R90 sleep assistant vs StepDeck
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
R90 sleep assistant
This app helps you manage your sleep cycle using the scientifically-backed R90 method. It calculates your optimal sleep schedule based on natural biological rhythms to improve sleep quality by focusing on completing 90-minute cycles.
- Calculate optimal sleep schedule
- Track completed sleep cycles
- Record sleep patterns automatically
- Smart bedtime and wake time calculations
- Weekly cycle goal tracking
- Integrates with HealthKit
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Still worrying about your sleep quality? Try the R90 sleep method to transform your sleep. The R90 sleep method, developed by the Premier League Manchester United's sports sleep coach, is designed according to the human body's natural biological rhythms. This scientifically-backed solution helps eliminate external and internal distractions, allowing you to follow your body's natural patterns and achieve better sleep. Human sleep consists of two types: REM sleep (light sleep) and non-REM sleep (deep sleep). These alternate in approximately 90-minute cycles. Sleep quality isn't measured by absolute duration, but by completing full 90-minute cycles. The optimal R90 sleep pattern is 35 cycles per week. For example, if you typically sleep from 12:00 AM to 7:30 AM, you complete exactly 5 cycles. But if you stay up until 1:00 AM and still wake at 7:30 AM, you'll be in deep sleep when your alarm goes off. Forcing yourself awake doesn't eliminate fatigueβit actually harms your body. According to R90 principles, you should adjust to sleep at 1:30 AM for exactly 4 cycles. This app helps you calculate and follow the R90 method, providing timely reminders and tracking your weekly sleep cycles. Key Features: - Record your sleep patterns automatically - Track completed sleep cycles each week - Plan your optimal sleep schedule - Smart bedtime and wake time calculations - Weekly cycle goal tracking (35 cycles per week) NEW IN 2.1 β’ Sleep now mode: go to bed now and instantly see the best times to wake up, with one-tap wake-up reminders β’ Fall-asleep buffer for more accurate bedtimes β’ Home Screen and Lock Screen widget showing tonight's bedtime β’ Now in Japanese, Korean, German, French, Spanish and Traditional Chinese Pro Tip:A 30-minute or 90-minute nap at noon also counts as a complete cycle. Note: This app integrates with HealthKit to read and write sleep data. Permission is required for optimal functionality.
StepDeck
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StepDeck turns your daily steps into a card collecting adventure. Powered by Apple Health, every 1000 steps you take earns card packs filled with unique artwork, glowing effects, and cards ranging from Common to Legendary. WALK. EARN. COLLECT. Every 1000 steps earns a Standard Pack with 5 cards. Hit 10000 steps in a day to unlock a Daily 10k Pack β 6 cards with significantly better rarity odds. The more you move, the more powerful your collection becomes. FOUR RARITIES. ONE HOLY GRAIL. β’ Common β your everyday pick-up β’ Rare β a solid find β’ Epic β a serious pull β’ Legendary β the one you're chasing Epic and Legendary cards have a 10% chance to appear as shiny Foil variants, treated as separate collectibles in your deck. THREE CARD SERIES The Run Series features comic-style action cards inspired by the runner's spirit. The exclusive Glacier Series takes things further with icy, limited artwork not found in standard packs β including Foil Epics and Legendaries baked directly into the drop pool. And the all-new Art Series brings artistic cards with a look unlike anything else in your collection.
Screenshots
Verdict
The clearest difference is in-app purchases: StepDeck at none against R90 sleep assistant's 1. StepDeck also leads on update cadence (every 5 days vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. R90 sleep assistant sells 1 one-off in-app purchase. StepDeck asks for nothing beyond the download.
R90 sleep assistant ships an update every 4 months, StepDeck every 5 days. The most recent releases landed on October 26, 2026 and October 13, 2026 respectively.
| Parameter | R90 sleep assistant | StepDeck |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | β |
| Update frequency | Every 4 months | Every 5 days β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Monetization | Free with in-app purchases | β |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 β better | 17.6 |
| Further details β not scored | ||
| Size | 2 MB | 692 MB |
| Age rating | 4+ | 4+ |
| Developer | ι³ ε | Marcel Brueck |
In-app purchases
R90 sleep assistant
- Fully unlocked$1.99
StepDeck
No in-app purchases
Questions
Is R90 sleep assistant free?
Is StepDeck free?
Do R90 sleep assistant or StepDeck have ads?
Which is updated more often, R90 sleep assistant or StepDeck?
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