Boostane vs E85 Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Boostane
Calculate the precise amount of octane booster needed to achieve your desired fuel octane. Save calculations, share them via email or text, and get estimated horsepower gains.
- Calculate required octane booster amount
- Save calculations to favorites
- Share calculations via email or text
- Estimate horsepower gains
- User-friendly design
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Welcome to the new and innovative app for BOOSTane Octane Booster! This app will help you calculate the amount of BOOSTane that you will need in order to reach a desired octane. Features Include: · Save Calculations to Favorites · Email or Text Your Calculations · Get Estimated Horsepower for Calculations · Great Design and Easy to Use!
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.
Screenshots
Verdict
The clearest difference is rating: Boostane at 2.0 against E85 Calculator's 1.0. Boostane also leads on ratings volume (27 vs 1) and update cadence (every 14 months vs every 29 months). E85 Calculator's advantage is review sentiment (25% vs 7%). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Boostane holds the better App Store score, 2.0 against 1.0. That said, the two scores are not equally well evidenced: Boostane has 27 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 7% of Boostane's written reviews are positive against 25% of E85 Calculator's, so the app with the better star average is not the one people write more warmly about.
Boostane ships an update every 14 months, E85 Calculator every 29 months. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | Boostane | E85 Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (27 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 6.9% of reviews | 25.0% of reviews — better |
| Number of ratings | 27 — better | 1 |
| Update frequency | Every 14 months — better | Every 29 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 10.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 38 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | BOOSTane, LLC | Sheharyar Irfan |
Customer experience
Boostane
E85 Calculator
In-app purchases
Boostane
No in-app purchases
E85 Calculator
No in-app purchases
