Comparison

Interval Timer vs Phyzseek

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

Head to head
About

Interval Timer

This app helps you manage workout intervals with customizable work and rest periods. It runs in the background and allows music playback, with options to save settings and share progress. Integrates with Apple Health for heart rate monitoring.

Highlights
  • Customizable sets, intervals, and rest times
  • Runs in background and with screen locked
  • Music playlist integration
  • Save settings as templates
  • Apple Health integration for heart rate
  • Post workouts to social media
Features
Read full description

***Free and reliable. Perfect for use at home, at the track or in the gym. We’re proud to introduce this handy little app that helps you keep track of your work and rest periods during workouts. Whether your into cycling, running, lifting weights, exercise, workout, stretching, boxing, MMA or HIT, this interval timer will prove to be an invaluable asset to you. Running foreground, background or with device locked, this reliable app allows you specify an overall time as well as program High/Low intensity interval and rest time between sets. Produced by Polycents! Key Features: - Customizable sets, high/low intensity interval and rest for your own need - Retina display, iOS4 and multitasking - Continue to run even when screen is locked - Play your song or playlist during your workout - Post your workout to Facebook or Twitter - Save settings as templates Customizable Features: - Number of Sets - Countdown Time - Set Time - Low Interval time - High Interval time - Rest Time - First Interval (low or high) - Sound Volume - Timer Sounds - Auto Lock - Vibrate - Pause during Rest - Playlist - New Each Set APPLE HEALTH: -Interval Timer can use Apple Health to show heart rate in Apple Watch App. # Subscription Details # - Monthly and annual subscriptions are available. - Payment will be charged to your iTunes account at confirmation of purchase. - Your subscription will automatically renew unless auto-renew is disabled at least 24 hours before the end of the current subscription period. - Automatic renewals will be charged at the same price you were originally charged for the subscription. - Subscriptions can be managed by going to Account Settings on the App Store after purchase. Terms of Use: https://www.iubenda.com/terms-and-conditions/18915396 Privacy Policy: https://www.iubenda.com/privacy-policy/18915396

About

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.

Highlights
  • Doctor-developed HIIT workouts
  • Calorie and fat burning
  • Muscle development
  • Personalized exercise modifications
  • Integrated timers and pacer
  • Heart rate monitoring
  • Workout result tracking
Features
Read full description

Burn calories & fat, build muscle w/daily, doctor-developed, short-duration, high intensity workouts that are fun but challenging. Capture & track results w/1-touch. Social network, heart monitor & Pacer will motivate. Compete w/friends. **Burn fat & calories, promote balanced muscle development and improve functional longevity with Phyzseek’s doctor-developed, Sustainable High Intensity Functional Training (SHIFT) program **Easy-to-follow daily workouts (Endurance, Intervals & Lactic Loading) that are fun, variable and short duration but highly effective at transforming your metabolism in multiple ways **Beginner, intermediate & advanced high intensity workouts; Progress through increasingly longer duration and higher intensity regimens **Detailed videos are provided for every exercise so that you can learn and maintain proper form to reduce the chances of injury **Workouts are easily personalized with alternative exercises and modifications just in case you have pre-existing injuries or need to substitute exercises that are more specific to your level of fitness **Timers (Stopwatch, AMRAP, Intervals) are automatically provided with each workout **Even when you’re working out alone, a user-programmed pacer constantly motivates you like a personal trainer to tell you what exercise and what rep you need to be doing to maintain intensity, achieve your desired result, and transform your body **Color-coded heart rate monitor makes sure you are in your age-adjusted and fitness-based target zone so that you keep your intensity within the most effective range to get results **One-touch feature logs, saves and tracks all relevant workout results and health metrics **Easily compare your results to people from around the world using proprietary performance metrics and graphs **View and track your personal fitness progress (PhyzioLevel, Calories Burned, Weight, Resting Heart Rate, Intensity) with simple-to-use graphical interface **Compete with friends and peers to motivate you to work out consistently and with intensity by seeing where you rank on Phyzseek’s multiple leaderboards **Be held accountable, get your competitive juices flowing and get congratulated on your achievements when you post your progress and interact with your PhyzTeam QUICK START GUIDE http://phyzseek.com/sites/default/files/Quick%20Start%20Guide%208-8-16.pdf **The app includes two versions of Auto-Renewable subscriptions: 1-month and 1-year subscription for premium features of the app Premium features include access to: a) Workout dashboard (where the user can review their performance of selected workout); b) Fitness dashboard (where the user can review their health progress with selected period of time); c) Leaderboard (which is essentially the list of top users) **1-month and 1-year subscription cost $4.99 and $49.99 respectively. **Payment will be charged to iTunes Account at confirmation of purchase **Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period **Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal **Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase **No cancellation of the current subscription is allowed during active subscription period **Privacy Policy http://phyzseek.com/privacy and Terms of Use http://phyzseek.com/terms **Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication

