Comparison

HIIT vs Keelo

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

Head to head
About

HIIT

This app offers short, high-intensity interval training (HIIT) workouts that can be done anywhere with no equipment. It provides scientifically proven exercises, custom timer templates, and progress tracking to help users achieve fitness results quickly.

Highlights
  • Short, high-intensity workouts
  • Customizable timer templates
  • Step-by-step instructions
  • Calendar and weight tracking
  • Voice and video guidance
  • Apple Health integration
Features
Read full description

Get our HIIT Workout app to get results FAST! Just 4 minutes of high intensity tabata intervals training will make you sweat and get your heart pumping. Replace long cardio workouts with shorter and more effective HIIT workouts. No equipment needed. Workout anytime,anywhere. No excuses. Features: • Scientifically proven short high intensity workouts to improve your health. • Custom templates so you can build your own timers. • Step by step instructions suitable for beginners and intermediates alike. • Calendar and weight tracker to track your progress. • Voice and video instructions. It's like having a personal trainer in your pocket. • This app is integrated with Apple Health to track your workouts,calories and weight. Free,quick and effective. What are you waiting for? Download the app,and get sweating! 7M - We heart fitness! SUBSCRIPTION PRICING AND TERMS We offer the following auto-renewing subscriptions: $29.99 per year $2.99 per week These prices are for United States 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 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. If you subscribe before your free trial ends,the rest of your free trial period will be forfeited as soon as your purchase is confirmed. Read more about our terms and conditions here: Terms of Use: https://7mfitness.com/terms-of-use/ Privacy Policy: https://7mfitness.com/privacy-policy/

About

Keelo

This app offers high-intensity functional fitness training combining strength and conditioning. It uses an AI algorithm to personalize your workouts, track progress, and provide instructional videos. Workouts can be done anywhere, with or without equipment.

Highlights
  • AI-personalized workouts
  • Strength and conditioning
  • Full body training
  • HD instructional videos
  • Workout anywhere
  • Leaderboards
  • Email coaching
Features
Read full description

KEELO is the high intensity functional fitness (strength + conditioning) program that delivers real, measurable results. FEATURED BY • Apple - Today: Stronger Abs, Best New Updates • Men's Health - Best Personal Training Apps • Men's Fitness - Best Health and Fitness Apps • SHAPE - Best HIIT Strength Training App • SELF - 13 Best New Workout Apps • Forbes - Top 12 Health & Fitness Apps • Cult of Mac - Best Strength Training Apps • Elite Daily - 17 Apps for Resolutions KEELO IS FOR YOU, IF YOU WANT: • Strength to lift & carry heavy objects in real life without strain • Stamina to climb flights of stairs without feeling winded • Endurance to hike long distances without trouble • Physical independence throughout your life MORE ABOUT KEELO FULL BODY WORKOUT We combine strength, cardio, and conditioning into one program. You'll work and develop your body's full musculoskeletal, central nervous, cardiovascular, and metabolic systems. PERSONALIZED PROGRAM Keelo's AI-based algorithm examines your entire workout history to ensure you're working all parts of the body and getting the most out of your workouts. We keep the muscle confusion high. DON’T THINK, JUST DO We show you exactly what to do. No more guessing: "what workout should I do today?" Keelo keeps track of your scores and progress. DO ANYWHERE At home or gym. Bodyweight-only workouts included. Some gym equipment, e.g. barbell, dumbbells, kettlebells, recommended. But don’t worry. If you don’t have equipment, let us know. We’d be happy to suggest alternatives! LEADERBOARDS See how well you've done compared to others in your peer group! FREE COACHING BY EMAIL Email your coach at coach@keelo.com at any time to ask questions about workouts, alternative movements, weight selection, and more. We want you to succeed. COACHING BY CHAT (PREMIUM) Chat with your coach to get faster responses to your workout questions. APPLE HEALTH With your permission, we sync your calories burned and workout time with Apple Health. If completed through an Apple Watch, we also record your heart rate during the workout. More Features: • HD instructional videos for all movements. • All workouts scalable to beginners and experienced alike. • Works with most Bluetooth heart rate monitors. • No login required. Just open the app and go. • New workouts added regularly. _____________________ ABOUT KEELO PREMIUM SUBSCRIPTION Keelo is free to download and use. To further your training plan and variety, Keelo Premium provides coaching, programming, strength, warm ups, cool downs, and unlocks all workouts. Keelo Premium plans begin with a two-week free trial for new members. If you cancel during this trial period, you will not be charged. If you continue with your plan, payment will be charged to your App Store account at confirmation of purchase. (USD $12.99 for monthly, USD $30.99 for quarterly, USD $93.99 for annually.) Any unused portion of the free trial period will be forfeited upon purchase. Your plan will automatically renew within 24-hours prior to the end of the current period, unless canceled beforehand. You may cancel your plan or turn off auto-renew at any time by adjusting your App Store settings. Terms of service: http://keelo.com/tos Privacy policy: http://keelo.com/privacy _____________________ PLEASE SAY HELLO If you encounter any issues, please email us at feedback@keelo.com. That way, we'll be able to respond directly. Your feedback helps us fix and improve our app. Thank you!

