Comparison

Fit Interval vs Ares

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

Head to head
About

Fit Interval

This workout companion helps you achieve fitness goals with customizable interval timers for HIIT, strength training, and more. Easily set work/rest periods, durations, and monitor your progress through an intuitive interface.

Highlights
  • Customizable work/rest intervals
  • HIIT and strength training support
  • Set workout durations
  • Track progress
  • Intuitive interface
Features
Read full description

Achieve your fitness goals with Fit Interval, the ultimate workout companion! Whether you’re into HIIT, strength training, or custom interval workouts, FitTimer is designed to keep you on track. With an intuitive interface, you can easily customize work/rest intervals, set durations, and track your progress.

About

Ares

This app provides a customizable interval timer for various workouts like HIIT, Tabata, yoga, and stretching. It features real-time heart rate zone tracking with Apple Watch integration and allows users to create and save unlimited training sessions and workout sets. Voice cues guide users through workouts, ensuring focus remains on exercise.

Highlights
  • Customizable interval timer
  • HIIT, Tabata, Yoga, Stretch modes
  • Apple Watch control and heart rate zones
  • Unlimited training session saving
  • Workout set creation
  • Voice and sound cues
  • Training history tracking
Features
Read full description

An interval timer that does the counting for you. Set rounds, work and rest in seconds, and Ares guides you by voice through the whole workout: HIIT, Tabata, EMOM, AMRAP, circuits, yoga, stretching and mobility. Heart rate from Apple Watch or earbuds, your workout on the Lock Screen, no ads. INTERVAL TIMER • Work time, rest time and number of rounds, down to the second • Left/Right mode times each side for you. Perfect for stretching, yoga and exercises done one side at a time • Countdown before you start, the option to begin with a warmup and an optional final rest • Pin favorite workouts to the Home Screen and repeat your last one with a single tap WORKOUTS, SETS AND EXERCISES • Ready-made workouts and sets to get you started: 14 workouts and 6 sets, free • Save as many workouts as you like, each with its own name and icon, and edit or duplicate them anytime • Workout sets: rounds, custom rests between workouts, edit straight from the list • Share workouts and sets with a link or QR code, with a preview before adding • Exercise library, expanded regularly • Exercise names read aloud during your workout HEART RATE: APPLE WATCH AND EARBUDS • Control your workout from your wrist: pause, skip, resume • Live heart rate and heart rate zones on Apple Watch and iPhone • Heart rate from earbuds too, no watch needed, even on iPad: AirPods Pro 3, Powerbeats Pro 2 or newer (iOS and iPadOS 26 or later) • Train with just your watch: put a workout on Apple Watch and leave your iPhone at home • Calories tracked in every workout • Automatic sync with Apple Health ALWAYS AT HAND • Your workout on the Lock Screen and in the Dynamic Island, with a timer and a pause button, no unlocking needed • Widgets for the Home Screen and the Lock Screen • Keeps running with the screen locked and never stops your music, it just turns it down for voice cues • A big, clear timer on iPad that you can read from across the room PROGRESS AND HISTORY • Heart rate chart for every workout: work and rest with the average heart rate of each phase • Weekly trends for number of workouts and training time • Calendar, list and details of every workout • Share your result as a card for a story or post, with your own photo and title • Weekly streak: one workout a week keeps it alive • A reminder when your streak is at risk, at most once a week Privacy Policy: https://ares.eris.one/privacy-policy/ License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Fit Interval4 screens
Ares4 screens

Verdict

The call

The clearest difference is in-app purchases: Fit Interval at none against Ares's 3. Ares's advantage is update cadence (every 2 weeks vs every 13 months) and device support (3 vs 1). On price, review sentiment, ads 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. Ares sells 3 in-app purchases, starting at $1.99 per month. Fit Interval asks for nothing beyond the download.

UpkeepUpdate frequency

Fit Interval ships an update every 13 months, Ares every 2 weeks. The most recent releases landed on October 3, 2026 and October 18, 2026 respectively.

Scorecard3 real differences · 7 level
Fit Interval versus Ares: the parameters behind the verdict, then further details
ParameterFit IntervalAres
PriceFreeFree
Rating—5.0 (25 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings—25 — better
Update frequencyEvery 13 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS17.6 — better18.6
Further details — not scored
Size1 MB113 MB
Age rating4+4+
Developerismail nermisKrzysztof Orlowski

Customer experience

Fit Interval

Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Ares

All ratings25 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews19 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Fit Interval

No in-app purchases

3 purchases

Ares

Subscriptions2
  • Ares Plus$1.991 Month
  • Ares Plus$9.991 Year
One-time1
  • Ares Plus Forever$24.99

Questions

Is Fit Interval free?
Fit Interval is free to download, with no in-app purchases.
Is Ares free?
Ares is free to download, with in-app purchases available.
Do Fit Interval or Ares have ads?
Neither Fit Interval nor Ares shows ads.
Which is updated more often, Fit Interval or Ares?
Fit Interval ships an update every 13 months, and Ares every 2 weeks. Most recently, Fit Interval was updated on October 3, 2026 and Ares on October 18, 2026.

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