 2 in-app purchases, starting at $7.99 per month and Dopamine Lock sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

SleepSats ships an update every 10 days, Dopamine Lock every 2 days. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | SleepSats | Dopamine Lock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 2 days** |
| Size | 95 MB | 106 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Bula Media Ltd](https://appshunter.io/developer/1296621327) | [Tristan Manchester](https://appshunter.io/developer/1841242335) |

## What reviewers say

### SleepSats

[App page](https://appshunter.io/ios/app/sleepsats/id6761456736)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sleepsats Monthly Pro | $7.99 | per month |
| Sleepsats Pro Yearly | $89.99 | per year |


### Dopamine Lock

[App page](https://appshunter.io/ios/app/dopamine-lock-screen-time/id6772157665)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dopamine Lock Pro Weekly | $1.99 | per 7 days |
| Dopamine Lock Pro Monthly | $12.99 | per month |
| Dopamine Lock Pro Yearly | $24.99 | per year |


## Frequently asked questions

### Is SleepSats free?

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

### Is Dopamine Lock free?

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

### Do SleepSats or Dopamine Lock have ads?

Dopamine Lock shows ads; SleepSats does not.

### Which is updated more often, SleepSats or Dopamine Lock?

SleepSats ships an update every 10 days, and Dopamine Lock every 2 days. Most recently, SleepSats was updated on October 9, 2026 and Dopamine Lock 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.*