Comparison

Sleep Brain vs HIIT

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

Head to head
About

Sleep Brain

This app helps you improve sleep quality and reduce stress through advanced tracking, tailored meditation programs, and soothing sounds. It provides detailed reports on your sleep patterns and offers insights into achieving better rest and overall well-being.

Highlights
  • Comprehensive sleep tracking
  • Tailored meditation programs
  • Stress relief with soothing sounds
  • Detailed sleep reports
  • Mindfulness and calm philosophy guidance
Features
Read full description

Welcome to Sleep Brain, your ultimate companion for achieving optimal sleep and stress relief! Are you constantly fatigued, struggling to attain quality sleep, or perturbed by persistent snoring issues? Look no further – Sleep Brain combines the profound wisdom of ancient practices with cutting-edge techniques to rejuvenate your sleep and improve your overall well-being. Key Features: Comprehensive Sleep Tracking: Gain valuable insights into your sleep patterns and uncover potential health risks with our advanced sleep monitoring technology. From identifying sleep apnea and snoring episodes to addressing insomnia and other common sleep disturbances, Sleep Brain offers personalized solutions tailored to your unique needs. Tailored Meditation Programs: Immerse yourself in a personalized meditation experience designed to promote relaxation, inner peace, and restorative sleep. Our expertly crafted meditation programs combine controlled breathwork, mindfulness techniques, and soothing music therapy to alleviate stress, anxiety, and tension, helping you achieve a state of profound relaxation and tranquility. Stress Relief with Soothing Sounds: Indulge in a blissful auditory journey with our collection of soothing sleep sounds, carefully curated to lull you into a state of deep relaxation and tranquility. From gentle raindrops and ocean waves to calming nature sounds and tranquil melodies, Sleep Brain offers a diverse range of audio experiences to soothe your mind, body, and soul. Detailed Sleep Reports: Unlock the secrets of your sleep with comprehensive sleep reports that analyze your sleep quality, duration, efficiency, and effectiveness. Our detailed insights provide valuable information to help you identify areas for improvement and optimize your sleep environment for improved rest. Embrace the Clam Life: Immerse yourself in the wisdom of calm philosophy and embrace a holistic approach to health and well-being. Discover the transformative power of mindfulness practices, ancient meditation techniques, and mindful living principles to cultivate inner harmony, balance, and vitality in your daily life. Who It's For: Sleep Brain caters to a diverse range of individuals, including: Individuals struggling with insomnia or poor sleep quality Meditation enthusiasts seeking inner peace and tranquility Professionals dealing with high levels of stress and anxiety Students striving to enhance focus, concentration, and academic performance Those intrigued by sleep phenomena and interested in optimizing their sleep health and well-being Experience the transformative power of Sleep Brain and embark on a journey towards better sleep, inner peace, and holistic well-being. Download Sleep Brain now and unlock the secrets to a healthier, happier life! Premium Information: Sleep Brain offers flexible subscription options to suit your needs: Weekly Premium:$9.99 Monthly Premium:$19.99 Yearly Premium:$89.99 (Buy one Get one FREE) Six Months Premium:$29.99 These prices are for US customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. The subscription will automatically renew unless turned off in your iTunes Account Settings at least 24 hours before the current period ends. You can go to your ITunes Account settings to manage your subscription and turn off auto renew. Your iTunes Account will be charged when the purchase is confirmed. Read the terms and conditions here: https://goss.shaolinzen.com/web/agreement/privacyPolicy.html Read the privacy policy here: https://goss.shaolinzen.com/web/agreement/termsOfService.html

About

HIIT

Design and track custom interval running workouts with real-time data and audio cues. This app offers detailed post-run analysis and integrates with Apple Health and Apple Watch for phone-free training.

Highlights
  • Customizable intervals (time, distance, open)
  • Support for HIIT, tempo, fartlek, pyramid, progression workouts
  • Real-time tracking of pace, cadence, heart rate
  • Audio cues for guidance
  • Phone-free Apple Watch operation
  • Post-run analysis and GPX export
  • Apple Health integration
Features
Read full description

