Comparison

Sprint Eight vs atZone

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

Head to head
About

Sprint Eight

This app guides you through a high-intensity interval training workout designed for maximum calorie burn in minimal time. It provides timed intervals for sprinting and resting, allowing you to perform the exercise without specialized equipment.

Highlights
  • High Intensity Interval Training (HIIT)
  • Maximum calorie burn
  • No extra equipment needed
  • Timed sprint and rest intervals
  • 30-second sprint / 90-second rest cycle
Features
Read full description

Working out is never fun so you need to get the most out of your workout when you can do it. Sprint-8 is a form of High Intensity Interval Training (HIIT) that allows maximum calorie burn in the shortest timeframe. Usually, this particular workout is done on a treadmill or stationary bicycle. This app lets you do the Sprint-8 workout and not have to have any extra equipment. It tells you when to sprint and then when to rest. Sprint-8 does this on a 30 second sprint/90 second rest cycle.

About

atZone

This app offers immersive and inspiring home workouts across various disciplines like running, cycling, and strength training. It features personalized training plans, on-demand classes, virtual journeys, and advanced motion tracking for guided strength sessions.

Highlights
  • Personalized workout plans
  • On-demand fitness classes
  • Virtual exercise journeys
  • HIIT workouts (Sprint 8)
  • Motion tracking for strength training
  • Workout data syncing
  • Progress tracking
Read full description

Now you can get a complete workout at home that’s as immersive as it is inspiring, whether you love a great run, a smooth elliptical workout, an exhilarating ride, strength training or a little bit of everything. With Horizon Fitness equipment featuring @Zone, you can take on workouts personalized to your unique goals, redefine your body with HIIT, access on-demand classes, take on guided strength training with our advanced motion tracking system or race through exotic virtual journeys. You can even sync your workout data to third-party apps, connect wearables and chart your progress against the top @Zone users worldwide. Download the app today, and make sure your next workout is in the zone. MOVE YOUR WAY Whether you’re passionate about running, cycling, strength training or cross-training, @Zone has you covered. With support for multiple workout formats, you can keep your routine exciting and perfectly tailored to your fitness goals. GET RESULTS YOU CAN SEE IN THE MIRROR Count on transformative results with scientifically validated Sprint 8 HIIT. Sprint 8 uses high-intensity interval training to stimulate a natural human growth hormone, burning fat and building muscle in ways fads can’t. Best of all, anyone can fit the short, 20-minute workouts into their schedule, and they can be done right in your home on your treadmill, indoor cycle, exercise bike or elliptical. EXPERIENCE THE STUDIO AT HOME With a range of on-demand fitness classes and motivating trainers at your fingertips, you’ll always be able to access an inspiring studio experience right for your goals and schedule, right in your home. No matter how you like to get your heart pumping, you’ll discover workouts that pair perfectly with your home cardio and strength equipment. EXPLORE THE WORLD AT HOME Our Virtual Active exercise program transports your home workout to exotic locales all over the world. Shot on location by professional film crews, the HD footage speeds up or slows down to match your workout, and incline varies to match the terrain, making you feel like you’re really there. You can even race against your own best performances, motivating you to beat your own avatar to the finish line. MEET YOUR NEW COACH Get personalized training plans designed around your specific objectives — be it improving heart health, burning calories or building muscle — with our versatile and goal-oriented training assistant. With built-in programs for tracking time, distance, calories and heart rate, @Zone makes sure you’re always on the path to success. CAPTURE EVERY REP & SET Our unique motion tracking system detects the position of your skeleton for guided strength training workouts. Not only will @Zone help you refine your form on a wide variety of exercises for better results, it will also keep track of your reps and sets when using dumbbells and kettlebells for a more streamlined experience. STAY ON TRACK FOR YOUR GOALS A home workout history feature consolidates exercise data and lets you review your fitness progress from workout to workout and by weeks, months and years. You can even access the worldwide leaderboard to see how your performance compares to the top users of @Zone. CONNECT & SYNC If you’re using a third-party app like Apple Health, Fitbit or others to exercise, @Zone will automatically sync your workout data across platforms and devices so you can see everything in one place. You can even connect your smart watch to put complete control of strength workouts on your wrist.

