Phyzseek vs Simple Interval Timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Phyzseek
Engage in doctor-developed, high-intensity interval training designed to burn fat, build muscle, and improve fitness. Track progress, compete with friends, and stay motivated with personalized workouts and real-time feedback.
- Doctor-developed HIIT workouts
- Calorie and fat burning
- Muscle development
- Personalized exercise modifications
- Integrated timers and pacer
- Heart rate monitoring
- Workout result tracking
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Phyzseek is the doctor-designed HIIT app. One advanced workout a day, around 20 minutes, designed by a physician and ACSM-certified trainer, plus run tracking for your days off. YOUR WORKOUT IS ALREADY WAITING The PHYZWOD is Phyzseek's workout of the day. No planning. Open the app and press READY. - A new advanced workout every day: intervals, AMRAPs, ladders, timed rounds and runs - Programmed so your different energy systems are trained in balance - Each exercise switches to the equipment you own, with an easier version one tap away - A video demo and coaching cues for every exercise - Miss a day? The last 12 days stay open THE PACER Set the result you want to beat, a time or a number of reps: your own record, a competitor's result, or a target rank. The pacer shows where you should be at every moment, so you push from the first rep to the last. Voice cues and a bell keep your eyes off the screen. LIVE HEART RATE Connect a Bluetooth chest strap or a watch that broadcasts heart rate. Your heart rate shows in the color of your zone, with percent of max. Zones are set from your own maximum heart rate. After the workout, see your heart-rate graph and how fast your heart rate recovers. COMPETITORS AND LEADERBOARDS Add competitors and see their results ranked with yours on every workout. Get an alert when a competitor trains. Leaderboards for PhyzioLevel, workouts, calories and PhyzTest, by age and gender. ONE FITNESS SCORE PhyzioLevel ranks you on Intervals, Lactic Loading and Endurance workouts as a percentile against other athletes. It rises as your results improve, which is a measure of fitness. Dashboards chart it alongside intensity, calories, weight and resting heart rate. MY RUNS Track runs on your days off: GPS distance, mile splits, pace, heart-rate graph, recovery and heart-rate drift, with a runs leaderboard. TRAIN YOUR WAY Not ready for the PHYZWOD? Beginner and intermediate levels, no-equipment workouts, and build-your-own workouts. PHYZTEST measures your mile, push-ups, sit-ups, squats and burpees so you can see progress. HEART-RATE MONITOR OPTIONAL Everything works without one. Heart-rate features need a Bluetooth chest strap or a broadcasting watch. Apple Health access is optional. SUBSCRIPTION New members get a 30-day free trial with no card required. After the trial, one workout each week stays free. Full access is an auto-renewing subscription: $12.99 per month or $99.99 per year. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Manage or cancel in your Apple Account settings. Phyzseek is for adults 18 and over. High-intensity exercise is demanding; check with your doctor before starting. Individual results vary. Terms of Service: https://prod.phyzseek.com/terms Privacy Policy: https://prod.phyzseek.com/privacy Support: support@phyzseek.com
Simple Interval Timer
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Flexy Timer – The Ultimate Minimalist Workout Timer Flexy Timer is a sleek, intuitive workout timer designed for those who value focus and simplicity. With a clean, distraction-free interface, it helps you stay in the zone and get the most out of every workout. Perfect for HIIT, Tabata, CrossFit (AMRAP/EMOM/WOD), Boxing, Circuit Training, Sprint Intervals, Yoga, and Kettlebell Workouts. Flexy is the perfect tool to help you structure your time and stay on track—whether you're working out, meditating, studying, or managing your daily routines. Here’s how Flexy can support you: -Workouts & Exercise: Easily time your gym sessions, interval runs, CrossFit, HIIT, and Tabata workouts. -Yoga & Meditation: Set calming intervals to guide your yoga practice or meditation sessions with precision. -Focus & Productivity: Use Flexy as a Pomodoro timer to stay productive while studying, reading, or working. -Custom Routines: Create and save personalized interval timers for any activity—whether it's fitness, focus, or relaxation. No matter your goal, Flexy Timer makes timing simple, flexible, and effective. Train smarter. Stay focused. Let Flexy Timer be your easy-to-use workout companion! Flexy Timer Premium Features (In App Purchase): * Quick Start – Get moving in seconds. * Custom Timers – Personalize intervals to match your training. * Curated Music – Stay motivated with handpicked soundtracks. * Workout Log – Track and analyze your progress. In-App Purchase: ——All features of Simple Interval Timer are available for free during the first three uses. ——After that, a monthly or yearly subscription is required to continue using the timers. Privacy Policy: https://pdfhost.io/v/72mty7BYHd_Privacy_Policy_-_Simple_Interval_Timer__Flexy Terms of Use: https://pdfhost.io/v/3543sYv6Cr_Terms_of_Use_-_SEAD_Fitness
Screenshots
Verdict
The clearest difference is update cadence: Simple Interval Timer at weekly against Phyzseek's every 5 weeks. 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
Both are free to download. Phyzseek sells 3 in-app purchases, starting at $12.99 per month and Simple Interval Timer sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
Phyzseek ships an update every 5 weeks, Simple Interval Timer weekly. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.
| Parameter | Phyzseek | Simple Interval Timer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (87 ratings) — better | — |
| Positive reviews | 84.1% of reviews | — |
| Number of ratings | 87 — better | — |
| Update frequency | Every 5 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | — |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 11 MB | 23 MB |
| Age rating | 17+ | 4+ |
| Developer | WellFit Holdings LLC | 阳 童 |
Bugs and requests
Phyzseek
Reported bugs
5 issues- App not working
- Cannot log in
- Login failed
- Forgot password not working
- Facebook login not accepted
Requested features
3 requests- Consider older users' fitness needs
- Clarify free trial terms
- Improve login functionality
Simple Interval Timer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Phyzseek
- Phyzseek subscription$12.991 Month
- Phyzseek subscription$99.991 Year
- Workout Stats until midnight$0.99
Simple Interval Timer
- Monthly Premium3 Days trial$0.991 Month
- Yearly Premium3 Days trial$4.991 Year
Questions
Is Phyzseek free?
Is Simple Interval Timer free?
Do Phyzseek or Simple Interval Timer have ads?
Which is updated more often, Phyzseek or Simple Interval Timer?
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