# Physicum vs Sleep Log

The clearest difference is in-app purchases: Physicum at none against Sleep Log's 4. Physicum also leads on iOS requirement (15.0 vs 17.0). Sleep Log's advantage is update cadence (every 2 months vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. Sleep Log sells 4 in-app purchases, starting at $0.99 per 7 days. Physicum asks for nothing beyond the download.

Physicum ships an update every 8 months, Sleep Log every 2 months. The most recent releases landed on October 11, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Physicum | Sleep Log |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Size | 15 MB | 8 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Trainin](https://appshunter.io/developer/1732652497) | [Vasilii Polovnikov](https://appshunter.io/developer/1716165883) |

## What reviewers say

### Physicum

[App page](https://appshunter.io/ios/app/physicum/id6736932103)

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

**In-app purchases:** none


### Sleep Log

[App page](https://appshunter.io/ios/app/sleep-log-hours-and-quality/id6772567912)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium · 1 week | $0.99 | per 7 days |
| Premium · 1 month | $1.99 | per month |
| Premium · 1 year | $9.99 | per year |
| Premium · Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Physicum free?

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

### Is Sleep Log free?

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

### Do Physicum or Sleep Log have ads?

Neither Physicum nor Sleep Log shows ads.

### Which is updated more often, Physicum or Sleep Log?

Physicum ships an update every 8 months, and Sleep Log every 2 months. Most recently, Physicum was updated on October 11, 2026 and Sleep Log on October 21, 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.*