Tired of tapping through menus before a run? Interval Running is a simple HIIT, tabata, and interval timer - say what you want, it builds the intervals, you run. Just tell it what you want. Say something like "eight rounds, 30 seconds fast, 30 seconds easy" and the timer builds your program right then - no forms, no menus, no fields to fill in before you can start running. Prefer to build it yourself? You can: - Set work and rest by time, distance, or leave it open - Choose HIIT, tabata, fartlek, tempo, or plain run/walk intervals - Save a routine once, reuse it whenever you want Everything you need is on the screen while you run, no extra taps. - Interval, pace, cadence, and heart rate at a glance - Audio cues tell you when to switch, no need to look down - Full Apple Watch support - leave your phone at home You don't want a training plan, a coach, or a program - you want a timer that starts and stops intervals exactly when you tell it to. You want to set up a workout on the way to the track without stopping to tap through screens. You do tabata or HIIT sessions and just need something that counts rounds. You run intervals on your own terms and don't want an app deciding your pace for you. After each run, see your intervals, pace, and heart rate. Export GPX files, sync with Apple Health, and connect an external heart rate monitor if you use one. Health app integration With your permission, your interval runs count toward Activity Rings, including the Exercise and Move rings. Say it. Start it. Run. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Sleep Brain4 screens
HIIT4 screens

Verdict

The call

The clearest difference is rating: HIIT at 4.3 against Sleep Brain's 3.5. HIIT also leads on ads (none vs shown) and ratings volume (34 vs 11). Sleep Brain's advantage is review sentiment (91% vs 57%) and iOS requirement (13.0 vs 17.0). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sleep Brain sells 17 in-app purchases, starting at $6.90 per 7 days and HIIT sells 8 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

HIIT holds the better App Store score, 4.3 against 3.5. Both are backed by a comparable volume of ratings — 11 and 34 respectively. Written reviews complicate that: 91% of Sleep Brain's written reviews are positive against 57% of HIIT's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Sleep Brain ships an update every 11 days, HIIT every 2 weeks. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

Scorecard5 real differences · 5 level
Sleep Brain versus HIIT: the parameters behind the verdict, then further details
ParameterSleep BrainHIIT
PriceFreeFree
Rating3.5 (11 ratings)4.3 (34 ratings) — better
Positive reviews90.9% of reviews — better57.1% of reviews
Number of ratings1134 — better
Update frequencyEvery 11 days — betterEvery 2 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS13.0 — better17.0
Further details — not scored
Size235 MB83 MB
Age rating4+4+
DeveloperHuanxiu Technology (Shanghai) Co., Ltd.Maxim Kazakov

Customer experience

Sleep Brain

All ratings11 ratings
Positive63.6%
Neutral0.0%
Negative36.4%
Written reviews33 reviews
Positive90.9%
Neutral0.0%
Negative9.1%

HIIT

All ratings34 ratings
Positive82.4%
Neutral2.9%
Negative14.7%
Written reviews7 reviews
Positive57.1%
Neutral14.3%
Negative28.6%

In-app purchases

17 purchases

Sleep Brain

Subscriptions13
  • Weekly Premium$6.907 Days
  • Monthly_Premium_8.993 Days trial$8.991 Month
  • Monthly Premium$8.991 Month
Show 10 more
  • Monthly$8.991 Month
  • Weekly Premium$9.997 Days
  • Monthly7 Days trial$9.991 Month
  • Monthly$9.991 Month
  • Monthly_Premium2 variants$19.991 Month
  • Quarterly$19.993 Months
  • Six Months2 variants$29.996 Months
  • Yearly3 Days trial$49.991 Year
  • Yearly$49.991 Year
  • Yearly$89.991 Year
One-time4
  • One Week$0.99
  • One Month$9.99
  • Six Months$29.99
Show 1 more
  • One Year$49.99
8 purchases

HIIT

Subscriptions7
  • Premium Monthly Day 2$0.991 Month
  • Premium Weekly7 Days trial$3.997 Days
  • Premium Monthly Day 1$4.991 Month
Show 4 more
  • Premium Monthly7 Days trial$9.991 Month
  • Premium 3 Months$19.993 Months
  • Premium Annual Special Offer7 Days trial$29.991 Year
  • Interval Run Premium Yearly7 Days trial$59.991 Year
One-time1
  • Intreval Run Premium Lifetime$39.99

Questions

Is Sleep Brain free?
Sleep Brain is free to download, with in-app purchases available.
Is HIIT free?
HIIT is free to download, with in-app purchases available.
Which has better reviews, Sleep Brain or HIIT?
HIIT is rated higher. Sleep Brain averages 3.5 out of 5 from 11 ratings, while HIIT averages 4.3 from 34 ratings.
Do Sleep Brain or HIIT have ads?
Sleep Brain shows ads; HIIT does not.
Which is updated more often, Sleep Brain or HIIT?
Sleep Brain ships an update every 11 days, and HIIT every 2 weeks. Most recently, Sleep Brain was updated on October 2, 2026 and HIIT on October 6, 2026.

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