# Calculator For Runner (CalcForRun) > Runner's lap time and pace calculator with track split and cheering point features. (iPhone/iPad app by Makoto Hashizume.) - Source: https://appshunter.io/ios/app/calculator-for-runner-calcforrun/id420241404 (this page in markdown: same URL + `.md`) - Developer: [Makoto Hashizume](https://appshunter.io/developer/420241407) - Category: Health & Fitness, Utilities - Price: Free - Rating: 4.40/5 from 8 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 8.0 · 1 MB - Languages: American English, Japanese - Released: 2011-02-25 - Data updated: 2026-06-05 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/calculator-for-runner-calcforrun/id420241404/reviews.md ## What is Calculator For Runner (CalcForRun)? This is a calculator that allows all runners to simply calculate their lap-time and pace. It feels the same to use as a typical calculator, but it can also carry out for different operations for calculating time. Furthermore, it also has a special screen used to calculate a runner's pace prepared below. - Judging by the distance(km or miles) traveled and time elapsed, the calculator can determine the pace and speed of a runner. - Judging by the pace (or speed) and distance(km or miles) traveled by a runner, the calculator can determine the time elapsed. - Judging by the pace (or speed) and time elapsed, the calculator can determine the distance(km or miles) traveled. ----- Ver2.2 Update ----- - Track mode has now been added to split time tables On occasions where distance equals 800m(0.8km)/1000m(1km)/1500m(1.5km)/2000m(2km)/5000m(5km)/10000m(10km), split time tables can now be displayed on the basis of track distance, instead of 1km intervals. - A search function has been added for crossing times at cheering points A mode has been added to estimate cheer point crossing times, calculated from estimated finish times or crossing times for the preceding lap point. Calculate from estimated finishing time / Calculate from crossing time for preceding checkpoint ----- Ver2.0 Update ----- The calculator is compatible with four inch displays and the iOS7 screen. The user can change the settings from full-marathon, half-marathon, or a user-determined distance with only one touch. The user can insert seconds, minutes or hours into the time display. The pace calculating screen can also be used to show split-times. Using the backspace button, the user can return to their entries prior to their current one. ----- Calculation Rule ----- Measuring time requires choosing seconds, minutes or hours as the lowest unit of calculation. The numerical value of time for addition will be calculated using seconds. In the case that numerical values are subtracted from time, calculations will be done using seconds. Numerical values cannot be subtracted from time. When the numerical value is divided by time, speed is calculated. The multiplication of numbers and time will become time. However, in the case that the previous calculation's result was speed, the numerical value of distance shall be calculated. Time cannot be multiplied by Time. ## Key features - Calculate lap time and pace - Determine pace from distance and time - Calculate time from pace and distance - Calculate distance from pace and time - Track mode for split time tables - Estimate cheering point crossing times - Adjustable distance settings (marathon, half-marathon, custom) ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/calculator-for-runner-calcforrun/id420241404/reviews.md ### 3/5 — Civil time or military time. *2019-11-15* There is no such thing as 0:15 pm. The hour after 11 am is 12 pm The hour after 11 pm is 12 am The hour after 1100h is 1200h followed by 1300h. The hour after 2300h is 000h followed by 0100h. It’s simple 24 hours in a day. The Japanese convention of saying “お昼のレジis an error. As is 2600h. ### 5/5 — Excellent and very useful tool for running pace / distance calculations *2017-06-08* Very handy for training; thoughtful. Love the time calculator! ## Frequently asked questions about Calculator For Runner (CalcForRun) ### What is CalcForRun? CalcForRun is a specialized calculator designed for runners to easily compute lap times and paces. It offers various calculation modes based on distance, time, pace, and speed, with additional features for track splits and cheering point estimations. ### What are the main calculation functions of CalcForRun? CalcForRun can determine a runner's pace and speed based on distance and time elapsed. It can also calculate the time elapsed given pace and distance, or the distance traveled given pace and time. ### Does CalcForRun have features for track running? Yes, CalcForRun includes a track mode that displays split time tables based on track distances like 800m or 1000m, instead of standard 1km intervals. ### Can CalcForRun help with race day planning? Yes, a search function is available for crossing times at cheering points. This mode estimates cheer point crossing times based on estimated finish times or crossing times for the preceding lap point. ### What distance settings are available in CalcForRun? Users can easily change settings for full-marathon, half-marathon, or a user-determined distance with a single touch. ### How does CalcForRun handle time input? Users can insert seconds, minutes, or hours into the time display. The calculation rules specify that time measurements are chosen with seconds as the lowest unit for calculation. ### Is CalcForRun compatible with older iOS versions? The app has been updated for compatibility with four-inch displays and the iOS7 screen, indicating it supports a range of iOS versions. ### What is the update frequency of CalcForRun? The latest version, 2.2.0, was released on April 11, 2017. Previous significant updates include Ver 2.2 and Ver 2.0, suggesting updates occur periodically. ## Version history (last 5 releases) ### 2.2.0 — 2017-04-11 This app has been updated by Apple to display the Apple Watch app icon. ・Track mode has now been added to split time tables On occasions where distance equals 800m(0.8km)/1000m(1km)/1500m(1.5km)/2000m(2km)/3000m(3km)/5000m(5km)/10000m(10km), split time tables can now be displayed on the basis of track distance, instead of 1km intervals. ・A search function has been added for crossing times at cheering points A mode has been added to estimate cheer point crossing times, calculated from estimated finish times or crossing times for the preceding lap point. ### 2.1.1 — 2015-10-26 Resolved the layout corruption when using 3rd party keyboards. ### 2.1 — 2015-10-19 The icons for iPad were added. The following issues were resolved. - The application doesn't respond when coming back from the background state in iOS 9.0.2. - The previous calculation result is not deleted when entering a number after "=". - There is that minus sign does not appear. - The keyboard doesn't change when you switch between "pace" and "speed". ### 2.0.1 — 2014-04-10 Resolved an issue which didn't change "AC" button to "C" button when a user presses the shortcut button("Full","Half" or "Custom"). ### 2.0 — 2014-03-31 The calculator is compatible with four inch displays and the iOS7 screen. The user can change the settings from full-marathon, half-marathon, or a user-determined distance with only one touch. The user can insert seconds, minutes or hours into the time display. The pace calculating screen can also be used to show split-times. Using the backspace button, the user can return to their entries prior to their current one. ## Apps similar to Calculator For Runner (CalcForRun) | App | Rating | Price | Category | | --- | --- | --- | --- | | [康博全科](https://appshunter.io/ios/app/id1487575240) | 5.0 (1) | Free | Health & Fitness | | [Runtrip :Perfect Running Guide](https://appshunter.io/ios/app/runtrip-perfect-running-guide/id1166442524) | 4.5 (8) | Free | Health & Fitness | | [RunChart Workout Tracker](https://appshunter.io/ios/app/runchart-workout-tracker/id1511263496) | — | Free | Health & Fitness | | [CARADA健診サポート](https://appshunter.io/ios/app/carada/id1465880762) | 4.7 (76) | Free | Health & Fitness | | [CountDown 20](https://appshunter.io/ios/app/countdown-20/id1504881520) | 5.0 (1) | Free | Health & Fitness | | [Wash your hands now](https://appshunter.io/ios/app/wash-your-hands-now/id1503634740) | 4.2 (33) | $0.99 | Health & Fitness | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*