# APE X85 vs e85Cal

The clearest difference is rating: e85Cal at 4.7 against APE X85's 4.2. e85Cal also leads on ratings volume (35 vs 6). APE X85's advantage is review sentiment (100% vs 83%). 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.

e85Cal holds the better App Store score, 4.7 against 4.2. That said, the two scores are not equally well evidenced: e85Cal has 35 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 100% of APE X85's written reviews are positive against 83% of e85Cal's, so the app with the better star average is not the one people write more warmly about.

APE X85 ships an update every 8 months, e85Cal every 4 months. The most recent releases landed on September 24, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | APE X85 | e85Cal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (6 ratings)](https://appshunter.io/ios/app/ape-x85/id1435712370/reviews) | **[4.7 (35 ratings)](https://appshunter.io/ios/app/e85cal/id1470313135/reviews)** |
| Number of ratings | 6 | **35** |
| Positive reviews | **100.0% of reviews** | 83.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 25 MB | 15 MB |
| Requires iOS | **11.0** | 12.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AlternativePerformanceEng](https://appshunter.io/developer/1435712369) | [Michael Joe](https://appshunter.io/developer/1132486512) |

## What reviewers say

### APE X85

[App page](https://appshunter.io/ios/app/ape-x85/id1435712370)

This application enables users to monitor and configure a Flex Fuel Conversion module for gasoline engines, allowing them to run E85 fuel. It offers advanced tuning for ethanol delivery and includes a data logger. The app is also compatible with the APE Multi-gauge module.

**Highlights:** Flex Fuel conversion module monitoring, E85 fuel compatibility, Advanced ethanol delivery tuning, RPM range configuration, Built-in data logger, APE Multi-gauge module support

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is APE X85 free?

APE X85 is free to download, with no in-app purchases.

### Is e85Cal free?

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

### Which has better reviews, APE X85 or e85Cal?

e85Cal is rated higher. APE X85 averages 4.2 out of 5 from 6 ratings, while e85Cal averages 4.7 from 35 ratings.

### Do APE X85 or e85Cal have ads?

Neither APE X85 nor e85Cal shows ads.

### Which is updated more often, APE X85 or e85Cal?

APE X85 ships an update every 8 months, and e85Cal every 4 months. Most recently, APE X85 was updated on September 24, 2026 and e85Cal on September 26, 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.*