Interval Timer vs TimerFlex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Interval Timer
This versatile timer assists with various fitness routines, including HIIT, Tabata, and boxing. It also functions as a productivity timer for tasks like Pomodoro. Easily configure intervals, sets, and rest periods for personalized workouts.
- HIIT and Tabata workout timer
- Boxing and martial arts round timer
- Productivity and Pomodoro timer
- Customizable interval and set configurations
- Templates for quick setup
- Supports various fitness exercises
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Nice and simple Interval Timer for your Workouts. Perfect for HIIT, Tabata, Boxing, WOD, Crossfit and Fitness. Tabata Timer: Interval Timer for HIIT Workout Simple and convinient interval workout timer app for high intensity interval training (HIIT timer). Perfect stopwatch or countdown timer for your workouts. Fitness Timer for Interval Training This Tabata Timer is perfect for home workouts and daily workout routines for all your main muscle groups. You can use this circuit timer at gym and for home workout. In just a few minutes a day, you can build muscles and keep fitness with just your body weight. Use this hiit timer for fitness training for high intensity interval training at home or at gym. Boxing Timer - Round Timer for Martial Arts This workout timer can be used as Boxing Timer. You can set the number of boxing rounds, length of each round and rest interval. Use boxing timer for martial arts. Boxing timer can save templates for different fighting sports: Boxing, MMA, Kickboxing, Karate, Judo, Taekwondo, Jujutsu, Muay Thai, Aikido, Krav Maga, Capoeira, Wrestling etc. Productivity Timer - Pomodoro Timer You can even use this timer as a productivity timer or pomodoro timer to focus on your work tasks. Stay focused and productive with pomodoro timer. Configure and save pomodoro preset to use this productivity timer as pomodoro timer. Home Workout Timer - 7 Minute Workout Looking for home workout timer? This interval timer is perfect for 7 minute workout. Do you like 7 minute abs workout, abs workout at home, home workout with no equipment? This tabata timer will be useful for home exercises, home training and fitness at home. Warmup Timer - Round timer for Stretching and Morning Exercises Warmup and stretching is an important part of workout. If you do stretching and morning exercises every day, use this Warmup timer. This fitness timer for morning exercises has templates feature that allows you to start morning exercises in 1 click. Kitchen timer - Steak Timer, Egg Timer, Cooking Timer Going to cook a steak? Have a lot of cooking recipes in your kitchen book? Use this timer as kitchen timer. Kitchen timer can be used as steam timer, egg timer. Egg timer is perfect for egg cooking, steak timer will help to cook a steak. You can use this cooking timer for any cooking recipes in your kitchen book. Easy configuration - fast timer setup - Set warmup seconds time - Configure seconds timer for workout interval - Configure rest interval seconds - Enter amount of workout sets - Click start button Perfect for all exercises This timer can be uses as: workout timer, interval timer, tabata timer, hiit timer or circuit timer for your workouts. Timer is perfect for all kinds of exercises, including: - Tabata workouts - Boxing rounds - HIIT workouts (High Intensity Inverval Training) - Home Workout - Gym Workout - Training with weights - Bodyweight exercises - 7 minute abs workout - Weight loss workout - 5K Run - Interval Running - Six pack abs workout - Yoga and Meditation - WOD - TRX - Cardio exercises - Calisthenics - Stretching exercises - Kettlebells - Crossfit - Cycling or Exercise bike - Circuit workout - or any other high intensity interval training MAIN FEATURES: - Nice and simple ui - Fast timer setup - Templates to save your settings Try Tabata Timer: Interval Timer for HIIT Workout now!
TimerFlex
This app uses AI to instantly create custom workout timers from whiteboard photos or text descriptions. It offers various pre-built formats, real-time heart rate tracking, and detailed workout history. Advanced features like Apple Watch sync and unlimited AI generation are available with a subscription.
