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Education · head to head

Memrise vs Sleep Cycle

Memrise logo

Memrise

Education

Vocabulary and spaced repetition language app built around video clips of native speakers

From
Free
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

  • Each has a real cost: Memrise the free tier caps daily reviews tightly enough that consistent vocabulary building in practice requires the Pro subscription.; 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: Memrise covers Spaced repetition flashcards, 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 Memrise and Sleep Cycle actually diverge.

Attributes where Memrise and Sleep Cycle differ
AttributeMemriseSleep Cycle
Pricing modelFree with a Pro subscriptionFree with a Premium subscription
PlatformsiOS, Android, WebiOS, Android
CategoryEducationFitness

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

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 Memrise

  • Spaced repetition flashcards
  • Learn with Locals videos
  • Official courses
  • Speaking practice
  • Offline mode
  • Grammar bot

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.

Memrise

  • A learner who wants vocabulary tied to real spoken usage through native speaker video rather than only text flashcardsnot Sleep Cycle
  • Someone using a grammar-focused course elsewhere and wanting Memrise purely for vocabulary retentionnot Sleep Cycle
  • A traveller wanting practical phrase recognition for a specific trip rather than formal fluencynot Sleep Cycle
  • A learner comparing subscription convenience against building free custom decks in Ankinot Sleep Cycle

Sleep Cycle

  • Someone who wants sleep tracking without buying a ring or watch, using a phone they already ownnot Memrise
  • A person who struggles with grogginess from alarms and wants to be woken during a light sleep window insteadnot Memrise
  • Someone who wants to check whether they snore or talk in their sleep, which requires the Premium subscriptionnot Memrise
  • A buyer comparing upfront cost against Oura or a smartwatch before deciding whether hardware-free tracking is good enoughnot Memrise

Where each one falls short

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

Memrise

  • The free tier caps daily reviews tightly enough that consistent vocabulary building in practice requires the Pro subscription.
  • Memrise phased out much of its earlier community-created course library in favour of official courses, so learners who relied on community decks for less common languages lost access to that content.
  • It teaches vocabulary and set phrases well but offers comparatively thin grammar instruction, so it works best as a companion to a grammar-focused course rather than a standalone method.
  • Language coverage for the flagship Learn with Locals video feature and speaking practice is uneven, concentrated in a handful of popular languages.
  • Unlike Anki, the spaced repetition algorithm and content are closed and cannot be customised or exported, so a learner cannot take their review data to another tool.

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

Memrise

Free
  • Memrise Pro$8.99/month
    • Free tier allows basic vocabulary practice with daily limits and ads
    • Pro unlocks Learn with Locals videos, full official courses and offline mode
    • Annual Pro plans typically run $69.99 to $89.99, cheaper per month than monthly billing

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 Memrise if

  • You need spaced repetition flashcards.
  • You want to start without paying.
  • You work on iOS, Android, Web.
  • You also want learn with locals videos.
Memrise 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 Memrise or Sleep Cycle better?
Neither clearly leads. Memrise 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, Memrise or Sleep Cycle?
Memrise starts at Free and Sleep Cycle at Free.
Does Memrise or Sleep Cycle run on more platforms?
Memrise runs on iOS, Android, Web. Sleep Cycle runs on iOS, Android.
Can I use Memrise for free?
Both have a free tier, so you can try either at no cost before committing.
What is Memrise best used for?
Memrise is most often used for a learner who wants vocabulary tied to real spoken usage through native speaker video rather than only text flashcards, someone using a grammar-focused course elsewhere and wanting memrise purely for vocabulary retention, a traveller wanting practical phrase recognition for a specific trip rather than formal fluency, a learner comparing subscription convenience against building free custom decks in anki. Of those, a learner who wants vocabulary tied to real spoken usage through native speaker video rather than only text flashcards and someone using a grammar-focused course elsewhere and wanting memrise purely for vocabulary retention are not what Sleep Cycle is typically brought in for.
What can Memrise do that Sleep Cycle cannot?
Memrise covers Spaced repetition flashcards, Learn with Locals videos, Official courses, Speaking practice. Sleep Cycle covers Sound and motion sleep analysis, Smart alarm, Sleep quality trends, Snore and sleep talk recording.

Answered from the vendors’ own pages

Memrise: Is Memrise free?

A limited amount of vocabulary practice is free with daily caps and ads. Learn with Locals videos, full courses and offline mode require Memrise Pro.

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.

Memrise: What is Learn with Locals?

Short video clips of native speakers using vocabulary and phrases in real settings, intended to show how language is actually spoken rather than textbook delivery.

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.

Memrise: Can I still use community-created courses?

Memrise moved away from most of its earlier community course library toward its own official courses, so availability of community content is now limited.

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.

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