# Slooma vs ZZZ Tracker

The clearest difference is in-app purchases: ZZZ Tracker at none against Slooma's 3. ZZZ Tracker also leads on update cadence (every 3 weeks vs every 3 months) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Slooma sells 3 in-app purchases, starting at $0.29 per month. ZZZ Tracker asks for nothing beyond the download.

Slooma ships an update every 3 months, ZZZ Tracker every 3 weeks. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Slooma | ZZZ Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 70 MB | 29 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Furkan Ataman](https://appshunter.io/developer/1645559742) | [Luc Pham Van](https://appshunter.io/developer/1544588097) |

## What reviewers say

### Slooma

[App page](https://appshunter.io/ios/app/slooma-sleep-tracker/id6763732609)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Slooma Pro Monthly | $0.29 | per month |
| Slooma Pro Yearly | $1.99 | per year |
| Slooma Pro Lifetime | $4.99 | one-time |


### ZZZ Tracker

[App page](https://appshunter.io/ios/app/zzz-tracker/id6778461481)

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

**In-app purchases:** none


## Frequently asked questions

### Is Slooma free?

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

### Is ZZZ Tracker free?

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

### Do Slooma or ZZZ Tracker have ads?

Neither Slooma nor ZZZ Tracker shows ads.

### Which is updated more often, Slooma or ZZZ Tracker?

Slooma ships an update every 3 months, and ZZZ Tracker every 3 weeks. Most recently, Slooma was updated on October 12, 2026 and ZZZ Tracker on October 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.*