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Fitness · head to head

Eight Sleep vs Sleep Cycle

Eight Sleep logo

Eight Sleep

Fitness

The sleep fitness company

From
$19/month
Rated
-
Full reviewWebsite
Sleep Cycle logo

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
-
Full reviewWebsite

The short version

  • Only Sleep Cycle has a free tier, so it costs nothing to try first.
  • Each has a real cost: Eight Sleep mandatory monthly subscription ($17-$33) required for core features; 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: Eight Sleep covers Dynamic temperature control, 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 Eight Sleep and Sleep Cycle actually diverge.

Attributes where Eight Sleep and Sleep Cycle differ
AttributeEight SleepSleep Cycle
Starting price$19/monthFree
Pricing modelsubscriptionFree with a Premium subscription
Free tierNoYes
PlatformsHardware, iOS, AndroidiOS, Android
Founded2014Unknown

Identical on both: 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 Eight Sleep

  • Dynamic temperature control
  • Sleep tracking
  • HRV monitoring
  • Gentle wake alarm
  • Dual zone temperature
  • Apple Health
  • Google Fit
  • WHOOP

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.

Eight Sleep

  • 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 Eight Sleep
  • A person who struggles with grogginess from alarms and wants to be woken during a light sleep window insteadnot Eight Sleep
  • Someone who wants to check whether they snore or talk in their sleep, which requires the Premium subscriptionnot Eight Sleep
  • A buyer comparing upfront cost against Oura or a smartwatch before deciding whether hardware-free tracking is good enoughnot Eight Sleep

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Eight Sleep

  • Mandatory monthly subscription ($17-$33) required for core features
  • Premium pricing starts at $2,999 for mattress cover alone
  • Pod Pro mattress rated as too firm for side sleepers with delicate pressure points
  • Edge support weakness with minimal perimeter reinforcement
  • Limited to Queen and Full sizes only

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

Eight Sleep

$19/month
  • Autopilot$19/month
    • Auto temperature
    • Sleep reports
    • Health insights

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 Eight Sleep if

  • You need dynamic temperature control.
  • You work on Hardware, iOS, Android.
  • You also want sleep tracking.
Eight Sleep review

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.
Sleep Cycle review

Questions people ask

Is Eight Sleep or Sleep Cycle better?
Neither clearly leads. Eight Sleep starts at $19/month and Sleep Cycle at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Eight Sleep or Sleep Cycle?
Sleep Cycle has a free tier; the other does not. Paid plans start at $19/month for Eight Sleep and Free for Sleep Cycle.
Does Eight Sleep or Sleep Cycle run on more platforms?
Eight Sleep runs on Hardware, iOS, Android. Sleep Cycle runs on iOS, Android.
Can I use Sleep Cycle for free?
Yes. Sleep Cycle has a free tier, so you can try it without paying. Eight Sleep starts at $19/month.
What is Eight Sleep best used for?
Eight Sleep 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 Eight Sleep do that Sleep Cycle cannot?
Eight Sleep covers Dynamic temperature control, Sleep tracking, HRV monitoring, Gentle wake alarm. Sleep Cycle covers Sound and motion sleep analysis, Smart alarm, Sleep quality trends, Snore and sleep talk recording.

Answered from the vendors’ own pages

Eight Sleep: What is the temperature control range of Eight Sleep?

Eight Sleep Pod offers independent temperature adjustment on each side of the bed, with a range of 55 to 110 degrees Fahrenheit. Each side can be controlled separately, allowing couples to have different preferences.

Source
Sleep 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.

Eight Sleep: Is a subscription required for Eight Sleep Pod?

Yes, Eight Sleep Pod requires a mandatory monthly subscription with three tiers ranging from $17 to $33 per month. The subscription includes access to sleep tracking, autopilot features, and other health analytics.

Source
Sleep 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.

Eight Sleep: What are the available sizes for Eight Sleep?

Eight Sleep Pod is available only in Full and Queen sizes. Half-size options are not available, which may limit options for smaller beds.

Source
Sleep 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.

Eight Sleep: What wearables does Eight Sleep integrate with?

Eight Sleep integrates with 40+ wearables through its Terra API partnership, including Apple Watch, Fitbit, Garmin, Oura, WHOOP, and syncs with Apple Health and Google Fit.

Source
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