E85 Calculator vs CANflex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
E85 Calculator
This application helps performance enthusiasts and flex-fuel vehicle owners precisely calculate the amounts of E85 and gasoline needed for specific ethanol percentages or octane ratings. It offers both simple and advanced modes for fuel mixing calculations, supporting metric and imperial units.
- Calculate E85 and gasoline amounts
- Target specific ethanol percentages
- Calculate by desired octane rating
- Metric and imperial unit support
- Real-time calculations
- Easy and advanced modes
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E85 Calculator is your essential tool for precision fuel mixing, designed for performance enthusiasts and flex-fuel vehicle owners. KEY FEATURES: - Calculate exact amounts of E85 and gasoline needed - Target specific ethanol percentages (E30, E50, E70, E85) - Calculate by desired octane rating - Support for both metric (liters) and imperial (gallons) units - Real-time calculations with instant updates - Easy and advanced modes for different user needs EASY MODE: - Quick presets for common ethanol targets - Simple tank size selection - Intuitive slider controls for current fuel level - Basic inputs for everyday use ADVANCED MODE: - Precise control over fuel properties - Custom octane ratings input - Detailed ethanol content adjustment - Advanced fuel mixing calculations Perfect for: - Flex-fuel vehicle owners - Performance car enthusiasts - Race car tuners - Anyone mixing E85 with regular gas Get accurate calculations every time and achieve the perfect fuel blend for your vehicle's needs. Whether you're targeting a specific ethanol percentage or octane rating, E85 Calculator provides the precise measurements you need. Safe, simple, and accurate - take the guesswork out of fuel mixing with E85 Calculator.
CANflex
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Free app for use with BMS CANflex 4 in 1 ethanol analyzer
Screenshots
Verdict
The clearest difference is update cadence: CANflex at every 6 months against E85 Calculator's every 29 months. CANflex also leads on iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support 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.
E85 Calculator ships an update every 29 months, CANflex every 6 months. The most recent releases landed on September 8, 2026 and September 15, 2026 respectively.
| Parameter | E85 Calculator | CANflex |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 29 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Sheharyar Irfan | Burger Motorsports, Inc |
In-app purchases
E85 Calculator
No in-app purchases
CANflex
No in-app purchases
