Comparison

HIIT vs Juna

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

Head to head
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/

About

Juna

Read full description

Juna is your all-in-one companion for your cycle, your mood, and your daily self-care. Track your period, see what's coming next, and get gentle nutrition and fitness guidance built around where you are in your cycle — with a little cosmic inspiration each morning. TRACK YOUR CYCLE • Log your period in seconds and see your full cycle on a clean calendar • Predictions for your next period, fertile window, and ovulation day • Understand your phases — menstrual, follicular, ovulation, and luteal • Log symptoms, flow, and mood to spot your own patterns over time READ YOUR STARS • A fresh, professionally written daily horoscope for your sign • A calm morning moment that fits right into your routine NUTRITION MADE FOR YOU • Simple, phase-friendly meal ideas and healthy-eating suggestions • Guidance that adapts as your cycle changes FITNESS MADE FOR YOU • Personal targets from your height, weight, age, and activity level • BMI insight and daily calorie guidance • Encouraging reminders to keep you moving GENTLE REMINDERS • Timely notifications for your period, fertile window, and self-care • Optional partner reminders to keep loved ones in the loop PRIVATE BY DESIGN • Your health data is yours. We never sell it or use it for advertising. • Secure sign-in with Apple or Google Juna is designed for everyday wellness and is not a medical device. It does not provide medical advice, diagnosis, or contraception guidance. Always consult a healthcare professional for medical concerns. — SUBSCRIPTION — Juna Premium unlocks the full experience (cycle predictions, daily horoscope, nutrition & fitness plans, and partner reminders). • Juna Premium — 1 year — $59.99 (auto-renewable) Payment is charged to your Apple Account at confirmation of purchase. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription in your Apple Account settings after purchase. Privacy Policy: https://ageansoft.com/auntflo/privacy/ Terms of Use (EULA): https://ageansoft.com/juna/terms/

Screenshots

HIIT4 screens
Juna4 screens

Verdict

The call

The clearest difference is update cadence: Juna at every 3 days against HIIT's every 2 weeks. Juna also leads on iOS requirement (15.1 vs 17.0). 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. HIIT sells 8 in-app purchases, starting at $0.99 per month and Juna sells 1 in-app purchase, starting at $59.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

HIIT ships an update every 2 weeks, Juna every 3 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
HIIT versus Juna: the parameters behind the verdict, then further details
ParameterHIITJuna
PriceFreeFree
Rating4.3 (34 ratings) — better—
Positive reviews57.1% of reviews—
Number of ratings34 — better—
Update frequencyEvery 2 weeksEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS17.015.1 — better
Further details — not scored
Size83 MB33 MB
Age rating4+12+
DeveloperMaxim KazakovISMAIL CELIK

In-app purchases

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
1 purchases

Juna

Subscriptions1
  • Juna Premium$59.991 Year

Questions

Is HIIT free?
HIIT is free to download, with in-app purchases available.
Is Juna free?
Juna is free to download, with in-app purchases available.
Do HIIT or Juna have ads?
Neither HIIT nor Juna shows ads.
Which is updated more often, HIIT or Juna?
HIIT ships an update every 2 weeks, and Juna every 3 days. Most recently, HIIT was updated on October 23, 2026 and Juna on October 24, 2026.

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