# Polyphasic Sleep vs OS3

The clearest difference is update cadence: Polyphasic Sleep at weekly against OS3's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Polyphasic Sleep sells 5 in-app purchases, starting at $4.99 per 7 days and OS3 sells 1 in-app purchase, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Polyphasic Sleep ships an update weekly, OS3 monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Polyphasic Sleep | OS3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/polyphasic-sleep-polynap/id6746938552/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Freemium | — |
| Size | 66 MB | 4 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [SALIM TANER CELIK](https://appshunter.io/developer/1799263246) | [QR LLC](https://appshunter.io/developer/1820066581) |

## What reviewers say

### Polyphasic Sleep

[App page](https://appshunter.io/ios/app/polyphasic-sleep-polynap/id6746938552)

This app guides users through adopting and maintaining polyphasic sleep schedules. It offers personalized recommendations, smart alarms, and progress tracking to help users gain more control over their time and build consistent sleep routines.

**Highlights:** Personalized sleep schedule recommendations, Multiple polyphasic sleep schedule exploration, Smart alarms and nap reminders, Progress tracking for adaptation and consistency, Routine-building feedback, Explore various sleep cycles (Everyman, Uberman, etc.)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PolyNap Premium Weekly | $4.99 | per 7 days |
| PolyNap Premium Monthly | $8.99 | per month |
| Premium Annual Discount | $24.99 | per year |
| PolyNap Premium Yearly | $34.99 | per year |
| PolyNap Premium Lifetime | $99.99 | one-time |


### OS3

[App page](https://appshunter.io/ios/app/os3/id6760365662)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OS3 Pro | $12.99 | per month |


## Frequently asked questions

### Is Polyphasic Sleep free?

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

### Is OS3 free?

OS3 is free to download, with in-app purchases available.

### Do Polyphasic Sleep or OS3 have ads?

Neither Polyphasic Sleep nor OS3 shows ads.

### Which is updated more often, Polyphasic Sleep or OS3?

Polyphasic Sleep ships an update weekly, and OS3 monthly. Most recently, Polyphasic Sleep was updated on October 30, 2026 and OS3 on October 31, 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.*