Comparison

Intervals Pro vs Just Run

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

Head to head
About

Intervals Pro

Create and follow custom interval training routines for various fitness activities. This app offers extensive customization for intervals, alerts, and goals, with seamless integration for Apple Watch and Apple Health.

Highlights
  • Highly customizable intervals (time/distance)
  • Spoken interval names and prompts
  • Standalone Apple Watch workouts
  • Workout history with Apple Health
  • Home screen widgets for quick launch
  • Bluetooth heart rate monitor support
  • Siri Shortcuts integration
Features
Read full description

Custom Interval Training at its best for iPhone, Apple Watch and iPad. Featured by Apple and recommended by fitness instructors, personal trainers, marathon runners, and coaches. Let Intervals Pro guide you through any type of interval workout: HIIT, running, strength training, yoga, stretching, circuit training, boxing, MMA, elliptical, rehabilitation, meditation, 7-minute workouts, and many more. FEATURED BY • Apple - App of the Day in 132 Countries • Apple - Workout with Apple Watch, Quick HIIT Workouts • Women's Health Magazine • COACH Magazine • SixColors.com HIGHLIGHTS • Highly Customizable • Home Screen Widgets to quickly launch timers • Spoken interval names and prompts • Customizable alert sounds • Standalone Apple Watch workouts. Leave your iPhone at home! • Workout History using Apple Health data • View an Apple Watch workout live on your iPhone! • Run in the background with the screen locked • Play music or podcasts using the app of your choice • Bluetooth heart rate monitor support for Apple Watch or iPhone • Fill your Activity Rings • Siri Shortcuts • Share timers with friends • Time and Distance Goals • Running Pace and Heart Rate Targets • Auto pause and resume • Send completed workouts to Strava • Confetti! PERSONALIZE YOUR WORKOUT • Customize the Name, Duration, Alert, and Color for each interval • Customize Alert Sounds and Voice Prompts to guide you through your workout • Set a Countdown Alert and vibrations when the interval is about to end • Optional halfway alert • Set target heart rate ranges for each interval • Set time and distance goals FLEXIBLE INTERVAL DURATIONS • Time based (e.g., 45 seconds) • Distance-based (e.g., 0.5 MI or KM) • Count up intervals keep running until your ready for the next interval • Estimated time or distance. Count down time or distance to zero and then continue the interval, counting up until you're ready to move on. THE BEST APPLE WATCH INTERVAL TIMER • Leave your phone at home with our standalone Apple Watch app • Control your music or podcasts on the "Now Playing" screen • View an Apple Watch workout live on your iPhone • Alert Sounds and Voice Prompts to guide you through your workout • Configurable haptic alert countdown that taps you on the wrist when the interval is ending • Track heart rate, calories, distance, and pace • Route tracking for running, walking, and cycling • Workouts contribute to the Apple Watch Activity Rings WORKOUT HISTORY USING APPLE HEALTH • Intervals Pro has the best Apple Health integration of any interval training app • Track heart rate, calories, distance, and pace • Route tracking for running, walking, and cycling • Detailed stats for every interval • All your data is safely stored in Apple Health GREAT FOR RUNNING AND CYCLING • Interval duration can be set to either a specified time or distance • Display current pace, pace for the interval, or pace for the entire run • Configure heart rate ranges per interval • Analyze each interval of your run in the workout history MULTIPLE VOICES AND LANGUAGES • Select the language and voice to use for all spoken alerts. • Spoken alerts are localized to 10 languages. Chinese (simplified), Danish, Dutch, French, German, Italian, Norwegian, Polish, Spanish, and Swedish. Get Intervals Pro today, and your workouts will never be the same! SUBSCRIPTION INFO Intervals Pro is free to download and has a free timer. To create multiple timers and unlock all the features of the app, you may choose between a monthly or yearly auto-renewing subscription option. Upon confirmation of the purchase, payment will be charged to your credit card through your iTunes account. Subscription renews automatically unless canceled at least 24 hours before the end of the subscription period. Subscriptions can be managed and auto-renewal turned off in Account Settings in the App Store app. Privacy Policy and Terms of Service: https://intervalspro.com/privacy-policy.html

About

Just Run

This app guides you from a beginner runner to completing a 5K in 9 weeks with a structured workout plan. It also offers a 6-week plan to progress from 5K to 10K. Enjoy ad-free workouts with customizable trainer voices and background operation.

