Comparison

Core Advantage Interval Timer vs Box Timer

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

Head to head
About

Core Advantage Interval Timer

Create and follow custom interval training routines or choose from pre-built workouts. This app supports various training styles, from high-intensity sprints to tempo control and stretching protocols, with adjustable music volume.

Highlights
  • Customizable workout builder
  • Pre-built workout library
  • Adjustable interval volume
  • Training metronome
  • Repeat sprint timer
  • Tempo control timer
Features
Read full description

Welcome to the Core Advantage Interval Timer. Choose from our list of pre-built workouts or build & save your own with custom. Listen to music while you train with adjustable interval volume levels. Workouts include: - 8:12s. The most effective and efficient way to improve anaerobic fitness on a spin bike - Fartlek Timer. Swedish for speed play, use for a randomised workout of hard, moderate and easy effort - Game Fit. The world’s best sports replication drill designed to replicate the movement patterns, muscle groups and fitness demands of team sport - Training Metronome. Use this simple tool to improve your running cadence or lifting tempo. - Repeat Sprints. Long slow cardio is ineffective for power athletes get fit with repeated high-velocity sprints - Stretching. Custom built for the Core Advantage Crouching three stretching protocol - Tempo Timer. Use to accurately control your strength training tempo - Custom. Build and save your own timing protocols with our workout builder. [www.coreadvantage.com.au](http://www.coreadvantage.com.au/) Updates: **Version 2.1.0*** - Introducing a training metronome! This is a key tool that we often use in the gym for improving running and cycling cadence or building rhythm and coordination on movements. Set up a duration for the timer then pick a cadence, you can even adjust the tempo from within the timer. - A little styling change here and there, with some streamlined button sizes and font adjustments - Added titles to the top of each page and shortened up the menu item names for slick-ness ***Version 2.0.1*** Squashed a few little bugs that had snuck into the apps functionality with the last big update. - Thanks to Glenn for this one: Remember me functionality. Hate re-typing your email? Tick the remember me box and suffer no longer as your details will be saved. - A few athletes pointed this one out too: Music & podcasts will now play again while you are training hard, sorry you had to sweat in silence these past few weeks. - Somehow our gym open times had -1 instead of 0 for empty time slots. Not even sure how you do that, but it's fixed now so we will stop the philosophical pondering on negative attendance. - Adjusted interface for Core Advantage members booking class times - buttons now look more button-y and the words are good-er. - Bug work in progress: There may still be some delay between setting up an ongoing bulk enrollment and it becoming visible in your schedule, we did a little work to speed this up, but stay patient with it, as they might not all appear straight away. ***Version 2.0.0*** Core Advantage members can now book and change their training schedule. Simply log in using your account email address and date of birth (DDMMYY format) to view and book times in the gym. *Parents and guardians can also log in using their email address with the date of birth of any of their children/dependents ***New in version 1.2.0*** - Fartlek Timer. Swedish for speed play, use for a randomised workout of hard, moderate and easy effort - Tempo Timer. Use to accurately control your strength training tempo - Independent volume control. So you can keep the music pumping and the bells in the background

About

Box Timer

This app provides a simple, distraction-free timer designed for intense training sessions like CrossFit, HIIT, and functional fitness. It features a massive, high-contrast display, customizable interval options, and seamless audio cue integration with music apps. All workouts are automatically saved for easy tracking and reuse.

Highlights
  • Massive, high-contrast display
  • Supports AMRAP, EMOM, For Time, Tabata
  • Customizable work/rest intervals and rounds
  • Works with music apps, clear audio cues
  • Automatic workout history and reuse
  • Background operation and screen lock support
  • No ads or sign-up required
Features
Read full description

