e85Cal vs Tuning
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.
Tuning
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.
- Car tuning module
- Customizable settings
- Eco, Sport, Race driving modes
- Instant software updates
- Product support
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Experience the tuning effect in its most innovative form yet – more power for your car with the tuning module. Fine tune the respective settings to perfectly match your car's specifics and your personal driving style. Map these settings to three easy to the access driving modes Eco, Sport and Race. Download the free Tuning Pro app now and experience your car on a whole new level with our tuning module. The Tuning: Pro app not only allows for a new driving experience but also sets the standard in product support. Updates for your car's tuning configuration and the tuning chip's software will be available instantaneously through the app.
Screenshots
Verdict
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.
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.
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.
| Parameter | e85Cal | Tuning |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (37 ratings) — better | 2.4 (29 ratings) |
| Positive reviews | 83.3% of reviews — better | 20.8% of reviews |
| Number of ratings | 37 — better | 29 |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 15 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Joe | Smart Vehicle Engineering GmbH |
Customer experience
e85Cal
Tuning
In-app purchases
e85Cal
No in-app purchases
Tuning
No in-app purchases
