e85Cal vs Trofii Racing
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.
Trofii Racing
This social drag racing app allows drivers to time their runs with GPS-powered precision, share their performance, and compete on global leaderboards. It also features a vehicle garage to track modifications and built-in tools for racers.
- GPS-powered 0-60, 1/8, and 1/4 mile timing
- Social racing feed to share runs and times
- Global and class-based leaderboards
- Vehicle garage to track mods and specs
- Density altitude calculator
- Horsepower estimator
- 1/4 mile ET predictor
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Trofii Racing is the social drag racing app built for every driver. From weekend warriors to serious competitors. Whether you're chasing your personal best or going head-to-head with racers around the world, Trofii gives you the tools to race, share, and compete. Remote Callouts: Challenge anyone, anywhere. Challenge racers across the country or around the world. Both run at your own location, times sync and compare. Settle the score without being in the same place. GPS-Powered Timing: Connect your Dragy or compatible GPS device for precision 0-60, 1/8 mile, and 1/4 mile timing. Get accurate, consistent data every single run. Social Racing Feed: Share your runs, times, and see what the community is running. Follow your favorite drivers all in a feed built around the racing lifestyle. Leaderboards & Competitions: Compete in global and class based leaderboards. See how your vehicle stacks up against builds all over the globe. Vehicle Garage: Build out your garage with your vehicles, mods, and specs. Your profile tells the story of your build… every upgrade, every run, every trophy. Built-In Racing Tools: Density altitude calculator, horsepower estimator, 1/4 mile ET predictor, E85 station finder and more… everything a serious racer needs, built right in. Built for the Community: Trofii Racing isn't just a timing app it's where automotive enthusiasts live. Connect with drivers who share your passion, find local competition, and track your progress as you push your build further. Download Trofi Racing and start earning your trophies. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: e85Cal at none against Trofii Racing's 10. e85Cal also leads on iOS requirement (12.1 vs 15.1). Trofii Racing's advantage is update cadence (every 4 days vs every 4 months) and rating (5.0 vs 4.7). On price, ratings volume, ads and monetization model 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. Trofii Racing sells 10 in-app purchases, starting at $6.99 per month. e85Cal asks for nothing beyond the download.
Trofii Racing holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 37 and 52 respectively. Written reviews point the same way: 83% of e85Cal's written reviews are positive against 100% of Trofii Racing's.
e85Cal ships an update every 4 months, Trofii Racing every 4 days. Both last shipped on October 24, 2026.
| Parameter | e85Cal | Trofii Racing |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (37 ratings) | 5.0 (52 ratings) — better |
| Positive reviews | 83.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 37 | 52 — better |
| Update frequency | Every 4 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.1 — better | 15.1 |
| Further details — not scored | ||
| Size | 15 MB | 109 MB |
| Age rating | 4+ | 12+ |
| Developer | Michael Joe | Trofii LLC |
Customer experience
e85Cal
Trofii Racing
In-app purchases
e85Cal
No in-app purchases
Trofii Racing
- Trofii Premium7 Days trial$6.991 Month
- Trofii Premium7 Days trial$7.991 Month
- Trofii Premium7 Days trial$49.991 Year
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- Trofii Premium7 Days trial$59.991 Year
- Density Altitude$0.99
- Can I Take 'Em?$0.99
- 1/4 Mile ET$0.99
Show 3 moreShow fewer
- 60-130 MPH$0.99
- Roll Race Predictor$0.99
- All Calculators Pack$14.99
