Comparison

Gymboss Interval Timer vs Pacer Fitness

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

Head to head
About

Gymboss Interval Timer

This app provides a customizable interval timer for various workouts, allowing users to set single or multiple work and rest periods. It offers extensive customization options for alarms, program saving, and display, ensuring a tailored timing experience for any fitness routine.

Highlights
  • Programmable interval timer
  • Unlimited intervals and rounds
  • Save and manage unlimited programs
  • Visual, audible, and vibrate alarms
  • Music access and dimming
  • Customizable display and background
Features
Read full description

The Gymboss Interval Timer app is a programmable interval timer perfect for any workout where timing is needed to time work and/or rest periods. You can time a single time interval, or multiple time intervals, and repeat them as many times as you wish. Perfect for running, HIIT, tabata, crossfit, home workouts, mma, boxing, weight lifting, stretching, or any other workout that requires timing. This app incorporates all of the recommendations we have received over the years from our users to bring you the best app possible. Thank you for your input!!! Customizable Features: - save programs to your iCloud Drive account - unlimited intervals - up to 99 rounds/repeats - unlimited saved programs - music access directly from the app - music dims for alarm - multiple alarm sounds - visual, audible, and vibrate alarm options - social sharing options - prevent sleep feature - screen lock - customizable, moving background colors - large, easy to read display - landscape mode option - set different alarms for each interval - change the end of program alarm - label activity names for each interval to be displayed - built in stopwatch - ability to make rounds box bigger or smaller - copy an entire program option Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Pacer Fitness

This app provides a beautiful and intuitive interval timer to help you maximize your workouts. Easily create, customize, and share timers with friends, and enjoy seamless music integration. It's designed to help you reach your fitness goals faster.

Highlights
  • Intuitive interval timer visualization
  • Easy timer creation and customization
  • Apple Watch integration
  • Timer sharing with friends
  • Autostart workout feature
  • Seamless music integration
  • Featured workouts for beginners
Features
Read full description

REACH YOUR FITNESS GOALS FASTER WITH PACER Using an interval timer is the best way to get the most out of your fitness time. Whether training for a sport or working toward specific fitness goals, interval training is a proven method to help you achieve your goals. TIMER SCREEN IS BEAUTIFUL & INTUITIVE Timer visualization displays the entire timeline of your workout with color-coded interval bars that transition from right to left as you exercise. Timer screen works seamlessly in portrait and landscape. CREATING TIMERS IS EASY AND FUN Intuitive gesture controls empower you to make and share timers in mere seconds, not fumbling through multiple screens. Swipe up and down to change duration. Tap and swipe up and down to increase or decrease intensity. You can name each interval to match your exercise. Apple Watch® Support • Timers are automatically synced from your phone to your watch any time you create, edit, re-order or delete timers from your iPhone® • Watch settings are just a swipe away. Swipe right from any open timer to access settings. • Integration with Health and Activity (see "Sync with Health" from settings on the watch app) • Full interval alert options with haptics & sound options including: Melodic, Arcade, US English (female) & US English (male) SHARE TIMERS WITH FRIENDS Pacer supports deep linking and timer sharing. Open a timer and tap share to send to a friend via AirDrop®, your favorite messaging app or share with your followers on social media. Recipients with Pacer will be able to open and save your timers to their devices. AUTOSTART Pacer knows when you are holding your phone and when you set it down. With Autostart enabled, once you open a timer just set it down to start it. Pick it up again to pause. Visit Settings in the app to enable Autostart. SEAMLESS MUSIC INTEGRATION Play music from your favorite music app with no interruptions. Pacer will play audio cues over your music and you can even adjust the volume independent of your music volume. No matter what music you’re listening to, the audio cues won’t be too loud or too quiet. FEATURED WORKOUTS HELP YOU GET STARTED If you’re new to interval training, check out our featured workouts. Pacer can be used for many different fitness disciplines, so take a peek at what the pros are doing. SWIPE TO DELETE - On Timers screen, swipe left on any timer to expose share, edit and delete REORDER TIMERS - Long press a timer and then drag-and-drop to customize timer position Pacer is created and maintained with the help of a NASM™ certified personal trainer.

Screenshots

Gymboss Interval Timer4 screens
Pacer Fitness4 screens

Verdict

The call

Gymboss Interval Timer and Pacer Fitness both sit at 4.7 stars, but that hides the real split: 61% of Pacer Fitness's written reviews are positive against 37% of Gymboss Interval Timer's. Pacer Fitness also leads on update cadence (every 9 days vs every 5 weeks) and iOS requirement (12.0 vs 15.0). On price, rating, ratings volume and ads 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. Gymboss Interval Timer sells 3 in-app purchases, starting at $1.99 per year and Pacer Fitness 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 — 4.7 for Gymboss Interval Timer against 4.7 for Pacer Fitness. Both are backed by a comparable volume of ratings — 840 and 306 respectively. Written reviews are what separate them: 37% of Gymboss Interval Timer's written reviews are positive against 61% of Pacer Fitness's.

UpkeepUpdate frequency

Gymboss Interval Timer ships an update every 5 weeks, Pacer Fitness every 9 days. Both last shipped on November 6, 2026.

