# e85Cal vs LED Performance

The clearest difference is rating: e85Cal at 4.7 against LED Performance's 2.8. e85Cal also leads on in-app purchases (none vs 4) and ads (none vs shown). LED Performance's advantage is update cadence (every 5 weeks vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. LED Performance sells 4 in-app purchases, starting at $24.99 per 3 months. e85Cal asks for nothing beyond the download.

e85Cal holds the better App Store score, 4.7 against 2.8. 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 point the same way: 83% of e85Cal's written reviews are positive against 50% of LED Performance's.

e85Cal ships an update every 4 months, LED Performance every 5 weeks. The most recent releases landed on September 26, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | e85Cal | LED Performance |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (35 ratings)](https://appshunter.io/ios/app/e85cal/id1470313135/reviews)** | [2.8 (6 ratings)](https://appshunter.io/ios/app/led-performance-car-dashboard/id1620198944/reviews) |
| Number of ratings | **35** | 6 |
| Positive reviews | **83.3% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 15 MB | 48 MB |
| Requires iOS | 12.1 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Michael Joe](https://appshunter.io/developer/1132486512) | [TD DYNAMICS CO., LIMITED](https://appshunter.io/developer/1620198946) |

## 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


### LED Performance

[App page](https://appshunter.io/ios/app/led-performance-car-dashboard/id1620198944)

This app displays and records real-time driving data from your vehicle using OBD and GPS. It offers detailed insights into performance metrics and allows interaction with smart hardware for customization. Enhance your driving experience with comprehensive data analysis.

**Highlights:** Real-time driving data display, OBD and GPS data integration, Vehicle performance recording and analysis, Smart hardware interaction, Customizable LED colors, Fuel consumption tracking

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Auto Renow 3 months VIP | $24.99 | per 3 months |
| One month VIP | $12.99 | one-time |
| 3 months VIP | $29.99 | one-time |
| 1 year VIP | $99.99 | one-time |


## Frequently asked questions

### Is e85Cal free?

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

### Is LED Performance free?

LED Performance is free to download, with in-app purchases available.

### Which has better reviews, e85Cal or LED Performance?

e85Cal is rated higher. e85Cal averages 4.7 out of 5 from 35 ratings, while LED Performance averages 2.8 from 6 ratings.

### Do e85Cal or LED Performance have ads?

LED Performance shows ads; e85Cal does not.

### Which is updated more often, e85Cal or LED Performance?

e85Cal ships an update every 4 months, and LED Performance every 5 weeks. Most recently, e85Cal was updated on September 26, 2026 and LED Performance on September 29, 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.*