# SmartSkid Controller vs eCall Pro

The clearest difference is update cadence: SmartSkid Controller at every 5 weeks against eCall Pro's every 3 months. SmartSkid Controller also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SmartSkid Controller ships an update every 5 weeks, eCall Pro every 3 months. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | SmartSkid Controller | eCall Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (5 ratings)](https://appshunter.io/ios/app/smartskid-controller/id1493283155/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 6 MB | 9 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [RPM Industries, LLC](https://appshunter.io/developer/960406781) | [Otis Elevator Company](https://appshunter.io/developer/992577451) |

## What reviewers say

### SmartSkid Controller

[App page](https://appshunter.io/ios/app/smartskid-controller/id1493283155)

This app provides wireless control for SmartSkid and SmartTrailer tools. It allows users to monitor fluid levels, pre-program deliveries, manually operate the pump, and receive alerts for tank status and potential issues.

**Highlights:** Monitor fluid levels in all tanks, Pre-program clean fluid delivery amounts, Manual pump operation with jog feature, Over-the-air controller software updates, Alerts for tank status and leaks, Pump performance optimization alerts

**Features:** macOS Compatibility

**In-app purchases:** none


### eCall Pro

[App page](https://appshunter.io/ios/app/ecall-pro/id1561992694)

**In-app purchases:** none


## Frequently asked questions

### Is SmartSkid Controller free?

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

### Is eCall Pro free?

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

### Do SmartSkid Controller or eCall Pro have ads?

Neither SmartSkid Controller nor eCall Pro shows ads.

### Which is updated more often, SmartSkid Controller or eCall Pro?

SmartSkid Controller ships an update every 5 weeks, and eCall Pro every 3 months. Most recently, SmartSkid Controller was updated on November 3, 2026 and eCall Pro on October 27, 2026.

---

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