Scorecard3 real differences · 7 level
Gymboss Interval Timer versus Pacer Fitness: the parameters behind the verdict, then further details
ParameterGymboss Interval TimerPacer Fitness
PriceFreeFree
Rating4.7 (840 ratings)4.7 (306 ratings) — better
Positive reviews36.7% of reviews60.7% of reviews — better
Number of ratings840 — better306
Update frequencyEvery 5 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS15.012.0 — better
Further details — not scored
Size23 MB132 MB
Age rating4+4+
DeveloperGymboss LLCBright Mediums

Customer experience

Gymboss Interval Timer

All ratings797 ratings
Positive91.7%
Neutral2.1%
Negative6.1%
Written reviews270 reviews
Positive36.7%
Neutral13.3%
Negative50.0%

Pacer Fitness

All ratings306 ratings
Positive92.8%
Neutral4.2%
Negative2.9%
Written reviews89 reviews
Positive60.7%
Neutral14.6%
Negative24.7%

User reviews

Gymboss Interval Timer

From 840 App Store ratings

What we love

  • 🚀 Simple yet effective
  • 🚀 Perfect gym partner
  • 🚀 Grad App
  • 🚀 Great
  • 🚀 Simple easy to plan and workout

Room to improve

  • 🐛 Clear data
  • 🐛 Glitchy
  • 🐛 Another buggy update
  • 🐛 Landscape / portrait bugs
  • 🐛 Sagging under bugs

Pacer Fitness

From 306 App Store ratings

What we love

  • 👍 Intuitive and easy-to-use interface
  • 🎨 Beautiful, clean, and visually appealing design
  • ⚙️ Highly customizable timer configurations
  • 🔊 Satisfying and audible sound notifications
  • 💾 Ability to save and reuse custom timers

Room to improve

  • 💰 Misleading free-to-premium pricing model
  • 🔐 Privacy concerns with Apple Health data syncing
  • 🐛 App crashes when screen is locked
  • 🐛 App stops when switching to other apps
  • 📢 Excessive and intrusive advertisements

Bugs and requests

Gymboss Interval Timer

Reported bugs

8 issues
  • Timer no longer beeps when screen is locked or app is in background
  • Intervals disappear or get shuffled after updates
  • Unable to save new workouts
  • All workout sounds have gone
  • Crashes when trying to edit intervals
Show 3 more
  • Reordering of saved workouts
  • Ads cover the timer screen
  • Timer stops working when screen is locked or app is in background

Requested features

9 requests
  • Verbal prompts like a countdown "3-2-1 Go!" and "3-2-1 Rest"
  • Ability to lock the screen
  • Option to see what's coming next
  • Workout block of 60/30/30 rather than just high and low
  • Ability to start from partway through the sequence
Show 4 more
  • Back and forward button to skip to the wanted element or go back during the sequence
  • Different alarm sounds for each interval/color
  • Countdown, CountUp feature
  • Dark mode option

Pacer Fitness

Reported bugs

10 issues
  • Intervals beyond the 8th one don't execute
  • Example workout has broken intervals
  • Apple Health sync toggle resets automatically
  • Timer stops when phone screen is locked
  • Timer stops when switching between apps
Show 5 more
  • App crashes during workout execution
  • Sound doesn't play over background music
  • App demands rating and stops timer without warning
  • Frequent crashing on startup (older versions)
  • Unable to purchase ad-free version

Requested features

10 requests
  • Auto-play functionality for continuous workouts
  • Apple Watch app support
  • GPS tracking for running workouts
  • Adjustable countdown time (longer than 3 seconds)
  • Ability to combine multiple timers in one workout
Show 5 more
  • Daily workout history instead of combined totals
  • Music control integration within the app
  • More pre-built workout templates (battle ropes, etc.)
  • Longer maximum timer duration (beyond 10 minutes)
  • Ability to run app with screen locked and other apps open

In-app purchases

3 purchases

Gymboss Interval Timer

Subscriptions1
  • Gymboss Premium Yearly$1.991 Year
One-time2
  • Remove Ads$0.99
  • Sound and Color Bundle$0.99
1 purchases

Pacer Fitness

One-time1
  • Unlock Pacer Plus$4.99

Questions

Is Gymboss Interval Timer free?
Gymboss Interval Timer is free to download, with in-app purchases available.
Is Pacer Fitness free?
Pacer Fitness is free to download, with in-app purchases available.
Which has better reviews, Gymboss Interval Timer or Pacer Fitness?
Pacer Fitness is rated higher. Gymboss Interval Timer averages 4.7 out of 5 from 840 ratings, while Pacer Fitness averages 4.7 from 306 ratings.
Do Gymboss Interval Timer or Pacer Fitness have ads?
Neither Gymboss Interval Timer nor Pacer Fitness shows ads.
Which is updated more often, Gymboss Interval Timer or Pacer Fitness?
Gymboss Interval Timer ships an update every 5 weeks, and Pacer Fitness every 9 days. Most recently, Gymboss Interval Timer was updated on November 6, 2026 and Pacer Fitness on November 6, 2026.

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