Interval Timer vs Fortify Training
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Interval Timer
Organize your running and high-intensity interval training sessions with ease. Quickly set up custom time intervals for running, walking, warm-ups, and cool-downs. Receive voice and vibration notifications for interval changes, and enjoy background music playback.
- Intuitive design
- Customizable time intervals
- Warm-up and cool-down timers
- Voice and vibration notifications
- Background music support
- Foreground/background operation
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Interval Run is a running interval timer for iPhone and Apple Watch. Create run/walk intervals, sprint sessions, and HIIT workouts in seconds. Train with voice announcements and haptic cues, control workouts from Apple Watch, save sessions to Apple Health, and track your workout history. Choose from 25+ ready-made running workouts or build your own. Follow intervals from the Lock Screen and Dynamic Island, and focus on your run. 25+ READY-MADE RUNNING WORKOUTS • Explore run/walk workouts, running intervals, sprints, hill repeats, tempo runs, fartlek sessions, ladders, pyramids, and more • Find workouts for speed, endurance, recovery, and different training goals • Start any workout immediately or customize it to match your training • Save your favorites to My Workouts for quick access BUILD YOUR OWN INTERVAL WORKOUT • Create simple run/walk intervals or advanced multi-step workouts • Add warm-up, running, walking, recovery, rest, and cool-down sections • Set a custom duration for every step • Repeat intervals and complete workout blocks • Add custom cues to guide you through each workout step • Build sprint, HIIT, cardio, and structured running sessions • Save multiple workouts and reuse them anytime • Preview the complete workout before you start VOICE & HAPTIC INTERVAL CUES • Hear clear voice announcements at every interval transition • Feel haptic cues when it’s time to run, walk, recover, or rest • Keep your workout active while your iPhone is locked or the app is in the background • Follow your current interval from the Lock Screen and Dynamic Island with Live Activities • Listen to music, podcasts, or audiobooks while you train RUN WITH APPLE WATCH • Sync workouts to Apple Watch • Start, pause, and control workouts directly from your wrist • Run phone-free with your workouts ready on Apple Watch • Follow interval progress without repeatedly checking your phone • Track heart rate, distance, and active energy during your workout • Get haptic interval cues directly on your Watch • Save completed workouts to Apple Health TRACK YOUR TRAINING • Browse completed workouts in calendar and history views • Review workout duration, intervals, distance, and active energy • Look back at your running and interval training over time • Share your workout results • Export and restore backups of your workout data MADE FOR RUNNERS WHO TRAIN WITH INTERVALS Whether you’re starting with beginner run/walk intervals, adding speed work to your weekly training, preparing for a 5K or another race, or creating a challenging HIIT session, Interval Run keeps every interval clear from start to finish. Use it as a simple run/walk timer, a running interval timer for speed training, an Apple Watch interval timer for phone-free workouts, or a flexible workout builder for more advanced structured sessions. From beginner run/walk workouts to sprints, tempo runs, hill repeats, fartlek training, and custom multi-step sessions, Interval Run adapts to the way you train. Start with one of 25+ ready-made workouts or create your own. Interval Run handles the timing so you can focus on your training. Some features shown, including the full workout library, advanced workout creation, multiple saved workouts, and full workout history, require Interval Run Pro. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Fortify Training
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Worldwide coaching for Lifestyle Nutrition and Workout Programs. At Fortify Training, we understand that everyone is different. But the one thing that we can all agree on that can help you reach your goal, is consistency. Finding a balanced Nutrition plan and Workout program will allow you to enjoy your journey and keep you motivated to become your strongest and best self. Our Programs include - Customized Nutrition - Macros* Customized Nutrition - Meal Plan* Online Gym Training* Online Home Workout Training* 6 Week Summer Shred 30 Day Reset Nutrition Program *Requires a 3 month minimum, program renews month to month after the minimum with a 30 day notice required to discontinue. Terms of use: https://kahunas.io/terms-conditions Privacy policy: https://kahunas.io/privacy
Screenshots
Verdict
The clearest difference is device support: Interval Timer at 3 against Fortify Training's —. Fortify Training's advantage is iOS requirement (15.0 vs 26.0). On price and in-app purchases 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 $2.99 per month and Fortify Training sells 1 in-app purchase, starting at $149.00 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Interval Timer | Fortify Training |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (534 ratings) — better | — |
| Positive reviews | 21.1% of reviews | — |
| Number of ratings | 534 — better | — |
| Update frequency | Every 3 months | — |
| Ads | No | — |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | — |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 44 MB |
| Age rating | 4+ | 17+ |
| Developer | Roma Sosnovsky | Fortify Training LLC |
Bugs and requests
Interval Timer
Reported bugs
4 issues- Timer resets or freezes during workout
- Prompts not working when phone is locked or in pocket
- Unexpected interval changes or duration changes
- Compatibility issues with music playback
Requested features
6 requests- Option to pause/resume timer
- Larger time remaining display
- Apple Watch app
- Ability to play audio prompts even with screen off
- More interval options (run/walk/jog)
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- Congratulatory audio cue at the end
Fortify Training
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Interval Timer
- Interval Run Pro Monthly$2.991 Month
- Interval Run Pro Annual7 Days trial$19.991 Year
- Full Version$2.99
Fortify Training
- Customized Nutrition$149.001 Month
Questions
Is Interval Timer free?
Is Fortify Training free?
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