Comparison

INTVL vs Exercise Timer Resero

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

Head to head
About

INTVL

Features
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INTVL is the interval timer built for athletes who demand precision. Whether you're crushing a HIIT session, powering through Tabata rounds, or timing your boxing drills โ€” INTVL keeps you in the zone with clear audio cues, voice coaching, and haptic feedback so you never miss a beat. PRECISION TIMER Frame-perfect countdown with color-coded intervals. Large, high-contrast display visible from across the room. Loud audio cues that cut through gym noise. Haptic vibrations so you can feel every transition. Background mode keeps the timer running even when your phone is locked. DRAG & DROP WORKOUT BUILDER Design custom workout sequences with an intuitive drag & drop interface. Add work, rest, prepare, and cooldown phases. Set rounds, adjust durations, and preview your total workout time โ€” all before you start. Save unlimited presets for your favorite routines. VOICE COACH Built-in voice coaching announces interval changes, countdowns, and motivational cues. Adjustable speech rate and language-aware โ€” speaks in your device language. Train without looking at your screen. WORKOUT LIBRARY Browse preset workouts across HIIT, Tabata, Cardio, Strength, and Yoga categories. Filter by intensity level and duration. Start any workout in seconds, or use presets as templates to customize. QUICK SETUP Not ready for the builder? Use Quick Setup to configure work time, rest time, and rounds in 3 taps. Perfect for simple interval sessions. ANALYTICS & STREAKS Track your workout history with detailed stats. See calories burned, total work time, and rounds completed. Maintain consistency streaks and visualize your weekly training trends. Stay motivated with insights into your progress. DESIGNED FOR FOCUS Pure black OLED-optimized interface designed for zero distraction during intense training. Color-coded phases โ€” green for work, blue for rest, yellow for prepare, orange for cooldown โ€” let you know what's coming at a glance. BUILT FOR EVERY ATHLETE Perfect for HIIT, CrossFit, Tabata, boxing, MMA, circuit training, running intervals, cycling, rowing, yoga flows, stretching routines, and any activity that needs precise timing. INTVL PRO Unlock the full experience with a free trial: โ€ข Unlimited custom timer presets โ€ข Full workout library access โ€ข Advanced analytics and insights โ€ข Priority support Download INTVL and take control of your training. Your next personal best starts now. INTVL Pro โ€“ Yearly Subscription - Full access to all features - Unlimited interval workouts & custom timers - Auto-renews yearly โ€“ cancel anytime in iPhone Settings Privacy Policy: https://intvltimer.app/privacy-policy Terms of Use (EULA): https://intvltimer.app/terms-of-use

About

Exercise Timer Resero

Features
Read full description

The only Exercise Timer you need. Resero is a premium interval timer built for athletes, coaches, and anyone serious about their fitness. RE-SE-RO stands for REps, SEts, and ROunds. Whether you want to build complex custom workouts from scratch or jump straight into pre-built routines, Resero adapts to your exact training style. What Makes Resero Different NEW! Premade Workout Library: Skip the setup and dive straight into training. Pick from professionally structured routines across Tabata, EMOM, HIIT, and combat sports or customize any library workout to fit your exact goals. NEW! Apple Watch Companion App: Complete wrist control. Start, stop, and skip intervals hands-free without touching your phone. Monitor real-time heart rate and active calories while contributing directly to your Apple Activity Rings and Apple Fitness details. Fully Customizable: Stop trying to force your routine into a rigid, basic timer app. Build your workout from scratch and customize every single interval, rep, set, and rest period exactly how you train. Smart Audio Cues: Never miss a transition or drown out your music. Resero automatically dims your audio background during cues, then seamlessly restores the volume. Fully Customizable: Build every interval, rep, set, and rest period with total precision. Runs in the Background: Change your music track or answer a text without interrupting your timer or audio cues. 100% Ad-Free: Zero video pop-ups, zero banner clutter, and zero mid-circuit interruptions. Automatic History Log: Completed sessions are saved automatically to your in-app calendar and synced with Apple Fitness to track your long-term consistency. Clean, High-Visibility Interface: Modern, ergonomic design featuring massive buttons built for effortless tapping while mid-workout and dripping with sweat. Built for Every Discipline: - HIIT & Tabata: Fine-tune high-intensity work-to-rest ratios. - Boxing & MMA: Set custom round lengths, rest periods, and warning bells. - Weightlifting & Calisthenics: Track precise lift sets and recover with exact rest countdowns. - EMOM & Circuit Training: Streamlined for solo gym sessions or leading full group fitness classes. How it works: 1) Choose or Build: Grab a ready-to-go routine from the workout library or build your own from scratch. 2) Train & Sync: Go hands-free on your iPhone or Apple Watch while tracking heart rate and calorie burns. 3) Track: Review your calendar history, close your activity rings, and build lasting consistency. Ditch the outdated timers. Download Resero today and give your workout the precision it deserves. --- Terms of Service: https://www.reseroapp.com/en/terms-of-service/ Privacy Policy: https://www.reseroapp.com/en/privacy-policy/ Legal Notice: https://www.reseroapp.com/en/legal-notice/

Screenshots

INTVL4 screens
Exercise Timer Resero4 screens

Verdict

The call

The clearest difference is in-app purchases: Exercise Timer Resero at none against INTVL's 1. Exercise Timer Resero also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. INTVL sells 1 in-app purchase, starting at $39.99 per year. Exercise Timer Resero asks for nothing beyond the download.

UpkeepUpdate frequency

INTVL ships an update fortnightly, Exercise Timer Resero every 3 weeks. The most recent releases landed on September 8, 2026 and September 9, 2026 respectively.

Scorecard2 real differences ยท 4 level
INTVL versus Exercise Timer Resero: the parameters behind the verdict, then further details
ParameterINTVLExercise Timer Resero
PriceFreeFree
Update frequencyFortnightly โ€” betterEvery 3 weeks
AdsYesNo โ€” better
In-app purchasesYesNo โ€” better
DevicesiPhoneiPhone, Apple Watch โ€” better
Requires iOS17.017.0
Further details โ€” not scored
Size87 MB112 MB
Age rating4+4+
DeveloperImperial Sales & Marketing GmbHImarum GmbH

In-app purchases

1 purchases

INTVL

Subscriptions1
  • INTVL Pro Annual7 Days trial$39.991 Year
None

Exercise Timer Resero

No in-app purchases

Questions

Is INTVL free?
INTVL is free to download, with in-app purchases available.
Is Exercise Timer Resero free?
Exercise Timer Resero is free to download, with no in-app purchases.
Do INTVL or Exercise Timer Resero have ads?
INTVL shows ads; Exercise Timer Resero does not.
Which is updated more often, INTVL or Exercise Timer Resero?
INTVL ships an update fortnightly, and Exercise Timer Resero every 3 weeks. Most recently, INTVL was updated on September 8, 2026 and Exercise Timer Resero on September 9, 2026.

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