Screenshots

HIIT4 screens
Keelo4 screens

Verdict

The call

The clearest difference is ads: Keelo at none against HIIT's shown. Keelo also leads on update cadence (every 2 weeks vs monthly) and device support (4 vs 2). HIIT's advantage is review sentiment (91% vs 80%) and ratings volume (31K vs 6K). On price, rating, 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. HIIT sells 11 in-app purchases, starting at $2.99 per 7 days and Keelo sells 9 in-app purchases, starting at $12.49 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for HIIT against 4.8 for Keelo. That said, the two scores are not equally well evidenced: HIIT has 31K ratings behind it against 6K, so its average is the more settled of the two. Written reviews are what separate them: 91% of HIIT's written reviews are positive against 80% of Keelo's.

UpkeepUpdate frequency

HIIT ships an update monthly, Keelo every 2 weeks. The most recent releases landed on October 29, 2026 and November 1, 2026 respectively.

Scorecard6 real differences · 4 level
HIIT versus Keelo: the parameters behind the verdict, then further details
ParameterHIITKeelo
PriceFreeFree
Rating4.8 (31K ratings) — better4.8 (6K ratings)
Positive reviews90.8% of reviews — better80.4% of reviews
Number of ratings31K — better6K
Update frequencyMonthlyEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod, Apple Watch — better
Requires iOS16.012.2 — better
Further details — not scored
Size159 MB77 MB
Age rating4+17+
DeveloperFast Builder LimitedThrowdown Labs, Inc

Customer experience

HIIT

All ratings31,065 ratings
Positive96.7%
Neutral2.4%
Negative0.8%
Written reviews382 reviews
Positive90.8%
Neutral3.1%
Negative6.0%

Keelo

All ratings5,975 ratings
Positive96.5%
Neutral1.7%
Negative1.8%
Written reviews235 reviews
Positive80.4%
Neutral6.8%
Negative12.8%

User reviews

HIIT

From 31K App Store ratings

What we love

  • 👍 Variety and flexibility of workouts
  • 🚀 Easy to follow and effective workouts
  • 💪 Workouts challenge users and help them see results
  • 🎨 Good range of difficulty levels
  • ⏱️ Convenient short workout options

Room to improve

  • 🐛 Some workouts are too easy or repetitive
  • 🔇 Lack of music or audio guidance during workouts
  • 💰 Concerns about paid subscription model
  • 🤔 Lack of modifications or low-impact options

Keelo

From 6K App Store ratings

What we love

  • 🚀 Efficient workouts
  • 👍 Customizable to equipment
  • 👍 Variety of exercises
  • 👍 Motivating and challenging
  • 👍 Clear video demonstrations

Room to improve

  • 🐛 Buggy and glitchy
  • 🔍 Lack of customer support
  • 💰 Expensive subscription
  • 🔍 Workouts can be repetitive
  • 🔍 Difficulty scaling exercises

Bugs and requests

HIIT

Reported bugs

2 issues
  • Some videos or links not working
  • Occasional crashes or performance issues

Requested features

4 requests
  • Option to create custom workouts
  • More workout types beyond just HIIT
  • Integration with fitness tracking apps
  • Ability to save favorite workouts

Keelo

Reported bugs

4 issues
  • Timer issues and syncing problems
  • Crashing and freezing on certain devices
  • Inability to delete account
  • Recommended workouts not always suitable

Requested features

5 requests
  • Offline workout mode
  • Ability to create custom workouts
  • Better integration with fitness tracking devices
  • More strength-focused programming
  • Improved warm-up and cool-down options

In-app purchases

11 purchases

HIIT

Subscriptions11
  • Lock-in our cheapest price!3 Days trial$2.997 Days
  • 7M Pro$2.997 Days
  • Get Yearly Premium!$9.991 Year
Show 8 more
  • Interval Timer Pro + Workouts$12.991 Month
  • Interval Timer X premium7 Days trial$19.993 Months
  • 7M Pro$19.993 Months
  • Get Monthly Premium!$19.991 Month
  • Get Yearly Premium!$19.991 Year
  • Interval Timer X premium$29.991 Year
  • 7M Pro7 Days trial$29.991 Year
  • Interval Timer Pro + Workouts7 Days trial$39.991 Year
9 purchases

Keelo

Subscriptions9
  • Keelo Premium - Month14 Days trial$12.491 Month
  • Keelo Premium - 1 Month14 Days trial$14.991 Month
  • Keelo Premium - 1 Month1 Month trial$14.991 Month
Show 6 more
  • Keelo Premium - 3 Months14 Days trial$29.993 Months
  • Keelo Premium - 3 Months14 Days trial$35.993 Months
  • Keelo Premium - 3 Months3 Months trial$35.993 Months
  • Keelo Premium - Year14 Days trial$89.991 Year
  • Keelo Premium - Year14 Days trial$107.991 Year
  • Keelo Premium - Year1 Year trial$107.991 Year

Questions

Is HIIT free?
HIIT is free to download, with in-app purchases available.
Is Keelo free?
Keelo is free to download, with in-app purchases available.
Which has better reviews, HIIT or Keelo?
HIIT is rated higher. HIIT averages 4.8 out of 5 from 31K ratings, while Keelo averages 4.8 from 6K ratings.
Do HIIT or Keelo have ads?
HIIT shows ads; Keelo does not.
Which is updated more often, HIIT or Keelo?
HIIT ships an update monthly, and Keelo every 2 weeks. Most recently, HIIT was updated on October 29, 2026 and Keelo on November 1, 2026.

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