Comparison

Interval Timer Pro+ 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

Interval Timer Pro+

This app guides you through interval-based workouts, including Tabata and HIIT, with clear instructions for exercises, rest periods, and rounds. It offers workout history and integrates with Apple Watch for calorie and heart rate tracking.

Highlights
  • Simple workout setup
  • Advanced workout creation
  • Exercise naming and warmup
  • Workout history tracking
  • Apple Watch integration
  • Health app integration
Features
Read full description

Interval Timer Pro+ is a perfect interval based workouts app to use at your home, outside or gym. Tabata workouts never been easier! This app guides you though exercises, resting and rounds at ease. Time left for current exercise, resting time and what's coming next. Key features: * Simple workout that is ease to set up. * Advanced workouts creation with warmup and exercise naming. * History of your exercises. * If you have an apple watch app will show active calories burned and your heart rate. This app integrates with the Health app. For users that have purchased additional features we show active and total calories collected by apple watch. We also show heart rate when running a workout. Data from Health app is used to display this data.

About

Box Timer

Features
Read full description

FKN Timer is a training timer built around your own routine — from technical drills and conditioning to full rounds on the bag, pads or mat. Build a workout that matches how you train, start it in one tap, and keep your next move clear while you work. BUILD YOUR SESSION • Create and save workouts for boxing, Muay Thai, kickboxing, MMA, BJJ, wrestling and more • Combine warm-ups, drills, rounds, rest, cooldowns and repeat blocks • Browse exercises by discipline, set durations and repetitions, then arrange the session your way • Rename, duplicate and personalise workouts with your own icon and colour MAKE IT PERSONAL • Create custom exercises for your own drills and training methods • Add an icon, colour, description and optional photo or video link • Keep custom exercises alongside the built-in catalogue and reuse them in any workout STAY IN THE ROUND • See the current exercise, what comes next and the remaining workout time at a glance • Pause, resume, restart, skip forward or move back through a session • Use sound assistance and choose your preferred round bell • Keep an active workout visible on the Lock Screen, Live Activity and Dynamic Island • Control your session from Home Screen and Lock Screen widgets FINISH WITH THE NUMBERS • Review completed segments, total time and skipped time after each workout • Get an estimated calorie burn • Unlock and apply new timer styles as you train From shadowboxing and bag work to grappling drills and conditioning, FKN Timer gives your training a structure that is yours — then keeps you focused until the round is done.

Screenshots

Interval Timer Pro+4 screens
Box Timer4 screens

Verdict

The call

The clearest difference is in-app purchases: Box Timer at none against Interval Timer Pro+'s 1. Box Timer also leads on update cadence (every 9 days vs every 3 months). Interval Timer Pro+'s advantage is device support (4 vs 1) and iOS requirement (15.0 vs 26.0). On price 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. Interval Timer Pro+ sells 1 one-off in-app purchase. Box Timer asks for nothing beyond the download.

UpkeepUpdate frequency

Interval Timer Pro+ ships an update every 3 months, Box Timer every 9 days. The most recent releases landed on September 14, 2026 and October 1, 2026 respectively.

Scorecard4 real differences · 6 level
Interval Timer Pro+ versus Box Timer: the parameters behind the verdict, then further details
ParameterInterval Timer Pro+Box Timer
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 monthsEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS15.0 — better26.0
Further details — not scored
Size27 MB21 MB
Age rating4+4+
DeveloperKarolis RaiselisSvyatoslav Boiko

In-app purchases

1 purchases

Interval Timer Pro+

One-time1
  • Upgrade to Premium$1.99
None

Box Timer

No in-app purchases

Questions

Is Interval Timer Pro+ free?
Interval Timer Pro+ is free to download, with in-app purchases available.
Is Box Timer free?
Box Timer is free to download, with no in-app purchases.
Do Interval Timer Pro+ or Box Timer have ads?
Neither Interval Timer Pro+ nor Box Timer shows ads.
Which is updated more often, Interval Timer Pro+ or Box Timer?
Interval Timer Pro+ ships an update every 3 months, and Box Timer every 9 days. Most recently, Interval Timer Pro+ was updated on September 14, 2026 and Box Timer on October 1, 2026.

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