e85Cal vs MHD N55 E
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
e85Cal
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.
- 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 %
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e85Cal help you calculate your ethanol percentage goal. It fast, simple, and easy to use. Just enter the following information: 1) How big is your gas tank? 2) What is the ethanol % in the standard pump gas? 3) What is the ethanol % in the ethanol pump gas? 4) What is your target ethanol % mix goal? 5) What is your current ethanol % min in your vehicle? 6) What is your current fuel level % in your vehicle? Results will display how many gallons or liters of standard and ethanol gas to pump in your vehicle based on your input.
MHD N55 E
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.
- Read and clear engine DTC error codes
- Graph and analyze prior datalogs
- View existing vehicle licenses
- Access user guide
- Transition to unified flasher app
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This app is being retired. Please switch to our unified "MHD Flasher" app which now supports all E/F/G series vehicles / engines as well as Supra. This app will remain as a shell to help you switch over. Additionally, some functionality will remain to read and clear engine DTC error codes, graph and analyze your prior datalogs, view your existing vehicle licenses, and access the user guide!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 — 35 and 53 respectively. Written reviews are what separate them: 82% 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. The most recent releases landed on July 23, 2026 and June 11, 2026 respectively.
| Parameter | e85Cal | MHD N55 E |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (35 ratings) — better | 4.6 (53 ratings) |
| Positive reviews | 81.8% of reviews — better | 79.2% of reviews |
| Number of ratings | 35 | 53 — better |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.1 | 10.2 — better |
| Further details — not scored | ||
| Size | 15 MB | 123 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Joe | MHD Tuning UG (haftungsbeschraenkt) |
Customer experience
e85Cal
MHD N55 E
In-app purchases
e85Cal
No in-app purchases
MHD N55 E
No in-app purchases
