Comparison

Intervals Pro vs Instruct

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

Instruct

This app helps group fitness instructors quickly plan, design, and choreograph classes. It offers an AI-powered bot to generate custom workouts, a smart library for organizing past classes, and automatic timer integration. Spend less time planning and more time teaching.

Highlights
  • On-demand Class Builder Bot
  • Smart Library for past classes
  • Automatic timer integration
  • Review and edit class flow
  • Save and reuse workout templates
  • Instructor-first interface
Features
Read full description

Instruct is an AI-powered interval timer built for group fitness instructors. Plan, program, and run your classes in seconds—without manual setup. Using the most advanced AI, you can now build workouts, time intervals, and organize your templates in seconds. Timing your fitness classes just got easier: Instant Class Programming Turn ideas into fully structured interval timers: Prompt: “30-min HIIT with dumbbells + core” → ready-to-run timer AI Interval Timer Engine Automatically builds work/rest blocks, circuits, and workout flows for HIIT, Cycling, Bootcamp, Boxing, Treadmill, Rowing, TRX, Strength, Pilates, etc. Template to Timer Conversion Already have your class plan? Upload or reuse class templates → instantly converted into timed intervals Real-Time Class Runtime Run your class with beeps, voice cues, and seamless transitions No Timer Setup Required Skip manual interval programming completely. Instruct fills in time, exercise, and description in seconds. Smart Class Library Store, remix, and regenerate workouts from past classes Built for How You Actually Teach Supports HIIT, strength, bootcamp, cycling, conditioning, boxing, pilates, yoga, aquafit, and more. Audio & Compatibility Works alongside your music apps (Spotify, FitRadio, SoundCloud, PowerMusic, Apple Music, etc.) Does not interrupt music playback Choose voice cues, beeps, or silent transitions Instruct is a subscription-based app. There is no free or limited mode—an active subscription is required to use all features, including class builders and timers. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://instructgroupfitness.com/privacy

Screenshots

Intervals Pro4 screens
Instruct4 screens

Verdict

The call

The clearest difference is monetization model: Intervals Pro at free with in-app purchases against Instruct's subscription. Intervals Pro also leads on update cadence (every 8 days vs every 2 months) and ratings volume (14K vs 5). Instruct's advantage is review sentiment (100% vs 84%) and rating (5.0 vs 4.8). On price, ads, in-app purchases and device support 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 Instruct sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Instruct 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 5, 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 100% of Instruct's.

UpkeepUpdate frequency

Intervals Pro ships an update every 8 days, Instruct every 2 months. The most recent releases landed on October 12, 2026 and September 30, 2026 respectively.

Scorecard6 real differences · 4 level
Intervals Pro versus Instruct: the parameters behind the verdict, then further details
ParameterIntervals ProInstruct
PriceFreeFree
Rating4.8 (14K ratings)5.0 (5 ratings) — better
Positive reviews84.4% of reviews100.0% of reviews — better
Number of ratings14K — better5
Update frequencyEvery 8 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.514.0 — better
Further details — not scored
Size69 MB42 MB
Age rating4+17+
DeveloperIntervals, LLCInstruct

Customer experience

Intervals Pro

All ratings13,612 ratings
Positive95.1%
Neutral1.7%
Negative3.2%
Written reviews1,081 reviews
Positive84.4%
Neutral4.9%
Negative10.7%

Instruct

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Instruct

Not enough reviews yet to summarise bugs or requests.

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

Instruct

Subscriptions2
  • Weekly Pro Access (Instruct +)7 Days trial$2.997 Days
  • Monthly Pro Access (Instruct +)7 Days trial$7.991 Month

Questions

Is Intervals Pro free?
Intervals Pro is free to download, with in-app purchases available.
Is Instruct free?
Instruct is free to download, with in-app purchases available.
Which has better reviews, Intervals Pro or Instruct?
Instruct is rated higher. Intervals Pro averages 4.8 out of 5 from 14K ratings, while Instruct averages 5.0 from 5 ratings.
Do Intervals Pro or Instruct have ads?
Neither Intervals Pro nor Instruct shows ads.
Which is updated more often, Intervals Pro or Instruct?
Intervals Pro ships an update every 8 days, and Instruct every 2 months. Most recently, Intervals Pro was updated on October 12, 2026 and Instruct on September 30, 2026.

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