# e85Cal vs My Flasher US

The clearest difference is update cadence: My Flasher US at every 9 days against e85Cal's every 4 months. e85Cal's advantage is rating (4.7 vs 4.4) and ratings volume (37 vs 7). On price, ads, in-app purchases and monetization model there is nothing between them.

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

e85Cal holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: e85Cal has 37 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 83% of e85Cal's written reviews are positive against 75% of My Flasher US's.

e85Cal ships an update every 4 months, My Flasher US every 9 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | e85Cal | My Flasher US |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (37 ratings)](https://appshunter.io/ios/app/e85cal/id1470313135/reviews)** | [4.4 (7 ratings)](https://appshunter.io/ios/app/my-flasher-us/id6757482466/reviews) |
| Number of ratings | **37** | 7 |
| Positive reviews | **83.3% of reviews** | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | Free | Free |
| Size | 15 MB | 96 MB |
| Requires iOS | **12.1** | 15.4 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Joe](https://appshunter.io/developer/1132486512) | [SwitchOver Inc.](https://appshunter.io/developer/1859933147) |

## 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


### My Flasher US

[App page](https://appshunter.io/ios/app/my-flasher-us/id6757482466)

This app allows users to tune and optimize their car's ECU through a connected plug-in dongle. It offers features like reading/writing ECU data, seamless dealer communication, and automatic vehicle identification for a personalized tuning experience.

**Highlights:** Read & Write ECU Data, Seamless Dealer Communication, Automatic Vehicle Identification, Secure and Easy-to-Use Interface, ECU Tuning and Optimization

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is e85Cal free?

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

### Is My Flasher US free?

My Flasher US is free to download, with no in-app purchases.

### Which has better reviews, e85Cal or My Flasher US?

e85Cal is rated higher. e85Cal averages 4.7 out of 5 from 37 ratings, while My Flasher US averages 4.4 from 7 ratings.

### Do e85Cal or My Flasher US have ads?

Neither e85Cal nor My Flasher US shows ads.

### Which is updated more often, e85Cal or My Flasher US?

e85Cal ships an update every 4 months, and My Flasher US every 9 days. Most recently, e85Cal was updated on October 24, 2026 and My Flasher US on October 25, 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.*