Interval timer vs RX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Interval timer
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Intervalo is a workout timer for people who want more than a countdown. Build custom interval workouts, save the timers you actually use, and run every session with a clear full-screen timer, sound cues, and haptics. Use Intervalo for HIIT, Tabata, boxing rounds, running intervals, circuit training, bodyweight sessions, mobility, and more. What you can do: • Create simple interval workouts with work, rest, rounds, and countdown • Save workouts to your library and start them again in one tap • Reorder your workout library so your go-to sessions stay ready • Follow every interval with audio cues, haptics, and full-screen timer mode • Track completed sessions with calendar history and streaks • Restart past workouts or turn previous sessions into templates • Keep your workout data on your device with no account required Upgrade to Pro to unlock advanced multi-block intervals, featured workout plans, extra sound styles, themes, dark mode, video backgrounds, and more.
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.
- 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
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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
Verdict
The clearest difference is in-app purchases: RX at none against Interval timer's 1. Interval timer's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). 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
Both are free to download. Interval timer sells 1 one-off in-app purchase. RX asks for nothing beyond the download.
| Parameter | Interval timer | RX |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 106 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | PATRYCJA MARIA RYCHLIK-WIDERA | Daniel Thrnaholm |
In-app purchases
Interval timer
- Intervalo Pro$2.99
RX
No in-app purchases