Screenshots

Interval Timer4 screens
Phyzseek4 screens

Verdict

The call

The clearest difference is monetization model: Interval Timer at free with in-app purchases against Phyzseek's subscription. Interval Timer also leads on ratings volume (19K vs 86) and update cadence (every 9 days vs every 5 weeks). Phyzseek's advantage is ads (none vs shown) and review sentiment (84% vs 73%). On price, rating 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Interval Timer sells 6 in-app purchases, starting at $0.99 per month and Phyzseek sells 3 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Interval Timer against 4.4 for Phyzseek. That said, the two scores are not equally well evidenced: Interval Timer has 19K ratings behind it against 86, so its average is the more settled of the two. Written reviews are what separate them: 73% of Interval Timer's written reviews are positive against 84% of Phyzseek's.

UpkeepUpdate frequency

Interval Timer ships an update every 9 days, Phyzseek every 5 weeks. The most recent releases landed on September 30, 2026 and September 18, 2026 respectively.

Scorecard7 real differences · 3 level
Interval Timer versus Phyzseek: the parameters behind the verdict, then further details
ParameterInterval TimerPhyzseek
PriceFreeFree
Rating4.5 (19K ratings) — better4.4 (86 ratings)
Positive reviews72.9% of reviews83.8% of reviews — better
Number of ratings19K — better86
Update frequencyEvery 9 days — betterEvery 5 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS13.0 — better16.0
Further details — not scored
Size143 MB19 MB
Age rating4+4+
DeveloperNEO PIXEL LABS PTE. LTD.WellFit Holdings LLC

Customer experience

Interval Timer

All ratings19,032 ratings
Positive88.4%
Neutral3.3%
Negative8.3%
Written reviews1,592 reviews
Positive72.9%
Neutral5.8%
Negative21.4%

Phyzseek

All ratings86 ratings
Positive83.7%
Neutral3.5%
Negative12.8%
Written reviews68 reviews
Positive83.8%
Neutral0.0%
Negative16.2%

User reviews

Interval Timer

From 19K App Store ratings

What we love

  • 🚀 Free version works well
  • 👍 Customizable intervals and timers
  • 👍 Flexible for different workouts
  • 👍 Easy to use and set up
  • 👍 Provides visual and audio cues

Room to improve

  • 🐛 Timer issues (stops, loses time)
  • 🔋 Drains battery when used
  • 💰 Expensive subscription model
  • 📢 Intrusive ads
  • 🔒 Incompatible with other apps

Phyzseek

From 86 App Store ratings

What we love

  • 👍 Great workouts
  • 💪 Effective for fitness
  • 🚀 Efficient workouts
  • 📈 Tracks progress well
  • 💡 Varied exercises

Room to improve

  • 💸 Charged for free trial
  • 💳 Subscription deducted early
  • ❌ App not working
  • 🚫 Login issues
  • 👴 Not for older users

Bugs and requests

Interval Timer

Reported bugs

3 issues
  • Ads block functionality
  • App freezes or crashes
  • Timer doesn't work in background

Requested features

5 requests
  • Add notes to workouts
  • Provide workout history and analytics
  • Allow syncing with Apple Health
  • Improve Apple Watch integration
  • Add more customization options

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

In-app purchases

6 purchases

Interval Timer

Subscriptions6
  • Plus - 1 Month$0.991 Month
  • Premium - 1 Month$1.991 Month
  • Plus - 1 Month$1.991 Month
Show 3 more
  • Premium - 1 Month$2.991 Month
  • Plus - 1 Year2 variants$4.991 Year
  • Premium - 1 Year7 Days trial2 variants$9.991 Year
3 purchases

Phyzseek

Subscriptions2
  • Phyzseek subscription$12.991 Month
  • Phyzseek subscription$99.991 Year
One-time1
  • Workout Stats until midnight$0.99

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is Phyzseek free?
Phyzseek is free to download, with in-app purchases available.
Which has better reviews, Interval Timer or Phyzseek?
Interval Timer is rated higher. Interval Timer averages 4.5 out of 5 from 19K ratings, while Phyzseek averages 4.4 from 86 ratings.
Do Interval Timer or Phyzseek have ads?
Interval Timer shows ads; Phyzseek does not.
Which is updated more often, Interval Timer or Phyzseek?
Interval Timer ships an update every 9 days, and Phyzseek every 5 weeks. Most recently, Interval Timer was updated on September 30, 2026 and Phyzseek on September 18, 2026.

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