SIMPLE TIMER BUILT FOR SERIOUS TRAINING Box Timer brings the power of a CrossFit box timer to your phone. Massive display. Zero distractions. Works perfectly whether you're in the gym, at home, or training outdoors. BUILT FOR CROSSFIT, HIIT & FUNCTIONAL FITNESS From crushing WODs to HYROX training and daily circuits — Box Timer handles every workout type with a clean interface that keeps you focused on the work, not the timer. EVERY WORKOUT TYPE COVERED - AMRAP (As Many Rounds As Possible) - EMOM (Every Minute On the Minute) - For Time workouts with countdown - Tabata (20/10 protocol) - Custom intervals with work/rest periods and rounds - Count up or count down modes DESIGNED FOR VISIBILITY – Massive timer display with high-contrast text – Landscape mode for maximum size – Readable from 10+ meters away – Perfect for garage gyms and home workouts AUDIO THAT WORKS WITH YOUR MUSIC – Crystal-clear audio cues for round changes – Works seamlessly with Spotify, Apple Music, and any audio app – No interruptions to your playlist – Simple settings for audio on/off SAVE YOUR GO-TO TIMERS – Save any timer as a named preset – Load it again with one tap from the timer screen – Edit or delete presets anytime – Never set up the same workout twice ZERO FRICTION EXPERIENCE – Works in background and with screen locked – No account or sign-up required – No ads – Lightning-fast timer setup – Runs smoothly even during intense workouts GLOBAL FITNESS COMMUNITY Available in English, Swedish, German, Spanish, Polish, French, and Japanese WHY ATHLETES CHOOSE BOX TIMER "This app is a must have for CrossFit workouts. Ideal for emoms, amraps and for time workouts. I even use it for strength work like squats by programming beeps for 45 seconds work and 2 minutes rest. And it’s free! I mean come on." Whether you're an elite athlete or just starting your fitness journey, Box Timer delivers exactly what you need: a powerful, distraction-free timer that stays out of your way. Get it now and experience the difference.

Screenshots

Core Advantage Interval Timer4 screens
Box Timer4 screens

Verdict

The call

Core Advantage Interval Timer and Box Timer both sit at 5.0 stars, but that hides the real split: 93% of Box Timer's written reviews are positive against 50% of Core Advantage Interval Timer's. Box Timer also leads on ratings volume (2.9K vs 4) and update cadence (monthly vs every 2 months). Core Advantage Interval Timer's advantage is iOS requirement (11.0 vs 18). On price, rating, ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Core Advantage Interval Timer against 4.9 for Box Timer. That said, the two scores are not equally well evidenced: Box Timer has 2.9K ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 50% of Core Advantage Interval Timer's written reviews are positive against 93% of Box Timer's.

UpkeepUpdate frequency

Core Advantage Interval Timer ships an update every 2 months, Box Timer monthly. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

Scorecard4 real differences · 6 level
Core Advantage Interval Timer versus Box Timer: the parameters behind the verdict, then further details
ParameterCore Advantage Interval TimerBox Timer
PriceFreeFree
Rating5.0 (4 ratings) — better4.9 (2.9K ratings)
Positive reviews50.0% of reviews93.4% of reviews — better
Number of ratings42.9K — better
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better18
Further details — not scored
Size16 MB7 MB
Age rating4+4+
DeveloperCore Advantage Pty LtdEdvin Linden

Customer experience

Core Advantage Interval Timer

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

Box Timer

All ratings2,944 ratings
Positive96.9%
Neutral1.5%
Negative1.6%
Written reviews136 reviews
Positive93.4%
Neutral0.0%
Negative6.6%

Bugs and requests

Core Advantage Interval Timer

Not enough reviews yet to summarise bugs or requests.

Box Timer

Reported bugs

3 issues
  • Timer not functioning properly in landscape mode
  • Review prompt interfering with timer operation
  • Compatibility issues on certain iPad models

Requested features

4 requests
  • Round count display during rest periods
  • Customizable countdown beeps or sounds
  • Ability to save and load custom timer settings
  • Apple Watch app support

In-app purchases

None

Core Advantage Interval Timer

No in-app purchases

None

Box Timer

No in-app purchases

Questions

Is Core Advantage Interval Timer free?
Core Advantage Interval Timer is free to download, with no in-app purchases.
Is Box Timer free?
Box Timer is free to download, with no in-app purchases.
Which has better reviews, Core Advantage Interval Timer or Box Timer?
Core Advantage Interval Timer is rated higher. Core Advantage Interval Timer averages 5.0 out of 5 from 4 ratings, while Box Timer averages 4.9 from 2.9K ratings.
Do Core Advantage Interval Timer or Box Timer have ads?
Neither Core Advantage Interval Timer nor Box Timer shows ads.
Which is updated more often, Core Advantage Interval Timer or Box Timer?
Core Advantage Interval Timer ships an update every 2 months, and Box Timer monthly. Most recently, Core Advantage Interval Timer was updated on October 6, 2026 and Box Timer on October 14, 2026.

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