Comparison

AcornSleep vs Sleepillow

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

AcornSleep

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Welcome to AcornSleep, a custom R90 sleep cycle recording tool based on Sleep by Nick Ritterhales, a better way to improve sleep and redefine rest. 8 hours is actually the average sleep time per person per night, but it is not a generally applicable recommended sleep time. Blindly chasing 8 hours and creating a lot of pressure has a very destructive and counterproductive effect on sleep. We need different sleep hours from person to person. No supplements, new mattresses or equipment are required. All it takes is your smartphone, plus our AI-powered software to work with you to come up with customized tips and recommendations to personalize your sleep journey for better rest. 4 Reasons You'll Love Sleep Cycle. 1. Total Privacy - AutoSleep has no user analytics tracking, No third-party code, No data uploaded. 2. Abundant Customization Tips - A large number of rest suggestions customized for you based on your sleep cycle registration information, daily schedule and mobile phone usage frequency. 3. No additional equipment - Just turn on your phone every morning and record how you slept last night, the AI assistant will provide you with customized advice. 4. More Ambient Noise for Sleep - Ability to make your own personal mix of sounds so you get just the right amount of ambient noise. A good night's sleep isn't always easy to find, but it's the key to many things in your life. Stop mistreating yourself and those around you. Stop accepting the fatigue and lack of energy you've been feeling. Use AcornSleep to achieve the calm you need. Whatever you're doing right now, I want you to imagine the two of us on that island, trying to keep in sync with that biological process that's been around since the dawn of man. This is our ideal life. Every step we takeβ€”however smallβ€”to improve our sleep should bring us closer to the kind of life we’re sitting around the campfire. - Please do not rely on AcornSleep for medical advice or diagnosis. AcornSleep is not intended to replace or replace professional medical care. - If you have any medical problems, or before starting any exercise program, please consult your physician. Do not adjust your medicines yourself.

About

Sleepillow

Features
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In order to promote sleep quality and mental health of the teenagers, Levelmind@JC cooperates with Hong Kong Playground Association to promote Sleepillow. Through this newly developed app, you can learn more about the sleep hygiene; use various means to reduce stress; record your sleeping time, and listen to emotion-calming audio. Sleepillow features: - Mindfulnesspractice audio - White noice player - Self-custermise playlist for sleeping - Sleepillow can be used in conjunction with Apple Health to synchronize and record your sleep in the sleep diary We will connect with HealthKit's sleep data. If you choose 'Allow,' we will use your sleep data in the app to display your sleep patterns. If you choose 'Don't Allow,' you won't be able to use this feature within the app.

Screenshots

AcornSleep4 screens
Sleepillow4 screens

Verdict

The call

The clearest difference is update cadence: AcornSleep at every 10 days against Sleepillow's every 8 months. On price, ads, in-app purchases and device support 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

AcornSleep ships an update every 10 days, Sleepillow every 8 months. The most recent releases landed on October 27, 2026 and November 3, 2026 respectively.

Scorecard1 real difference Β· 5 level
AcornSleep versus Sleepillow: the parameters behind the verdict, then further details
ParameterAcornSleepSleepillow
PriceFreeFree
Update frequencyEvery 10 days β€” betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.011.0 β€” better
Further details β€” not scored
Size78 MB135 MB
Age rating4+4+
DeveloperCanoe LLCHong Kong Playground Association

In-app purchases

None

AcornSleep

No in-app purchases

None

Sleepillow

No in-app purchases

Questions

Is AcornSleep free?
AcornSleep is free to download, with no in-app purchases.
Is Sleepillow free?
Sleepillow is free to download, with no in-app purchases.
Do AcornSleep or Sleepillow have ads?
Neither AcornSleep nor Sleepillow shows ads.
Which is updated more often, AcornSleep or Sleepillow?
AcornSleep ships an update every 10 days, and Sleepillow every 8 months. Most recently, AcornSleep was updated on October 27, 2026 and Sleepillow on November 3, 2026.

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