Comparison

Interval Timer vs Phaze

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

Phaze

Features
Read full description

Unlock Peak Performance While Travelling with Phaze Phaze is your ultimate travel performance coach, designed to help you stay at your best, no matter where in the world you go. Created by leading chronobiologists and sleep experts, Phaze optimises your schedule, minimises jet lag, and ensures you’re mentally and physically prepared for the moments that matter. Key Features: - Personalised Activity Schedule - Phaze customises your daily itinerary based on your physiology and travel needs. By aligning your schedule with your body’s circadian rhythms, it optimises when to sleep, eat, and engage in activities- so you feel and perform your best in your new destination. - Jet Lag Management - Beat jet lag with science-backed strategies. Phaze’s proprietary algorithm, developed by chronobiologists, helps reset your internal clock. With an integrated light scanner, it guides your light exposure to accelerate your body’s adjustment, reducing fatigue and enhancing recovery. - Performance Planning - Have a big event, business meeting, or competition while travelling? Enter key dates, and Phaze will create a customised plan to ensure you’re at peak performance exactly when you need to be- whether it’s a presentation, race, or once-in-a-lifetime sightseeing experience. - User-Friendly Interface - Navigate your personalised schedule with ease. Make real-time adjustments, set reminders for crucial activities, and stay on top of your travel itinerary - all in one intuitive app. - Expert Travel Insights - Access science-backed tips on optimising energy levels, hydration, and recovery, so you can make the most of every trip. - Global Time Zone Support - Seamlessly manage your schedule across multiple time zones, ensuring you’re always prepared, no matter where you land. Download Phaze today and travel smarter. Minimise jet lag, maximise performance, and arrive ready to take on the world! This app integrates with Apple HealthKit.

Screenshots

Interval Timer4 screens
Phaze4 screens

Verdict

The call

The clearest difference is in-app purchases: Phaze at none against Interval Timer's 8. Phaze also leads on ads (none vs shown). Interval Timer's advantage is update cadence (every 9 days vs every 6 weeks) and device support (4 vs 2). On price 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. Phaze asks for nothing beyond the download.

UpkeepUpdate frequency

Interval Timer ships an update every 9 days, Phaze every 6 weeks. The most recent releases landed on October 3, 2026 and September 25, 2026 respectively.

Scorecard5 real differences · 5 level
Interval Timer versus Phaze: the parameters behind the verdict, then further details
ParameterInterval TimerPhaze
PriceFreeFree
Rating4.5 (19K ratings) — better—
Positive reviews72.9% of reviews—
Number of ratings19K — better—
Update frequencyEvery 9 days — betterEvery 6 weeks
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS13.0 — better16.2
Further details — not scored
Size143 MB60 MB
Age rating4+17+
DeveloperNEO PIXEL LABS PTE. LTD.Phaze Shift Ltd

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

Phaze

Not enough reviews yet to summarise bugs or requests.

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
None

Phaze

No in-app purchases

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is Phaze free?
Phaze is free to download, with no in-app purchases.
Do Interval Timer or Phaze have ads?
Interval Timer shows ads; Phaze does not.
Which is updated more often, Interval Timer or Phaze?
Interval Timer ships an update every 9 days, and Phaze every 6 weeks. Most recently, Interval Timer was updated on October 3, 2026 and Phaze on September 25, 2026.

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