Comparison

Interval Timer vs Timeline

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

Timeline

This app provides a highly customizable interval timer for various activities, including fitness, exercise, and productivity. Create and manage timer sequences with intuitive gestures, utilize ready-made templates, and share your routines with others. Enjoy spoken prompts and motivational messages to stay on track.

Highlights
  • Flexible interval timer design
  • Intuitive gesture-based timer creation
  • Ready-made schemes and templates
  • Manage and arrange timers by category
  • Share timers with friends or clients
  • Spoken timers and motivational messages
  • Continuous alarm option
Features
Read full description

Timeline is the most flexible interval timer. Ideal for fitness, running, exercise, productivity and more. It gives you intuitive, powerful and practical controls to run timer sequences or to create your own routines. • FLEXIBLE BY DESIGN Whether it is for sports such as fitness, running, cycling, high-intensity training, tabata, circuit training, yoga and more. Or if you want to time your daily routines, stay productive, stay focused or need to clock your tasks. Timeline has got you covered. • CREATE TIMERS USING INTUITIVE GESTURES You can create your own sequences of timers quickly using intuitive gestures. There are no difficult menus and options to go through. Just swipe, pinch, pan, tap and group to build any sequence you can imagine. What you see is what you get. You can always edit your timers, even after you have started playing them. • READY-TO-USE SCHEMES AND TEMPLATES Start right away with ready-made schemes and templates. Get into running with 56 weeks worth of training schemes to run from 0 to 5 km up to a full marathon. Use or create your own templates as the starting point for your custom timers. You can import ready-made timers, build your own on your computer or open them directly from websites. • MANAGE AND ARRANGE YOUR WAY Whether you want to arrange your timers per category, or want to separate your clients from your personal timers. Timeline gives you the freedom to manage and arrange your timers the way you want. Creating, moving or copying timers and folders are all only a few taps away. • SHARE WITH FRIENDS OR CLIENTS Share any number of timers and folders at once with your friends or clients. You can also publish them on your website so your audience can directly open them in the Timeline app. • SPOKEN TIMERS AND MOTIVATION IN YOUR LANGUAGE Have your timers and countdown spoken out loud in your own language. You don't have to look at your screen and can keep your device locked or in your pocket. Spoken motivational messages support you through your extensive workouts and sessions. • CONTINUOUS ALARM OPTION TO NEVER MISS A MOMENT Sometimes it is critical to know the end of your timers. You don't need to stay with your device all the time. Just turn on the continuous alarm. It works like your alarm clock and will pause your timer until you have confirmed the alarm. • PRACTICAL FEATURES YOU WILL LOVE Timeline is a premium-quality interval timer app. You can play your own music through Timeline or via your preferred music app. Timeline works fully in the background and can alert you with sounds, vibrations and speech. Run it in the foreground and it will keep your screen turned on if you want. Resume timers where you previously left off. Choose from different color themes. Get personal assistance from the developer. Plus more practical features to ensure you'll enjoy using Timeline. • UPGRADE TO TIMELINE PRO You can use all main features of Timeline completely free. However, to create more than 5 timelines or to share your timers, please upgrade to Timeline Pro with a one-time purchase. You thereby also support an individual developer. Timeline is designed to be your flexible interval training timer. Download Timeline now and start achieving your personal goals.

Screenshots

Interval Timer4 screens
Timeline4 screens

Verdict

The call

The clearest difference is ads: Timeline at none against Interval Timer's shown. Timeline also leads on review sentiment (100% vs 73%) and monetization model (free vs free with in-app purchases). Interval Timer's advantage is update cadence (every 9 days vs every 22 months) and ratings volume (19K vs 9). On price, rating, 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

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 Timeline sells 1 one-off in-app purchase. 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 4.6 for Timeline. That said, the two scores are not equally well evidenced: Interval Timer has 19K ratings behind it against 9, 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 100% of Timeline's.

UpkeepUpdate frequency

Interval Timer ships an update every 9 days, Timeline every 22 months. The most recent releases landed on October 9, 2026 and September 22, 2026 respectively.

Scorecard5 real differences · 5 level
Interval Timer versus Timeline: the parameters behind the verdict, then further details
ParameterInterval TimerTimeline
PriceFreeFree
Rating4.5 (19K ratings)4.6 (9 ratings) — better
Positive reviews72.9% of reviews100.0% of reviews — better
Number of ratings19K — better9
Update frequencyEvery 9 days — betterEvery 22 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size143 MB9 MB
Age rating4+4+
DeveloperNEO PIXEL LABS PTE. LTD.Fly Your Vision B.V.

Customer experience

Interval Timer

All ratings19,032 ratings
Positive88.4%
Neutral3.3%
Negative8.3%
Written reviews1,595 reviews
Positive72.9%
Neutral5.8%
Negative21.3%

Timeline

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Timeline

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
1 purchases

Timeline

One-time1
  • Timeline Interval Timer Pro$4.99

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is Timeline free?
Timeline is free to download, with in-app purchases available.
Which has better reviews, Interval Timer or Timeline?
Timeline is rated higher. Interval Timer averages 4.5 out of 5 from 19K ratings, while Timeline averages 4.6 from 9 ratings.
Do Interval Timer or Timeline have ads?
Interval Timer shows ads; Timeline does not.
Which is updated more often, Interval Timer or Timeline?
Interval Timer ships an update every 9 days, and Timeline every 22 months. Most recently, Interval Timer was updated on October 9, 2026 and Timeline on September 22, 2026.

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