# ECU Connect vs MODI Mobile Diagnostics

The clearest difference is review sentiment: ECU Connect at 62% against MODI Mobile Diagnostics's 0%. On price, update cadence, ads and in-app purchases there is nothing between them.

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

ECU Connect ships an update every 3 weeks, MODI Mobile Diagnostics monthly. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | ECU Connect | MODI Mobile Diagnostics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (88 ratings)](https://appshunter.io/ios/app/ecu-connect/id1140860609/reviews)** | — |
| Number of ratings | **88** | — |
| Positive reviews | **62.1% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 83 MB | 66 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EcuTek Technologies Ltd](https://appshunter.io/developer/1140860608) | [MODI Abrites Ltd.](https://appshunter.io/developer/1779687917) |

## What reviewers say

### ECU Connect

[App page](https://appshunter.io/ios/app/ecu-connect/id1140860609)

This app allows you to program tuned files directly to your car's ECU using your phone. It also provides real-time engine performance monitoring and customizable dashboards. A Bluetooth interface is required for full functionality.

**Highlights:** Program tuned ECU files wirelessly, Real-time engine performance monitoring, Customizable parameter dashboards, Log engine data with GPS coordinates, Adjust RaceROM features on the fly, Connects via Bluetooth Vehicle Interface

**In-app purchases:** none

**What reviewers like**

- 👍 Great app for tuning
- 💪 Allows map switching
- 📱 Customizable dashboard
- 🚀 Fast performance
- 🔧 Works with hardware

**What reviewers complain about**

- ⚠️ Throttle sensitivity restriction
- 😵 Finicky flashing process
- 🚫 No transmission logging
- 📱 Requires phone for display
- 🐛 Boost gauge not working

**Reported bugs**

- App kicks you out when changing background
- Refusals to flash citing nonexistent problems
- Super finicky about battery voltage
- Zero transmission logging
- Latest firmware update no longer allowing app to read car interface on iOS

**Requested features**

- CarPlay support
- Android Auto support
- CarPlay widget
- Widget for iOS home screen
- Landscape dashboard view


### MODI Mobile Diagnostics

[App page](https://appshunter.io/ios/app/modi-mobile-diagnostics/id1459081087)

This app provides advanced diagnostic and customization options for vehicles. It allows users to read and clear trouble codes, view live data, perform module scans, and unlock coding features for various car brands. A health report feature helps identify potential issues before trips.

**Highlights:** Vehicle diagnostics, Read and clear diagnostic trouble codes, Live data display, Module scan, Coding and customization, Health Report

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ECU Connect free?

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

### Is MODI Mobile Diagnostics free?

MODI Mobile Diagnostics is free to download, with no in-app purchases.

### Do ECU Connect or MODI Mobile Diagnostics have ads?

Neither ECU Connect nor MODI Mobile Diagnostics shows ads.

### Which is updated more often, ECU Connect or MODI Mobile Diagnostics?

ECU Connect ships an update every 3 weeks, and MODI Mobile Diagnostics monthly. Most recently, ECU Connect was updated on October 13, 2026 and MODI Mobile Diagnostics on October 4, 2026.

---

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