# MHD N55 E vs eFlexApp

The clearest difference is review sentiment: MHD N55 E at 79% against eFlexApp's 33%. MHD N55 E also leads on rating (4.6 vs 3.4) and ratings volume (53 vs 8). 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.

MHD N55 E holds the better App Store score, 4.6 against 3.4. That said, the two scores are not equally well evidenced: MHD N55 E has 53 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 79% of MHD N55 E's written reviews are positive against 33% of eFlexApp's.

MHD N55 E ships an update every 3 weeks, eFlexApp monthly. The most recent releases landed on June 11, 2026 and July 9, 2026 respectively.

## The numbers

| Metric | MHD N55 E | eFlexApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (53 ratings)](https://appshunter.io/ios/app/mhd-n55-e-series/id1502611398/reviews)** | [3.4 (8 ratings)](https://appshunter.io/ios/app/eflexapp/id1526677191/reviews) |
| Number of ratings | **53** | 8 |
| Positive reviews | **79.2% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 123 MB | 58 MB |
| Requires iOS | **10.2** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MHD Tuning UG (haftungsbeschraenkt)](https://appshunter.io/developer/1445162439) | [StepOne Tech Ltd](https://appshunter.io/developer/1388519134) |

## What reviewers say

### MHD N55 E

[App page](https://appshunter.io/ios/app/mhd-n55-e-series/id1502611398)

This utility app is being retired and users are encouraged to switch to a unified flasher app. It retains some functionality for reading and clearing engine error codes, analyzing past data logs, and accessing vehicle licenses and user guides.

**Highlights:** Read and clear engine DTC error codes, Graph and analyze prior datalogs, View existing vehicle licenses, Access user guide, Transition to unified flasher app

**Features:** macOS Compatibility

**In-app purchases:** none


### eFlexApp

[App page](https://appshunter.io/ios/app/eflexapp/id1526677191)

Monitor your eFlexFuel device in real-time, with features varying by device version. Adjust settings like language, temperature units, and theme. Track ethanol content, engine temperature, and more, depending on your specific eFlexFuel model.

**Highlights:** Real-time device monitoring, Adjustable settings (language, temp, theme), Ethanol content tracking, Engine temperature monitoring, Device status checks, Bluetooth connectivity

**In-app purchases:** none


## Frequently asked questions

### Is MHD N55 E free?

MHD N55 E is free to download, with no in-app purchases.

### Is eFlexApp free?

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

### Which has better reviews, MHD N55 E or eFlexApp?

MHD N55 E is rated higher. MHD N55 E averages 4.6 out of 5 from 53 ratings, while eFlexApp averages 3.4 from 8 ratings.

### Do MHD N55 E or eFlexApp have ads?

Neither MHD N55 E nor eFlexApp shows ads.

### Which is updated more often, MHD N55 E or eFlexApp?

MHD N55 E ships an update every 3 weeks, and eFlexApp monthly. Most recently, MHD N55 E was updated on June 11, 2026 and eFlexApp on July 9, 2026.

---

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