# JstMacros vs Bike Dynamics

The clearest difference is in-app purchases: JstMacros at none against Bike Dynamics's 2. JstMacros also leads on iOS requirement (17.0 vs 26.5). Bike Dynamics's advantage is update cadence (every 3 days vs weekly). On price, ads and device support there is nothing between them.

Both are free to download. Bike Dynamics sells 2 one-off in-app purchases. JstMacros asks for nothing beyond the download.

JstMacros ships an update weekly, Bike Dynamics every 3 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | JstMacros | Bike Dynamics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/bike-dynamics/id6812074998/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 3 MB | 24 MB |
| Requires iOS | **17.0** | 26.5 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Dallin Rima](https://appshunter.io/developer/1788119512) | [FLORENTIN TOBIAS ERB](https://appshunter.io/developer/1833913213) |

## What reviewers say

### JstMacros

[App page](https://appshunter.io/ios/app/jstmacros/id6797120983)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Bike Dynamics

[App page](https://appshunter.io/ios/app/bike-dynamics/id6812074998)

This app transforms your Apple Watch into a mountain biking sensor, analyzing motion and GPS data to provide detailed insights into your rides. Track jumps, corners, and speed, then replay and compare your runs on a synchronized map and timeline. It also offers an AI coach to discuss your performance and technique.

**Highlights:** Ride analysis with map and timeline, Jump, corner, and control detection, Airtime, jump distance, and speed tracking, Repeated trail section recognition, Personal performance archive, AI coach for ride reflection, Strava export

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bike Dynamics Trial | Free | one-time |
| Bike Dynamics Lifetime | $5.99 | one-time |


## Frequently asked questions

### Is JstMacros free?

JstMacros is free to download, with no in-app purchases.

### Is Bike Dynamics free?

Bike Dynamics is free to download, with in-app purchases available.

### Do JstMacros or Bike Dynamics have ads?

Neither JstMacros nor Bike Dynamics shows ads.

### Which is updated more often, JstMacros or Bike Dynamics?

JstMacros ships an update weekly, and Bike Dynamics every 3 days. Most recently, JstMacros was updated on October 25, 2026 and Bike Dynamics on October 29, 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.*