# e85Cal vs MHD N55 E

The clearest difference is update cadence: MHD N55 E at every 3 weeks against e85Cal's every 4 months. MHD N55 E also leads on iOS requirement (10.2 vs 12.1). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.7 for e85Cal against 4.6 for MHD N55 E. Both are backed by a comparable volume of ratings — 37 and 54 respectively. Written reviews are what separate them: 83% of e85Cal's written reviews are positive against 79% of MHD N55 E's.

e85Cal ships an update every 4 months, MHD N55 E every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | e85Cal | MHD N55 E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (37 ratings)](https://appshunter.io/ios/app/e85cal/id1470313135/reviews)** | [4.6 (54 ratings)](https://appshunter.io/ios/app/mhd-n55-e-series/id1502611398/reviews) |
| Number of ratings | 37 | **54** |
| Positive reviews | **83.3% of reviews** | 79.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 15 MB | 123 MB |
| Requires iOS | 12.1 | **10.2** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Joe](https://appshunter.io/developer/1132486512) | [MHD Tuning UG (haftungsbeschraenkt)](https://appshunter.io/developer/1445162439) |

## What reviewers say

### e85Cal

[App page](https://appshunter.io/ios/app/e85cal/id1470313135)

This app assists users in calculating the precise amounts of standard and ethanol gasoline needed to achieve a desired ethanol percentage in their fuel mix. It simplifies the process by taking into account tank size, current fuel level, and the ethanol content of available fuel types.

**Highlights:** Calculate ethanol percentage goal, Enter gas tank size, Input standard pump gas ethanol %, Input ethanol pump gas ethanol %, Set target ethanol % mix, Enter current fuel level %

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is e85Cal free?

e85Cal is free to download, with no in-app purchases.

### Is MHD N55 E free?

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

### Which has better reviews, e85Cal or MHD N55 E?

e85Cal is rated higher. e85Cal averages 4.7 out of 5 from 37 ratings, while MHD N55 E averages 4.6 from 54 ratings.

### Do e85Cal or MHD N55 E have ads?

Neither e85Cal nor MHD N55 E shows ads.

### Which is updated more often, e85Cal or MHD N55 E?

e85Cal ships an update every 4 months, and MHD N55 E every 3 weeks. Most recently, e85Cal was updated on October 24, 2026 and MHD N55 E on October 24, 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.*