Comparison

Interval Timer vs Calculadora runner

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

Head to head
About

Interval Timer

This app provides a customizable interval timer for various training routines, including HIIT and Tabata. Easily set up custom workouts, track your progress, and stay motivated with visual cues and audio notifications. It's suitable for a wide range of activities from fitness to productivity.

Highlights
  • Customizable workout setup
  • Progress tracking with calendar
  • Saveable custom presets
  • Color-coded notifications
  • Listen to music/audiobooks
  • Large, full-screen display
  • Widget for easy access
Features
Read full description

Interval Timer: Tabata and HIIT is a customizable timer for sports. Use it for High-intensity interval training and workout. It's a free sports interval timer app that makes it easy to create your custom training routine. Use it as your timer for training or exercise. This sports timer is great for crossfit, fitness and running. The sports timer will also be useful for various activities such as crossfit, jogging, boxing,circuit training,breathing exercises and yoga. You can use this circuit timer as a productivity timer to focus on your work tasks. Key features: Setup workout Tracking your progress Customizable presets Notifications & colors Motivation Listening music or books Huge digits Widget SETUP WORKOUT Set up, edit and save your own workouts with the customizable feature. Add as many intervals as you like. You can add a 10 second rest period and a 20 second work period, as well as a 5 second interval between exercises. TRACKING PROGRESS Track your workouts with a Calendar. Plan and track events, and get notified when you have a training scheduled. With this feature, you will not miss a single workout and will keep track of your progress. CUSTOMIZABLE PRESETS Save your workouts in the presets section. It's also possible to create your own custom intervals. You can add an unlimited number of presets. NOTIFICATIONS & COLORS Each training phase is easy to distinguish by a different color and is initiated by an individually adjustable signal (sound, vibration, voice) MOTIVATION Each completed exercise motivates you to achieve higher goals. Enjoy your training and achieve your fitness goals with the interval timer. LISTENING MUSIC Listen to motivational audiobooks or your favorite music and get inspired and energized. Full screen color coded display is easy to read from a distance. Widget helps you train without being distracted by the constant unlocking of your phone. Interval Timer: Tabata and HIIT is an easy to use sports workout timer for your daily fitness training at home, at the gym or everywhere else.

About

Calculadora runner

Features
Read full description

Funciones: 1) Cálculo de ritmo (Pace). ¿A que ritmo debo correr para completar los 10K en 50 minutos? Cálculo de ritmo de carrera (pace) a partir del ingreso de una distancia y un tiempo. 2) Cálculo de tiempo a partir dado una distancia y un ritmo determinado. ¿Cuánto tardaré en completar los 21k si corro a un ritmo de 6' 35" el kilometro? Cálculo del tiempo que le tomará finalizar una carrera a partir del ingreso de una distancia y un ritmo. 3) Cálculo de distancia a partir de un ritmo y un tiempo específicos. ¿Que distancia recorreré si corro 1 Hora y 35 Minutos en un ritmo de 6:45 Min/Km? Cálculo de la distancia que recorrerá en un tiempo y ritmo específico. 4) Cálculo de tiempos parciales. Ingresando distancia, el tiempo esperado y el período (Cada 1 km, cada 5 km, etc) se mostrará el tiempo parcial objetivo de cada período. Por ejemplo, seleccionando Media Maratón, un tiempo esperado de 1:55:22 y parciales cada 5 KM, los resultados son: Ritmo: 5:27 min/km KM 5 : 00:27:18 KM 10 : 00:54:36 KM 15 : 01:21:53 KM 20 : 01:49:12 Final : 01:55:22 5) Pronosticador o predictivo. Permite obtener una estimación de tiempos partir de los tiempos obtenidos en carreras de menor distancia Esta app es gratuita y no posee restricciones en la cantidad de cálculos a realizar.

Screenshots

Interval Timer4 screens
Calculadora runner4 screens

Verdict

The call

The clearest difference is in-app purchases: Calculadora runner at none against Interval Timer's 12. Calculadora runner also leads on ads (none vs shown). Interval Timer's advantage is update cadence (monthly vs every 42 months). On price, device support and iOS requirement 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 sells 12 in-app purchases, starting at $2.09 per month. Calculadora runner asks for nothing beyond the download.

UpkeepUpdate frequency

Interval Timer ships an update monthly, Calculadora runner every 42 months. The most recent releases landed on September 25, 2026 and September 15, 2026 respectively.

Scorecard3 real differences · 7 level
Interval Timer versus Calculadora runner: the parameters behind the verdict, then further details
ParameterInterval TimerCalculadora runner
PriceFreeFree
Rating4.9 (379 ratings) — better—
Positive reviews96.5% of reviews—
Number of ratings379 — better—
Update frequencyMonthly — betterEvery 42 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size113 MB23 MB
Age rating4+17+
DeveloperSimpleInnovation LLCMarcos Ceresoli

Bugs and requests

Interval Timer

Reported bugs

2 issues
  • Occasional app crashes
  • Compatibility issues with older devices

Requested features

3 requests
  • More pre-designed workout routines
  • Ability to name and customize exercises
  • Option to adjust countdown time between intervals

Calculadora runner

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

Interval Timer

Subscriptions8
  • Timer PRO for 1 month: 30% OFF7 Days trial$2.091 Month
  • Timer PRO for 1 month: 25% OFF7 Days trial$2.291 Month
  • Interval Timer PRO for 1 month$2.991 Month
Show 5 more
  • Interval Timer PRO for 1 month7 Days trial$2.991 Month
  • Interval Timer PRO - 30% OFF7 Days trial$15.001 Year
  • Interval Timer PRO - 25% OFF7 Days trial$16.491 Year
  • Interval Timer PRO for 1 year$21.991 Year
  • Tabata Timer PRO for 1 year7 Days trial$21.991 Year
One-time4
  • Interval Timer - no Ads$2.99
  • HIIT Timer PRO Forever 30% OFF$27.99
  • HIIT Timer PRO Forever 25% OFF$29.99
Show 1 more
  • Exercise Timer PRO Forever$39.99
None

Calculadora runner

No in-app purchases

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is Calculadora runner free?
Calculadora runner is free to download, with no in-app purchases.
Do Interval Timer or Calculadora runner have ads?
Interval Timer shows ads; Calculadora runner does not.
Which is updated more often, Interval Timer or Calculadora runner?
Interval Timer ships an update monthly, and Calculadora runner every 42 months. Most recently, Interval Timer was updated on September 25, 2026 and Calculadora runner on September 15, 2026.

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