# iSmoothRun vs VibroSpeed

The clearest difference is in-app purchases: VibroSpeed at none against iSmoothRun's 2. VibroSpeed also leads on update cadence (every 6 days vs every 2 months) and price ($0.99 vs $4.99). iSmoothRun's advantage is chart position (#80 vs unranked) and iOS requirement (15.0 vs 17.4). On ads and device support there is nothing between them.

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

iSmoothRun ships an update every 2 months, VibroSpeed every 6 days. The most recent releases landed on September 26, 2026 and August 18, 2026 respectively.

## The numbers

| Metric | iSmoothRun | VibroSpeed |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| Rating | **[4.4 (942 ratings)](https://appshunter.io/ios/app/ismoothrun/id410965399/reviews)** | — |
| Number of ratings | **942** | — |
| Positive reviews | 63.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Freemium | — |
| Best chart rank | **#80** | — |
| Size | 31 MB | 1 MB |
| Requires iOS | **15.0** | 17.4 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Lake Horizon Ltd](https://appshunter.io/developer/410965402) | [欣辰 叶](https://appshunter.io/developer/1717616211) |

## What reviewers say

### iSmoothRun

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

**Currently charting:** #80 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


### VibroSpeed

[App page](https://appshunter.io/ios/app/vibrospeed/id6480349110)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is iSmoothRun free?

iSmoothRun costs $4.99, and also offers in-app purchases.

### Is VibroSpeed free?

VibroSpeed costs $0.99, with no in-app purchases.

### Do iSmoothRun or VibroSpeed have ads?

Neither iSmoothRun nor VibroSpeed shows ads.

### Which is updated more often, iSmoothRun or VibroSpeed?

iSmoothRun ships an update every 2 months, and VibroSpeed every 6 days. Most recently, iSmoothRun was updated on September 26, 2026 and VibroSpeed on August 18, 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.*