- AI workout generation from photos/text
- Apple Watch sync with haptic cues
- Real-time heart rate and calorie tracking
- 5 purpose-built workout formats (For Time, AMRAP, EMOM, Tabata, Custom)
- 1RM calculator
- Voice coach and audio cues
- Workout history and monthly stats
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TIMERFLEX – INTERVAL & WOD TIMER The smartest workout timer for serious athletes. Snap a photo of any whiteboard. Describe your session in plain text. TimerFlex builds the entire workout — rounds, intervals, rest — instantly with AI. ——— AI WORKOUT GENERATOR Point your camera at a gym whiteboard or type your workout. AI reads it and sets up the complete timer in seconds. No programming. No fumbling. Just press go. APPLE WATCH SYNC Full timer on your wrist the moment you start. See rounds, phases, and time remaining without touching your phone. Haptic cues keep you on pace. Start and pause from your wrist. REAL-TIME HEART RATE & CALORIES Live BPM and active energy during every session via HealthKit. Know exactly how hard you're working without leaving the timer. 5 PURPOSE-BUILT FORMATS Not a generic countdown. Each format knows exactly what it's doing: • For Time — race the clock, finish as fast as possible • AMRAP — maximum rounds in a fixed window • EMOM — new movement every minute, automatically • Tabata — 20s work, 10s rest, 8 rounds, handled • Custom — chain any combination into one session No manual resets. No counting rounds in your head. TimerFlex handles all of it. 1RM CALCULATOR Built into every setup screen. Enter your max and get instant percentage breakdowns for every lift. VOICE COACH & AUDIO CUES Countdown calls, phase announcements, halfway alerts. Eyes on your reps, not your screen. LARGE DISPLAY & LANDSCAPE MODE Numbers big enough to read from across the gym. Rotate for maximum visibility mid-set. WORKOUT HISTORY & MONTHLY STATS Every session logged automatically with mood, duration, and notes. Monthly Wrapped gives you your longest streak, total time, and favorite format so you can see your training compound over time. SAVE, FAVORITE & REBUILD Save any workout as a template. Favorite your go-to sessions. Retry any past workout in one tap. NOTES & PHOTO ATTACHMENTS Attach whiteboard photos or text notes to any session. Your workout context, always with your data. EXPORT & BACKUP Export your full history as CSV or JSON. Your data, your way, always portable. ——— BUILT FOR • CrossFit WODs & box sessions • HYROX training blocks • HIIT & interval circuits • Tabata (20s work / 10s rest) • EMOM (Every Minute on the Minute) • AMRAP (As Many Rounds As Possible) • Home gym, garage & travel workouts • Benchmark WODs: Murph, Cindy, Fran ——— TIMERFLEX PRO Unlock unlimited AI Generator, Custom Workout Builder, premium voices and sounds, heart rate insights, Monthly Wrapped, photo notes, workout export, Apple Watch sync, and zero ads. Monthly · Quarterly · Annual — your choice. ——— Privacy Policy: https://plainworks.co/timerflex/privacy-policy Terms of Use: https://plainworks.co/timerflex/terms
Screenshots
Verdict
The clearest difference is review sentiment: TimerFlex at 100% against Interval Timer's 29%. TimerFlex also leads on update cadence (weekly vs every 5 months). Interval Timer's advantage is rating (4.5 vs 3.0) and ads (none vs shown). On price, in-app purchases, monetization model 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
Both are free to download. Interval Timer sells 3 in-app purchases, starting at $1.99 per month and TimerFlex sells 7 in-app purchases, starting at $1.49 per 7 days. Whichever you choose, the download price is not the number that matters.
Interval Timer holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Interval Timer has 149 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 29% of Interval Timer's written reviews are positive against 100% of TimerFlex's, so the app with the better star average is not the one people write more warmly about.
Interval Timer ships an update every 5 months, TimerFlex weekly. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.
| Parameter | Interval Timer | TimerFlex |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (149 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 29.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 149 — better | 2 |
| Update frequency | Every 5 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 12.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 11 MB | 79 MB |
| Age rating | 4+ | 12+ |
| Developer | DMYTRO DOLOTOV | Plainworks Teknoloji Limited Sirketi |
Customer experience
Interval Timer
TimerFlex
In-app purchases
Interval Timer
- 1 Month Access$1.991 Month
- Lifetime Access -50%$4.99
- Lifetime Access$9.99
TimerFlex
- Weekly subscription$1.497 Days
- TimerFlex Monthly$3.491 Month
- 3 Months subscription$8.493 Months
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- TimerFlex Annual Offer$12.991 Year
- TimerFlex Annual3 Days trial$24.991 Year
- Ad-Free$0.99
- TimerFlex Lifetime$34.99
Questions
Is Interval Timer free?
Is TimerFlex free?
Which has better reviews, Interval Timer or TimerFlex?
Do Interval Timer or TimerFlex have ads?
Which is updated more often, Interval Timer or TimerFlex?
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