Comparison

Box Timer vs RX

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

Head to head
About

Box Timer

Features
Read full description

Box Timer is a customizable interval and round timer for boxing, kickboxing, Muay Thai, MMA, BJJ, karate, taekwondo, and judo. Use it for shadowboxing, bag work, technique drills, HIIT, or your own training routine. Set the exercises, work intervals, rest periods, and repeats to fit your session. No ads. No paywall. No subscriptions. A QUICK TIMER THAT REMEMBERS YOUR SETTINGS Configure your everyday session once and return to it whenever you train. Set preparation time, boxing rounds, rest, and repetitions, then press Start. You do not need to create a saved workout to use the timer. BUILD AND SAVE YOUR OWN WORKOUTS Create separate presets for different training days, disciplines, or goals. Combine exercises, preparation, rest, cooldowns, and repeat blocks in your own sequence. Adjust each step's duration and repeat groups of steps instead of adding them individually. Save your routines and reuse them for your next session. CHOOSE FROM MORE THAN 1,000 EXERCISES — OR CREATE YOUR OWN Browse exercises for striking, grappling, warm-ups, and cooldowns. Search for a drill and add it to your workout. Create custom exercises when you need something different, with your own name, description, and optional photo or video link. CUSTOMIZE EACH EXERCISE Change exercise names to match your drills and combinations. Choose an icon and color for each exercise so you can recognize it during training. Set individual durations and arrange the sequence around the way you train. Give saved workouts their own icons and colors to distinguish your routines. MANAGE YOUR SESSION WITH A TAP Tap an exercise icon to open its actions. View exercise details, move a step, duplicate it, or copy and paste it into your session. Build longer routines from the drills you already configured. FOLLOW EVERY ROUND The active timer shows your current exercise, its remaining time, the next step, and the time left in the session. See your progress through the workout and use sound assistance with your chosen round bell. Pause and resume, restart, or move forward and back through the sequence when your session changes. KEEP YOUR TIMER IN VIEW Follow an active workout with Live Activities on the Lock Screen and Dynamic Island. Use Home Screen and Lock Screen widgets to access and control your session. CHOOSE YOUR APP'S APPEARANCE Use light mode, dark mode, or follow your system appearance. Pick an accent color for the main action buttons. Customize exercise and workout icons separately, and unlock alternative app icons as you train. REVIEW YOUR COMPLETED SESSION See completed rounds and segments, active time, rest time, total duration, and skipped time. The workout summary also includes an estimated calorie burn. Use the quick timer for your regular rounds or build a saved workout with different drills and intervals. Box Timer gives you control over the sequence, timing, names, icons, and colors in one app.

About

RX

This app provides a versatile workout timer designed for functional fitness. It supports various training formats like AMRAP, EMOM, and Tabata with customizable durations and clear visual cues. The app offers offline functionality, a high-contrast display, and the ability to stream to external screens.

Highlights
  • Multiple workout formats (AMRAP, EMOM, Tabata, RFT)
  • Customizable work/rest intervals
  • Large, high-contrast display
  • Landscape full-screen mode
  • Work/rest color coding
  • Stream timer to TV via AirPlay
  • Offline functionality
Features
Read full description

A WOD timer in your pocket, always ready when you are. No hunting for the gym clock. No dead remote batteries. No digging through menus before a workout. RX-Timer is built for one job: start training fast, see the clock clearly, and stay focused on the work. 100% free. No account. No ads. No subscription. Just a timer that does everything you need, without getting in the way. Every workout format • Count up for AMRAP and For Time • Count down for timed efforts, with optional pre-start countdown (3, 2, 1) • Intervals with work/rest rounds for EMOM, Tabata, RFT, and chipper-style sessions • Adjust any duration down to the second. Built for the gym • Huge digits you can read from across the room. • High contrast display • Landscape full-screen mode. Tap to start, pause, or resume • Work/rest colour coding. Red and green cues like the clock at your box • Clear beeps and haptics at starts, transitions, and finish • Sound works alongside your music Stream to a TV • Mirror the timer to AirPlay displays. • Perfect when your phone is propped up or you want the whole gym to see the clock. Track your training • See how many timers you have completed and view your activity on a heat map. • Built in, on your device, with no login. Zero friction • Works offline • No sign-up required • All settings and stats stay on your phone • Sound can be turned off anytime Whether you are hitting a WOD at the box, training in the garage, or travelling without a gym clock, RX-Timer is the timer you will actually want to open every session. RX-Timer is a workout timer for functional fitness. It is not a medical device, medication reminder, or prescription app.

Screenshots

Box Timer4 screens
RX4 screens

Verdict

The call

The clearest difference is update cadence: Box Timer at weekly against RX's every 3 weeks. RX's advantage is iOS requirement (17.0 vs 26.0). On price, ads, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Box Timer ships an update weekly, RX every 3 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Box Timer versus RX: the parameters behind the verdict, then further details
ParameterBox TimerRX
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhoneiPhone
Requires iOS26.017.0 — better
Further details — not scored
Size98 MB4 MB
Age rating4+4+
DeveloperSvyatoslav BoikoDaniel Thrnaholm

In-app purchases

None

Box Timer

No in-app purchases

None

RX

No in-app purchases

Questions

Is Box Timer free?
Box Timer is free to download, with no in-app purchases.
Is RX free?
RX is free to download, with no in-app purchases.
Do Box Timer or RX have ads?
Neither Box Timer nor RX shows ads.
Which is updated more often, Box Timer or RX?
Box Timer ships an update weekly, and RX every 3 weeks. Most recently, Box Timer was updated on November 5, 2026 and RX on October 31, 2026.

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