eFlexApp vs 85Blends
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
eFlexApp
Monitor your eFlexFuel device in real-time, with features varying by device version. Adjust settings like language, temperature units, and theme. Track ethanol content, engine temperature, and more, depending on your specific eFlexFuel model.
- Real-time device monitoring
- Adjustable settings (language, temp, theme)
- Ethanol content tracking
- Engine temperature monitoring
- Device status checks
- Bluetooth connectivity
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With eFlexApp you can monitor your eFlexFuel device in real time. eFlexApp recognizes your eFlexFuel device version and offers different features with each product. The app also enables adjusting of eFlexPlus and eFlexPro devices. Change language (English, French, Finnish), temperature unit (°F/°C) and theme (light/dark). eFlexEco, eFlexBlue and eFlexFuel MONITOR: ethanol content, duty cycle, fuel temperature, ambient engine temperature, injector activity & cold enrichment, (engine RPM in eFlexEco Firmware 11.0+) CHECK: device status eFlexPlus Direct, eFlexBlue Direct MONITOR: ethanol content, engine RPM, duty cycle, fuel temperature, ambient engine temperature, injector activity & cold enrichment CHECK: device status eFlexPlus and eFlexMoto Plus MONITOR: ethanol content, engine RPM, duty cycle, fuel temperature, ambient engine temperature, injector activity & cold enrichment ADJUST: RPM based enrichment with driving mode selection (save a custom driving mode setting created with eFlexTuner software) & cold enrichment (save a custom setting created with eFlexTuner software) CHECK: device status, startup information eFlexPro and eFlexMoto Pro MONITOR: ethanol content, engine RPM, duty cycle, fuel temperature, ambient engine temperature, injector activity & cold enrichment ADJUST: RPM based enrichment with driving mode selection (save up to three custom driving mode settings created with eFlexTuner software) & cold enrichment (save a custom setting created with eFlexTuner software) CHECK: device status, startup information eFlexApp communicates with your eFlexFuel device via Bluetooth. Permission to use Bluetooth is required. Please contact support@eflexfuel.com if you have any feedback! Developed by StepOne Tech Ltd
85Blends
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85Blends — Your E85 & Flex-Fuel Companion Whether you’re running a flex-fuel setup, mixing ethanol blends yourself, or just looking for your next E85 fill-up, 85Blends gives you the tools you need in one place. CALCULATE YOUR BLEND Quickly calculate how much E85 and gasoline to add to reach your target ethanol content. Enter your current fuel level, current ethanol percentage, target blend, and tank size — 85Blends handles the math. Use At The Pump for quick calculations while filling up, including partial fills and gas-only adjustments. FIND E85 NEARBY Discover nearby E85 stations using your location, browse station details, save favorites, get directions, and share stations with other drivers. Recent nearby stations can appear immediately when you reopen the app while fresh station data updates in the background. Community Pricing lets drivers submit and share current E85 prices to help keep station information useful for everyone. KEEP TRACK OF YOUR CAR Add your vehicle to Garage and keep important fuel and maintenance information organized. Track: • Fuel fill-ups and ethanol blends • Mileage and fuel history • Maintenance reminders • Vehicle fuel and tank information Cloud Sync helps keep supported app data available across your Apple devices and is included for both Free and Pro users. 85BLENDS PRO Upgrade to Pro for additional tools built for drivers who use E85 regularly: • Intelligent E85 Trip Planner • Interactive Stations map • Map or Classic Stations layouts • Unlimited Garage vehicles • Ad-free experience Trip Planner helps you plan longer drives around available E85 stations, estimate fuel stops, and open your preferred navigation app when you’re ready to drive. BUILT FOR E85 DRIVERS 85Blends is designed to make ethanol blending and E85 station discovery simpler without requiring an account. Whether you’re filling with straight E85, mixing an E30/E50/E70 blend, or keeping track of a flex-fuel vehicle, the tools you need are always close by. Location access is optional and used for nearby station features. Automatic Pump Detection is also optional and can be enabled separately. Support: support@85blends.app Privacy Policy: https://85blends.app/privacy.html 85Blends Pro is an optional auto-renewable subscription. Subscription features and availability may change as the app continues to improve.
Screenshots
Verdict
The clearest difference is ads: eFlexApp at none against 85Blends's shown. eFlexApp also leads on iOS requirement (15.6 vs 17.6). 85Blends's advantage is update cadence (fortnightly vs monthly). On price, 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.
eFlexApp ships an update monthly, 85Blends fortnightly. The most recent releases landed on July 9, 2026 and September 18, 2026 respectively.
| Parameter | eFlexApp | 85Blends |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (8 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.6 — better | 17.6 |
| Further details — not scored | ||
| Size | 58 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | StepOne Tech Ltd | Julian Figueroa |
In-app purchases
eFlexApp
No in-app purchases
85Blends
No in-app purchases








