# e85Cal vs Tuning

The clearest difference is review sentiment: e85Cal at 83% against Tuning's 21%. e85Cal also leads on rating (4.7 vs 2.4) and iOS requirement (12.1 vs 15.0). On price, ratings volume, update cadence and ads 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 2.4. Both are backed by a comparable volume of ratings — 37 and 29 respectively. Written reviews point the same way: 83% of e85Cal's written reviews are positive against 21% of Tuning's.

e85Cal ships an update every 4 months, Tuning every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | e85Cal | Tuning |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (37 ratings)](https://appshunter.io/ios/app/e85cal/id1470313135/reviews)** | [2.4 (29 ratings)](https://appshunter.io/ios/app/tuning-pro/id1508035080/reviews) |
| Number of ratings | **37** | 29 |
| Positive reviews | **83.3% of reviews** | 20.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 15 MB | 32 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Joe](https://appshunter.io/developer/1132486512) | [Smart Vehicle Engineering GmbH](https://appshunter.io/developer/1508035079) |

## 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


### Tuning

[App page](https://appshunter.io/ios/app/tuning-pro/id1508035080)

Enhance your car's performance with a tuning module. Adjust settings to match your vehicle and driving style, with modes like Eco, Sport, and Race. Receive instant updates for your car's configuration and the tuning chip's software.

**Highlights:** Car tuning module, Customizable settings, Eco, Sport, Race driving modes, Instant software updates, Product support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is e85Cal free?

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

### Is Tuning free?

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

### Which has better reviews, e85Cal or Tuning?

e85Cal is rated higher. e85Cal averages 4.7 out of 5 from 37 ratings, while Tuning averages 2.4 from 29 ratings.

### Do e85Cal or Tuning have ads?

Neither e85Cal nor Tuning shows ads.

### Which is updated more often, e85Cal or Tuning?

e85Cal ships an update every 4 months, and Tuning every 2 months. Most recently, e85Cal was updated on October 24, 2026 and Tuning 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.*