# eMaxMobileApp vs TrailRig

The clearest difference is price: TrailRig at Free against eMaxMobileApp's $0.99. TrailRig also leads on update cadence (every 4 days vs every 3 weeks). eMaxMobileApp's advantage is in-app purchases (none vs 1) and iOS requirement (15.6 vs 17.0). On ads and device support there is nothing between them.

TrailRig is free to download; eMaxMobileApp costs $0.99 up front. TrailRig sells 1 one-off in-app purchase. eMaxMobileApp asks for nothing beyond the download.

eMaxMobileApp ships an update every 3 weeks, TrailRig every 4 days. The most recent releases landed on October 30, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | eMaxMobileApp | TrailRig |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.5 (15 ratings)](https://appshunter.io/ios/app/emaxmobileapp/id1460664010/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 92.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Paid | — |
| Size | 5 MB | 18 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Markus Schlegel](https://appshunter.io/developer/1460664009) | [Zoran Prole](https://appshunter.io/developer/6786461516) |

## What reviewers say

### eMaxMobileApp

[App page](https://appshunter.io/ios/app/emaxmobileapp/id1460664010)

This tool optimizes STePS systems for various Bluetooth-enabled displays and drive units. It offers advanced tuning possibilities depending on your specific hardware and firmware.

**Highlights:** Optimizes STePS systems, Supports Bluetooth displays, Compatible with various drive units, Works with Shimano motor firmware, Advanced tuning possibilities

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

**In-app purchases:** none


### TrailRig

[App page](https://appshunter.io/ios/app/trailrig/id6786461514)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TrailRig Pro | $9.99 | one-time |


## Frequently asked questions

### Is eMaxMobileApp free?

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

### Is TrailRig free?

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

### Do eMaxMobileApp or TrailRig have ads?

Neither eMaxMobileApp nor TrailRig shows ads.

### Which is updated more often, eMaxMobileApp or TrailRig?

eMaxMobileApp ships an update every 3 weeks, and TrailRig every 4 days. Most recently, eMaxMobileApp was updated on October 30, 2026 and TrailRig on October 15, 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.*