# iSmoothRun vs RunPaceCalc

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.

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.

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.

## The numbers

| Metric | iSmoothRun | RunPaceCalc |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| Rating | **[4.4 (942 ratings)](https://appshunter.io/ios/app/ismoothrun/id410965399/reviews)** | — |
| Number of ratings | **942** | — |
| Positive reviews | **70.1% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 14 months |
| Monetization | **Freemium** | Paid |
| Best chart rank | **#83** | — |
| Size | 31 MB | 3 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | +4 |
| Developer | [Lake Horizon Ltd](https://appshunter.io/developer/410965402) | [Magnus Hjelm](https://appshunter.io/developer/341394849) |

## What reviewers say

### iSmoothRun

[App page](https://appshunter.io/ios/app/ismoothrun/id410965399)

**Currently charting:** #83 Top Paid · Health & Fitness (US App Store)

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:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly Subscription | $4.99 | per month |
| Annual Pro Subscription | $24.99 | per year |

**What reviewers like**

- 💻 Excellent app for running, biking, and other activities
- 🎨 Highly customizable with great features
- 🔗 Seamless integration with various platforms and devices
- 🕰️ Reliable and accurate tracking
- 🏃‍♀️ Fantastic for interval training and coaching

**What reviewers complain about**

- 🐛 Frequent crashes and bugs, especially with recent updates
- 🔋 High battery drain, especially on Apple Watch
- 🔍 Inconsistent distance and pace tracking
- 🤖 Poor integration with some platforms like Garmin and Strava
- 🤔 Confusing and outdated user interface

**Reported bugs**

- 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**

- 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

[App page](https://appshunter.io/ios/app/runpacecalc/id492038549)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*