Polyphasic Sleep vs OS3
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Polyphasic Sleep
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.
- 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.)
Read full descriptionHide full description
PolyNap helps you choose, follow, and adapt to a polyphasic sleep schedule without guesswork. Get a personalized recommendation, plan every sleep block with clarity, wake up on time with smart alarms, and track your progress over time. Whether you're exploring Everyman, Uberman, Biphasic, segmented sleep, or a siesta routine, PolyNap gives you the structure you need to stay consistent. With PolyNap, you can: - Get a personalized sleep schedule based on your goals, routine, and sleep experience - Explore multiple polyphasic sleep schedules and compare total sleep time - Follow clear core sleep and nap blocks throughout your day - Use smart alarms and nap reminders to stay on time - Track adaptation, consistency, adherence, and time gained - Stay motivated with Nimmy, progress milestones, and routine-building feedback PolyNap is built for people who want more control over their time, a more intentional sleep routine, and a more practical way to approach polyphasic sleep. If you want a sleep app that does more than passive tracking, PolyNap helps you actually build and maintain a schedule.
OS3
Read full descriptionHide full description
OS3 is a voice assistant built for Apple Watch. Talk to it like you would a friend, no tapping, no typing, just your voice. How it works: 1. Raise your wrist and start talking. OS3 listens, thinks, and responds out loud entirely hands-free. 2. Conversations feel natural with real-time voice powered by Google's Gemini AI. 3. Live captions appear on screen as you speak and as OS3 responds. Features: 1. Voice first interaction designed for the small screen, concise answers, no clutter. 2. Conversation history: revisit past conversations and pick up where you left off. 3. A visual orb that animates as OS3 listens and speaks. 4. iOS companion app for managing your account, viewing usage, and subscription details. 5. Sign in with Apple for quick, private authentication. OS3 requires an active internet connection on Apple Watch. An iPhone with the companion app installed is needed for account setup. Terms of Use: https://os3.app/terms/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Polyphasic Sleep | OS3 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 66 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | SALIM TANER CELIK | QR LLC |
In-app purchases
Polyphasic Sleep
- PolyNap Premium Weekly$4.997 Days
- PolyNap Premium Monthly3 Days trial$8.991 Month
- Premium Annual Discount$24.991 Year
Show 1 moreShow fewer
- PolyNap Premium Yearly3 Days trial$34.991 Year
- PolyNap Premium Lifetime$99.99
OS3
- OS3 Pro$12.991 Month
