Polyphasic Sleep Tracker vs NIX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Polyphasic Sleep Tracker
This app helps you master polyphasic sleep schedules to optimize your waking hours. It offers customizable plans, smart reminders, and HealthKit integration to track and adjust your sleep patterns.
- Customizable sleep plans
- Smart sleep reminders
- HealthKit integration
- Dark mode
- Multiple sleep schedule options
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Are you looking to transform your life through a healthier, more optimized sleep schedule? Welcome to Polyphasic, your ultimate guide to polyphasic sleep schedules. This innovative and thoughtfully designed app will serve as your personal sleep coach, assisting you in mastering polyphasic sleep patterns that fit your lifestyle and help you maximize your waking hours. Polyphasic sleep involves breaking up sleep into multiple periods throughout the day. It's an alternative to monophasic sleep, where sleep occurs in one block typically at night. By adopting a polyphasic sleep schedule, some people find they can reduce total sleep time without feeling overly tired. We understand that everyone's sleep needs are unique. That's why our app is flexible and customizable, providing tools and resources to help you adopt the polyphasic sleep schedule that's right for you. Whether you're interested in trying the Everyman, Uberman, or Dymaxion schedules or just looking for a simple siesta, Polyphasic has you covered. Our mission is to make polyphasic sleep accessible and manageable for everyone, regardless of your schedule or lifestyle. Key Features: **HealthKit Integration** Polyphasic integrates seamlessly with Apple's HealthKit, allowing your intended sleep schedule to be overlaid with actual sleep data from devices like the Apple Watch. This feature bridges the gap between your sleep goals and real-world sleep patterns, enabling accurate adjustments to your polyphasic sleep plan. **Customizable Sleep Plans** Choose from pre-set polyphasic sleep schedules or customize your own based on your personal preferences and daily routine. **Smart Reminders** Our smart algorithms give you a heads-up before each sleep session and accounts for the time you need to fall asleep. **Dark Mode** We care about your eyes as much as your sleep. That's why our app comes with a dark mode to reduce eye strain during your nightly use. Polyphasic is more than just an app; it's a lifestyle. It's for the busy entrepreneur who wants to maximize productivity, the artist seeking creative hours, or the student needing more time for studies. Anyone looking to reclaim their time and live more efficiently will find value in Polyphasic. With Polyphasic, your sleep schedule meets real-world application through our seamless integration with Apple's HealthKit. This functionality allows our app to overlay your planned polyphasic sleep schedule with actual sleep data collected from devices like the Apple Watch. This way, you can compare your intended sleep periods with when you're truly sleeping, enabling you to make meaningful adjustments and ensure your polyphasic sleep plan is genuinely working for you. Through this integration, Polyphasic is not just a planning tool, but a real-time, adaptive assistant for your sleep optimization journey. Enjoy the coherence between your sleep goals and your real-world sleep patterns with Polyphasic and HealthKit! Join us on this journey towards better sleep and a more productive life. Download Polyphasic today and wake up to a new world of possibilities! Note: Please consult with a healthcare professional before significantly altering your sleep schedule. Polyphasic sleep schedules may not be suitable for everyone, particularly for those with certain health conditions or those under 18.
NIX
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Your screen time just became a competition. NIX Scoreboard turns putting your phone down into a game you play with friends. Every minute of screen time is priced in tokens (NX). Lowest score wins. And when the day is going badly, Focus mode blocks every app on your phone and takes the score back down. Willpower is unreliable. Being watched works. Screen-time apps built on private self-discipline get deleted in week two. A number your best friend checks does not. You put the phone down for the same reason you show up to the gym when someone is waiting: somebody knows. FOCUS MODE Book 5 to 120 minutes. NIX blocks every app on your phone. Phone, Messages, FaceTime, Maps, and your Always Allowed list stay open. Every focused minute takes 1 NX off today's score. Finish the session and a bonus comes off too. End early and you keep the minutes, not the bonus. Your friends can see that you are focusing, and how long is left. HOW IT WORKS 1. Connect Screen Time. Your iPhone counts the minutes on your device. 2. Sort your apps into categories. Social and games cost more than productivity. 3. Add your friends and race for the lowest score. 4. Bad day? Start a focus session and watch the score drop. WHAT'S ON THE BOARD - A daily scoreboard with your friends. Lowest score takes the day. - Groups for roommates, a team, or a bet, each with its own board and reward. - Medals for the top three, day wins, and streaks for staying on top. - Moments: share a photo of what you did instead of scrolling. - Event races: one-shot competitions for a weekend, a trip, or a bet. - The podium: see who won, every evening. PRIVACY, PLAINLY What leaves your phone is minutes per category and the score they add up to. Not which apps, not what you did in them, not anything on your screen. Screen Time is read on your device and the raw numbers stay there. Focus mode blocks apps on your phone; it never reports what you opened. Connecting Screen Time also turns on Apple's adult website filter on your phone. It runs on your device, and we never see what you browse. It starts counting the day you install it. Free on iPhone. Put the phone down. Take the board.
Screenshots
Verdict
The clearest difference is price: NIX at Free against Polyphasic Sleep Tracker's $2.49. NIX also leads on update cadence (weekly vs every 7 months). On ads, in-app purchases, device support and iOS requirement 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
NIX is free to download; Polyphasic Sleep Tracker costs $2.49 up front. Neither carries in-app purchases, so what you see is what you pay.
Polyphasic Sleep Tracker ships an update every 7 months, NIX weekly. The most recent releases landed on September 28, 2026 and September 30, 2026 respectively.
| Parameter | Polyphasic Sleep Tracker | NIX |
|---|---|---|
| Price | $2.49 | Free — better |
| Rating | 3.6 (5 ratings) — better | — |
| Positive reviews | 62.5% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 7 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 2 MB | 40 MB |
| Age rating | 4+ | 12+ |
| Developer | FiveSheep OU | NIX Development LLC |
In-app purchases
Polyphasic Sleep Tracker
No in-app purchases
NIX
No in-app purchases









