Comparison

iSmoothRun vs RunPaceCalc

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

Head to head
About

iSmoothRun

This app tracks and logs various fitness activities like running, walking, and cycling with extensive sensor support. It offers advanced training features, workout planning, and seamless integration with popular fitness platforms and HealthKit.

Highlights
  • Activity tracking (running, walking, cycling)
  • Advanced sensor support (HRM, stride, power)
  • Running Power training
  • Workout editor and planner
  • TrainingPeaks/Final Surge sync
  • HealthKit integration
  • Data export (GPX, TCX, KML, PWX, CSV)
Features
Read full description

iSmoothRun is the best App to effectively track and log all of your running, walking, hiking, cycling and any other fitness activity. Solid performance. Continuous development. Best sensor support (HRM, stride sensor, speed/cadence combo, cycling power, running power, treadmill) Now with support for Watch OS9 "Running Power". (for devices that support it), Always ON Display support and Apple Watch Ultra Action Button. Base your training on Running Power, create workouts with power intervals and take your training to the next level. The best stand alone Apple Watch app, with configurable pages and solid performance that puts to shame any sports watch. Connect your BT sensors to your watch and leave your phone home. Best Interval and workout editor to help you follow your training plan. Create any workout based on HR, HR Zone, Pace or Power and let the app pace you. Workouts are available on the Apple Watch too with full Audio support! Auto sync structured workout plans from Training Peaks, Final Surge and TrainAsOne (requires Pro subscription). Connect with these services and have your structured workouts directly on your Apple Watch or iPhone. Start your run and let the app coach you. Integration with HealthKit. iSmoothRun uses HealthKit to export your activities into the Health and Activity apps and to read heart rate and biometric data. Accurately tracks time, distance, location, pace, altitude, running cadence, heart rate, power and reports them with audio announcements at configurable time or distance intervals. - Improve you running Form iSmoothRun will consistently track your running cadence. Use the build in metronome (iPhone only) to easily raise it. - The most extended support for sensors All BT Smart sensors (HRMs, footpods, speed/cadence combo, cycling power, Stryd running power custom metrics like Contact Time, Form Power etc are supported too) All ANT+ (extra hardware needed: 4iiii Viiiiva ) - Your data are yours, Don't lock yourself in. We love being open. Export your training data in GPX,TCX,KML,PWX, or CSV format. Connect and share your workouts with the most active running communities, Strava, Runkeeper, sportTracks, Movescount, SmashRun, TrainingPeaks, FinalSurge, Runalyzer, TrainAsOne and MapMyRun .This is the most connected app, period. -Run/Walk Are you into Run/walk training? Great. Now it's easier than ever to set your timers and enjoy all the benefits of the best running app. - Track your Shoe mileage Every runner knows that tracking the mileage of his running shoes is essential. - Check your workout statistics Average pace/speed, cadence, total distance, time, average/maximum heart rate and climb. Splits and interval statistics. - Your iPhone is your training log All your data stored in the device. Amazing customizable graphs for each run and for weekly, monthly loads. Follow closely your training load, train smarter and avoid overtraining. - Ghost Run Race against a previous run of yours or a predefined pace. Get motivated, evaluate your training. ...and much more! ** You can subscribe and pay through your iTunes account. Payment will be charged to iTunes account at confirmation of purchase. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. Subscriptions may be managed by the user and auto-renew may be turned off after purchase by going to the 'Manage Subscription' page in settings. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. The subscription will renew at the same cost. ** Continued use of GPS running in the background can dramatically decrease battery life. **iPod touch users are advised to use an external sensor, GPS or footpod.

About

RunPaceCalc

Easily calculate running pace and speed by inputting distance and time. This tool offers a streamlined interface for quick calculations of all key running metrics in one place.

Highlights
  • Calculate distance, time, speed, and pace
  • Supports kilometers and miles
  • Quick values in side panel
  • Easy and fast interface
  • Reset calculator by shaking device
Features
Read full description

RunPaceCalc lets you calculate your running pace and speed by entering distance and time. With an easy to use interface you can make calculations on distance, time, pace and speed in a single screen. Features: - Calculate distance, time, speed and pace - Units in Kilometers and Miles - Quick values at hand in the side panel - Easy and fast to use Pro tip: - Shake your iPhone or iPod to reset the calculator

Screenshots

iSmoothRun4 screens
RunPaceCalc2 screens

Verdict

The call

The clearest difference is review sentiment: iSmoothRun at 70% against RunPaceCalc's 0%. iSmoothRun also leads on update cadence (every 2 months vs every 14 months) and chart position (#83 vs unranked). RunPaceCalc's advantage is in-app purchases (none vs 2) and price ($0.99 vs $4.99). On 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

iSmoothRun costs $4.99 and RunPaceCalc $0.99 up front. iSmoothRun sells 2 in-app purchases, starting at $4.99 per month. RunPaceCalc asks for nothing beyond the download.

UpkeepUpdate frequency

iSmoothRun ships an update every 2 months, RunPaceCalc every 14 months. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

Scorecard8 real differences · 3 level
iSmoothRun versus RunPaceCalc: the parameters behind the verdict, then further details
ParameteriSmoothRunRunPaceCalc
Price$4.99$0.99 — better
Rating4.4 (942 ratings) — better—
Positive reviews70.1% of reviews — better0.0% of reviews
Number of ratings942 — better—
Update frequencyEvery 2 months — betterEvery 14 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
Best chart rank#83 — better—
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS15.0 — better18.0
Further details — not scored
Size31 MB3 MB
Age rating4++4
DeveloperLake Horizon LtdMagnus Hjelm

Customer experience

iSmoothRun

All ratings942 ratings
Positive84.2%
Neutral3.5%
Negative12.3%
Written reviews752 reviews
Positive70.1%
Neutral7.8%
Negative22.1%

RunPaceCalc

Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

Bugs and requests

iSmoothRun

Reported bugs

4 issues
  • Frequent app crashes, especially when starting a workout
  • Inconsistent distance and pace tracking, especially on treadmill
  • Issues with syncing data between iPhone and Apple Watch
  • Problems with audio cues and notifications not working as expected

Requested features

5 requests
  • Improved Apple Watch app with standalone functionality
  • Better integration with popular fitness platforms
  • More customization options for data fields and audio cues
  • Ability to import and sync workouts from other sources
  • Improved battery life optimization

RunPaceCalc

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

iSmoothRun

Subscriptions2
  • Pro Monthly Subscription7 Days trial$4.991 Month
  • Annual Pro Subscription7 Days trial$24.991 Year
None

RunPaceCalc

No in-app purchases

Questions

Is iSmoothRun free?
iSmoothRun costs $4.99, and also offers in-app purchases.
Is RunPaceCalc free?
RunPaceCalc costs $0.99, with no in-app purchases.
Do iSmoothRun or RunPaceCalc have ads?
Neither iSmoothRun nor RunPaceCalc shows ads.
Which is updated more often, iSmoothRun or RunPaceCalc?
iSmoothRun ships an update every 2 months, and RunPaceCalc every 14 months. Most recently, iSmoothRun was updated on October 13, 2026 and RunPaceCalc on October 11, 2026.

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