Screenshots

Sprint Eight2 screens
atZone4 screens

Verdict

The call

Sprint Eight and atZone both sit at 4.4 stars, but that hides the real split: 60% of Sprint Eight's written reviews are positive against 17% of atZone's. Sprint Eight also leads on in-app purchases (none vs 3) and iOS requirement (10.3 vs 15.0). atZone's advantage is ratings volume (355 vs 11). On price, rating, update cadence and ads 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. atZone sells 3 one-off in-app purchases. Sprint Eight asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for Sprint Eight against 4.3 for atZone. That said, the two scores are not equally well evidenced: atZone has 355 ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 60% of Sprint Eight's written reviews are positive against 17% of atZone's.

UpkeepUpdate frequency

Sprint Eight ships an update every 6 weeks, atZone monthly. The most recent releases landed on November 2, 2026 and November 11, 2026 respectively.

Scorecard4 real differences · 6 level
Sprint Eight versus atZone: the parameters behind the verdict, then further details
ParameterSprint EightatZone
PriceFreeFree
Rating4.4 (11 ratings) — better4.3 (355 ratings)
Positive reviews60.0% of reviews — better16.7% of reviews
Number of ratings11355 — better
Update frequencyEvery 6 weeksMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS10.3 — better15.0
Further details — not scored
Size21 MB172 MB
Age rating4+4+
DeveloperBrad McAnalleyJOHNSON HEALTH TECH CO., LTD.

Customer experience

Sprint Eight

All ratings10 ratings
Positive80.0%
Neutral10.0%
Negative10.0%
Written reviews5 reviews
Positive60.0%
Neutral20.0%
Negative20.0%

atZone

All ratings254 ratings
Positive80.3%
Neutral4.3%
Negative15.4%
Written reviews60 reviews
Positive16.7%
Neutral21.7%
Negative61.7%

Bugs and requests

Sprint Eight

Not enough reviews yet to summarise bugs or requests.

atZone

Reported bugs

21 issues
  • App disconnects from Apple Watch during workouts
  • Heart rate data fails to collect or display
  • Target heart rate mode doesn't auto-reduce treadmill speed
  • Bluetooth connection drops frequently
  • App crashes on Sprint 8 workouts
Show 16 more
  • Calorie calculations show 20-30% discrepancy between live and summary
  • Distance tracking stops short of target (0.5-1 mile)
  • Timer, resistance, and cadence freeze during video playback
  • App freezes on Apple Watch Ultra 2
  • Workout data not recording or deleted without user action
  • Double workout logging to Apple Health and Apple Watch
  • November 2024 update broke Horizon treadmill pairing
  • App stops recording without notification
  • Incorrect stats pushed to Apple Health
  • Height selection shows feet instead of standard height format
  • Email login rejects addresses with numbers
  • Virtual resistance changes don't match landscape elevation
  • App ignores device orientation changes
  • Workout continues past completion time without indication
  • Heart rate monitor data not sent back to treadmill console
  • Fitbit sync stops working after initial connection

Requested features

18 requests
  • Custom workouts with more than 10 segments
  • Ability to save custom workout templates
  • Incline control for individual workout segments
  • Average heart rate display per segment in workout summary
  • Data export functionality for verification
Show 13 more
  • Incline and elevation gain data in Strava syncs
  • Pace/split information synced to Strava
  • TrainingPeaks integration
  • Norwegian 4x4 workout option for treadmill
  • AI-powered interval adjustments based on progress
  • More running training programs and interval plans
  • Landscape mode support on iPad
  • Ability to change workout type from run to walk
  • Average watts display in workout summary
  • Free trial or test mode for workouts
  • Interval program compatibility with app
  • User-adjustable warm-up and interval speeds
  • In-app Z-Points purchase option

In-app purchases

None

Sprint Eight

No in-app purchases

3 purchases

atZone

One-time3
  • Z Point 120$1.99
  • Z Point 240$2.99
  • Z Point 480$4.99

Questions

Is Sprint Eight free?
Sprint Eight is free to download, with no in-app purchases.
Is atZone free?
atZone is free to download, with in-app purchases available.
Which has better reviews, Sprint Eight or atZone?
Sprint Eight is rated higher. Sprint Eight averages 4.4 out of 5 from 11 ratings, while atZone averages 4.3 from 355 ratings.
Do Sprint Eight or atZone have ads?
Neither Sprint Eight nor atZone shows ads.
Which is updated more often, Sprint Eight or atZone?
Sprint Eight ships an update every 6 weeks, and atZone monthly. Most recently, Sprint Eight was updated on November 2, 2026 and atZone on November 11, 2026.

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