Fitness · head to head
FitNotes vs Sleep Cycle
Sleep Cycle
Fitness
Phone based sleep tracking app that uses the microphone or accelerometer to detect sleep phases and wake you in a light sleep window
- From
- Free
- Rated
- -
The short version
- Each has a real cost: FitNotes android only, no iOS version despite requests from users; Sleep Cycle sleep stage detection is inferred from sound and motion rather than measured with dedicated physiological sensors, so accuracy is lower than a ring or watch based tracker like Oura.
- They diverge on capability: FitNotes covers Exercise logging, Sleep Cycle covers Sound and motion sleep analysis.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which FitNotes and Sleep Cycle actually diverge.
| Attribute | FitNotes | Sleep Cycle |
|---|---|---|
| Pricing model | Unknown | Free with a Premium subscription |
| Platforms | Android | iOS, Android |
| Founded | 2013 | Unknown |
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Fitness).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in FitNotes
- Exercise logging
- Custom exercises
- Progress graphs
- Workout calendar
- Data backup
- Google Drive backup
- Android support
Only in Sleep Cycle
- Sound and motion sleep analysis
- Smart alarm
- Sleep quality trends
- Snore and sleep talk recording
- Sleep aid sounds and stories
- Apple Health and wearable integration
What people use each for
The jobs each tool is most often brought in to do.
FitNotes
- Workout trackingnot Sleep Cycle
- Nutrition managementnot Sleep Cycle
- Health monitoringnot Sleep Cycle
- Fitness coachingnot Sleep Cycle
- Wellness improvementnot Sleep Cycle
Sleep Cycle
- Someone who wants sleep tracking without buying a ring or watch, using a phone they already ownnot FitNotes
- A person who struggles with grogginess from alarms and wants to be woken during a light sleep window insteadnot FitNotes
- Someone who wants to check whether they snore or talk in their sleep, which requires the Premium subscriptionnot FitNotes
- A buyer comparing upfront cost against Oura or a smartwatch before deciding whether hardware-free tracking is good enoughnot FitNotes
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
FitNotes
- Android only, no iOS version despite requests from users
- Limited community features compared to social fitness trackers
- Minimal UI updates compared to more modern fitness apps
Sleep Cycle
- Sleep stage detection is inferred from sound and motion rather than measured with dedicated physiological sensors, so accuracy is lower than a ring or watch based tracker like Oura.
- The app needs to run overnight with the microphone active or the phone on the mattress, which raises its own privacy consideration for anyone uncomfortable with a phone microphone recording an entire room overnight.
- Most of the features that make the sleep data actionable, detailed trends and snore analysis, are behind the Premium subscription rather than included free.
- Battery drain overnight from continuous microphone or motion sensing is a real practical issue for anyone who also wants to use the phone as a normal alarm without charging it.
- Detection can be disrupted by a shared bed, a partners movement or snoring, or ambient household noise, all of which reduce accuracy for the primary user.
Pricing, plan by plan
FitNotes
FreeNo published plan breakdown. See the FitNotes review.
Sleep Cycle
Free- Sleep Cycle Premium$39.99/year
- Basic sleep tracking and the smart alarm are free, no hardware required
- Premium unlocks detailed trends, snore recording playback and most sleep sounds
- Annual Premium commonly around $39.99, with a higher effective rate if billed monthly
Which should you pick?
Choose FitNotes if
- You need exercise logging.
- You want to start without paying.
- You work on Android.
- You also want custom exercises.
Choose Sleep Cycle if
- You need sound and motion sleep analysis.
- You want to start without paying.
- You work on iOS, Android.
- You also want smart alarm.
Questions people ask
- Is FitNotes or Sleep Cycle better?
- Neither clearly leads. FitNotes starts at Free and Sleep Cycle at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, FitNotes or Sleep Cycle?
- FitNotes starts at Free and Sleep Cycle at Free.
- Does FitNotes or Sleep Cycle run on more platforms?
- FitNotes runs on Android. Sleep Cycle runs on iOS, Android.
- Can I use FitNotes for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is FitNotes best used for?
- FitNotes is most often used for workout tracking, nutrition management, health monitoring, fitness coaching. Of those, workout tracking and nutrition management are not what Sleep Cycle is typically brought in for.
- What can FitNotes do that Sleep Cycle cannot?
- FitNotes covers Exercise logging, Custom exercises, Progress graphs, Workout calendar. Sleep Cycle covers Sound and motion sleep analysis, Smart alarm, Sleep quality trends, Snore and sleep talk recording.
Answered from the vendors’ own pages
FitNotes: Is FitNotes free and does it have ads?
FitNotes is completely free with no ads and no paid tier. The developer offers a FitNotes Supporter app as optional support.
SourceSleep Cycle: Do I need to buy any hardware for Sleep Cycle?
No. It uses your phones microphone or accelerometer, placed on the nightstand or mattress, with no separate device to buy.
FitNotes: Does FitNotes work offline?
Yes, FitNotes works completely offline and requires no internet connection or account sign-up to use.
SourceSleep Cycle: Is Sleep Cycle free?
Basic tracking and the smart alarm are free. Detailed trends, snore recording and most sleep sounds require Sleep Cycle Premium.
FitNotes: What platform is FitNotes available on?
FitNotes is Android only and is not available on iOS or other platforms.
SourceSleep Cycle: How accurate is phone based sleep tracking compared with a ring or watch?
Less accurate, since it infers sleep stages from sound and motion rather than measuring heart rate or temperature directly, which dedicated wearables like Oura do.
FitNotes: Can I export my FitNotes data?
Yes, FitNotes allows full CSV export so your workout data is yours and can be imported into other applications.
SourceRelated pages
More on Sleep Cycle
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- Sleep Cycle vs Lose It!
- Sleep Cycle vs MacroFactor
- Sleep Cycle vs Nike Run Club
- Sleep Cycle vs Cronometer
- Sleep Cycle vs SugarWOD
- Sleep Cycle vs StrongLifts
- Sleep Cycle vs TrainHeroic
- Sleep Cycle vs Future
- Sleep Cycle vs WW (WeightWatchers)
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- Sleep Cycle vs Eight Sleep
- Sleep Cycle vs Fitbod
- Sleep Cycle vs Hydrow
- Sleep Cycle vs Nike Training Club
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- Sleep Cycle vs Oura Ring
- Sleep Cycle vs Centr
- Sleep Cycle vs WellnessLiving
- Sleep Cycle vs Zwift
- Sleep Cycle vs TrainerRoad
- Sleep Cycle vs Tonal
- Sleep Cycle vs Noom
- Sleep Cycle vs Freeletics
- Sleep Cycle vs Tempo