Sleep Cycle vs Stardust: which one should you pick?
Two sleep & rest tools, side by side. We compare pricing, features, ratings, and target users so you don't have to read two separate reviews.

Sleep Cycle
Sleep & Rest
Sleep tracking with smart alarms and sound analysis

Quick verdict: Sleep Cycle wins for users prioritizing higher user ratings
Sleep Cycle rates higher (4.5 vs unrated).
Sleep Cycle
Stardust
Pricing
Freemium
Pricing
Freemium
Category
Sleep & Rest
Category
Healthy Habits
Platform
ios, android
Platform
ios, android
Best for
Sleep tracking with smart alarms and sound analysis
Best for
Track cycles synced with moon phases
Sleep Cycle features
- Smart alarm
- Track sleep cycles automatically
- Sleep score measures duration and stages
- Sleep tracking
- Wake up gently during light sleep
- Smart alarm wakes during light sleep
- Sleep score
- Sleep stages detail light, deep, dream sleep
- View detailed sleep statistics
- Snore detection
- Set smart alarm clock
- Sleep sounds for nighttime exploration
- Sleep sounds
- Analyze sleep quality trends
- Guided sleep aid with fade-out
- Sleep aid
- Receive sleep insights and tips
- Sleep insights with expert masterclass
- Long-term trends
- Free online classes for healthy habits
- Apple Health integration
Stardust features
- View galaxy-themed interface
- Track menstrual cycles
- Receive hormonal health insights
- Sync with lunar cycles
- Understand cycle-celestial correlations
- Galaxy-themed visual interface
- Hormonal health insights
- Cycle and moon correlation
- Data encryption and privacy
- Period and ovulation tracking
Use cases side by side
Sleep Cycle
- •A user places their phone on the nightstand, sets a smart alarm for 7:30 AM with a 30-minute window, and wakes gently at 7:12 AM during light sleep. They feel noticeably less groggy compared to waki ng with a traditional alarm and review the nightly graph showing 1 hour 45 minutes of deep sleep.
- •Track sleep quality nightly
- •Track sleep patterns
- •A person reviews two weeks of sleep data and notices that nights with ca ffeine after 3 PM consistently correlate with lower sleep scores and more frequent awakenings. They adjust their caffeine cut off time and see their average sleep score improve from 72 to 84 over the next week.
- •Wake up gently and refreshed
- •Wake up refreshed
- •A couple uses Sleep Cycle to track snoring patterns. The app records and timestamps snoring episodes, revealing that snoring peaks during deep sleep phases and increases after alcohol consumption. T his data helps them decide to consult a sleep specialist.
- •Understand sleep stage impacts
- •Improve sleep quality
- •Improve sleep habits with guidance
- •Monitor sleep duration
- •Access expert sleep advice
- •Understand sleep habits
- •Use calming sounds for rest
Stardust
- •Menstrual cycle tracking
- •Track menstrual cycles
- •Lunar cycle synchronization
- •Sync with lunar phases
- •Hormonal health monitoring
- •Monitor hormonal health
- •Cycle pattern analysis
- •Visualize cycle data
- •Personal data privacy
- •Understand celestial correlations
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