Highlights
  • Zero to 5K training plan
  • 5K to 10K training plan
  • Customizable trainer voices
  • Background operation
  • Music/podcast integration
  • No ads
Features
Read full description

Just Run is a simple workout app to help you get running. I made this app to get myself off the couch and start running to get to 5K. Stick to the workout plan, and you'll be able to run 5K in 9 weeks. It really does work! If you're already able to run 5K, Just Run also has a 6-week plan to help you get up to 10K! WORKOUT PLANS: - Zero to 5K: Gets you from absolute zero running experience to 5K in just 9 weeks, with three 30-minute workouts per week - 5K to 10K: If you can already run 5K, or have finished Zero to 5K, this plan gets you to 10K in only 6 weeks FEATURES: - Target dates for each workout, calculated based on your progress, and optimal exercise days - Choose from multiple trainer voices, which tell you exactly when to run and walk - No ads! Ads are no fun, so Just Run has no ads! - Works with music, audiobook and podcast apps - Just Run will briefly lower the volume of the other app when prompting you to run and walk, so you'll never miss a prompt - Runs in the background. Turn off your screen, or switch to another app, and you'll still hear the run and walk prompts - Upgrade to Premium to get more trainer voices, multiple theme options, and to support continued development of Just Run I'd love to hear how you're getting on with Just Run. You can email me at run@jupli.com.

Screenshots

Intervals Pro4 screens
Just Run4 screens

Verdict

The call

Intervals Pro and Just Run both sit at 4.8 stars, but that hides the real split: 99% of Just Run's written reviews are positive against 84% of Intervals Pro's. Intervals Pro's advantage is update cadence (weekly vs every 3 weeks) and ratings volume (14K vs 1.3K). On price, rating, ads and in-app purchases 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. Intervals Pro sells 8 in-app purchases, starting at $2.99 per month and Just Run sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Just Run holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Intervals Pro has 14K ratings behind it against 1.3K, so its average is the more settled of the two. Written reviews point the same way: 84% of Intervals Pro's written reviews are positive against 99% of Just Run's.

UpkeepUpdate frequency

Intervals Pro ships an update weekly, Just Run every 3 weeks. The most recent releases landed on October 31, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Intervals Pro versus Just Run: the parameters behind the verdict, then further details
ParameterIntervals ProJust Run
PriceFreeFree
Rating4.8 (14K ratings)5.0 (1.3K ratings) — better
Positive reviews84.3% of reviews98.9% of reviews — better
Number of ratings14K — better1.3K
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS17.5 — better18.0
Further details — not scored
Size66 MB9 MB
Age rating4++4
DeveloperIntervals, LLCJupli

Customer experience

Intervals Pro

All ratings13,710 ratings
Positive95.2%
Neutral1.7%
Negative3.2%
Written reviews1,085 reviews
Positive84.3%
Neutral4.9%
Negative10.8%

Just Run

All ratings1,235 ratings
Positive99.0%
Neutral0.2%
Negative0.8%
Written reviews611 reviews
Positive98.9%
Neutral0.0%
Negative1.1%

User reviews

Intervals Pro

From 14K App Store ratings

What we love

  • 👍 Customizable timers and intervals
  • 🚀 Seamless Apple Watch integration
  • 💪 Helps with fitness goals and training
  • 🔍 Detailed workout tracking and analytics
  • 🎨 Intuitive and user-friendly interface

Room to improve

  • 🐛 Occasional sync and connectivity issues
  • 🔍 Lack of clear guidance and documentation
  • 💰 Paid version required for full functionality

Just Run

From 1.3K App Store ratings

What we love

  • 🚀 Simple, no frills app
  • 👍 Easy to use and follow
  • 🔒 No ads or subscriptions
  • 💡 Helpful audio cues
  • 👍 Achievable progression

Room to improve

  • 🐛 Occasional issues with audio cues not triggering
  • 💡 Lack of distance/pace tracking

Bugs and requests

Intervals Pro

Reported bugs

2 issues
  • Workout data not syncing correctly
  • App crashes or freezes on certain devices

Requested features

3 requests
  • More customization options for interval displays
  • Ability to batch delete or manage workout history
  • Integration with more third-party fitness apps

Just Run

Reported bugs

2 issues
  • Progress not always saved correctly
  • Occasional app freezing/crashing

Requested features

2 requests
  • Integration with fitness trackers/smartwatches
  • More customization options (e.g. voice selection)

In-app purchases

8 purchases

Intervals Pro

Subscriptions2
  • Monthly Membership7 Days trial$2.991 Month
  • Yearly Membership7 Days trial$19.991 Year
One-time6
  • Generous Tip$0.99
  • Awesome Tip$1.99
  • Massive Tip$4.99
Show 3 more
  • Amazing Tip$9.99
  • Intervals Pro (Legacy)$69.99
  • Lifetime Access$69.99
2 purchases

Just Run

One-time2
  • Premium$3.99
  • Premium + Tip$5.49

Questions

Is Intervals Pro free?
Intervals Pro is free to download, with in-app purchases available.
Is Just Run free?
Just Run is free to download, with in-app purchases available.
Which has better reviews, Intervals Pro or Just Run?
Just Run is rated higher. Intervals Pro averages 4.8 out of 5 from 14K ratings, while Just Run averages 5.0 from 1.3K ratings.
Do Intervals Pro or Just Run have ads?
Neither Intervals Pro nor Just Run shows ads.
Which is updated more often, Intervals Pro or Just Run?
Intervals Pro ships an update weekly, and Just Run every 3 weeks. Most recently, Intervals Pro was updated on October 31, 2026 and Just Run on October 30, 2026.

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