01
Minimum fuel
MinFu stands for "minimum fuel". The score shows how much fuel or electricity you wasted through the way you drive. Not because of your car. Not because of the weather.
Android app · version 2.0
MinFu
Your driving style is a conscious eco choice.
MinFu shows you, live, how much fuel or electricity your driving wastes, and tells you how to waste less.
Built from your car's physics, GPS, the phone's motion sensor, altitude and weather. No connection to the car needed.
Coming soon to Google Play. For now, MinFu is in closed testing there: send the e-mail address of your Google account (the one you use on Google Play) and you'll be added to the tester list. You need an Android phone.
- No car connection
- 7 drive types
- 12 languages
- No account, no ads
The MinFu philosophy
We score your choices, not your car
MinFu doesn't judge your car, the weather or the traffic. It judges your choices behind the wheel.
Economical driving isn't crawling. It's driving without waste.
02
Every manoeuvre counts
The 2.0 score rates every finished manoeuvre on its own: how you brake, accelerate and take bends, how fast you drive and whether the engine runs at a standstill.
03
Eco isn't crawling
What costs you is waste: accelerating too hard, hard braking, taking bends too fast and too much speed. But getting up to speed too slowly lowers the score too (petrol and diesel).
04
What you can't control doesn't count against you
Headwind, hills, passengers, a full boot, a cold morning. They change the fuel and electricity use you see, while the 2.0 score rates your manoeuvres.
05
MinFu knows your car
MinFu knows your car's mass, air drag, tyres and power, and how warm the engine is. That's why a hard launch on a cold engine costs more fuel, and the air-resistance tip arrives at a speed matched to your car. Good habits get praise on the spot: "Great coasting! Free miles."
How it works
How it works
Four steps. Zero cables.
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1
Set up your car in the Garage
Mass, frontal area, Cd, tyre class from the EU label, power, 2WD or 4x4, and your tyre sets. Want a sharper fuel estimate? Add a few values from your trip computer.
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2
Drive off
MinFu reads GPS, the phone's motion sensor, altitude (the phone's barometer too) and temperature, wind and precipitation from a weather service. Nothing plugs into the car.
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3
MinFu 2.0 rates every manoeuvre
On phones with a motion sensor (gyroscope) that pass the check in the app, MinFu 2.0 rates every finished manoeuvre: braking, accelerating, bends, speed and standstills. Other phones get the simplified rating.
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4
Live score, then the official one
The dial shows the 2.0 score live, and a short tip tells you what to improve. Right after the ride MinFu calculates the official score from the recording of the whole ride and puts it in the history, with the "What lowered the 2.0 score" card.
The score
What counts in your score, and what doesn't
Only your driving moves the score. Everything else changes the fuel figure you see.
Up to you.
It countsBraking: light braking costs little, harder braking more and more.
Accelerating too hard. What counts is acceleration that is too hard, not accelerating as such.
Taking bends too fast. Safety matters more than fuel.
Too much speed. Above 115 km/h the score drops in every car.
Standing with the engine running when the car has no Start-Stop.
Getting up to speed too slowly (petrol and diesel). Eco isn't crawling.
Not up to you.
Changes the fuel figure- Wind and temperature
- Hills and descents
- Passengers and luggage, a roof box and bikes
- The drive, 4x4 included
These change energy use, fuel and CO₂, while the 2.0 score rates your manoeuvres. In the simplified rating the reference driver faces exactly the same conditions.
115 km/h. One line for every car.
Above 115 km/h the score drops in every car, and every car gets the tip "High air resistance. Score drops." A car with high air drag gets advice earlier: "High air resistance. Slow down to save fuel." A roof rack, a box and bikes make that advice come earlier.
Features
What you get
Everything below works without Pro.
Live dial
The 2.0 score for about the last 60 s, 10 min or 1 h, or for the whole ride. Tap to switch.
Short tips
Harsh launch, hard braking, climb, descent, coasting, bends, and air resistance at high speed, tuned to your car. One sentence, one glance.
Resistance breakdown
How much energy goes to air, tyres and hills.
Speed and altitude chart
In the ride details, dots on the speed line mark the moments that lowered the score.
Engine and battery warm-up
MinFu remembers how warm the car was after the last ride. The Heated garage and Warm engine chips cover the rest.
Weather built in
Temperature and wind from a weather service, headwind and tailwind included. Plus the road state, warnings (e.g. freezing rain, fog, strong wind) and a 12-hour forecast. You can also set the road state by hand.
Fuel and CO₂
Estimates, including instant consumption, in l/100 km, LPG, kg of CNG or kWh/100 km, plus CO₂ for comparing rides.
Ride history
A summary of every ride, with the 2.0 score, the "What lowered the 2.0 score" card and the "Why the score dropped" card. Plug-in, LPG and CNG rides also show energy split by source.
A Garage with a full vehicle model
Your own consumption table, speedometer correction and tyre sets, with a reminder to change tyres.
- Petrol
- Diesel
- Hybrid
- Plug-in hybrid
- Electric
- LPG
- CNG
Your ride is not lost
Recording runs in the background, even with the screen off. If Android closes the app mid-drive, the ride is not lost.
Widget
Start a ride with one tap from your home screen.
Eco-Drive School
10 Golden Rules in the City and 10 Golden Rules on the Route.
Your way
Light, dark or automatic theme, text from 60%, metric or imperial units, °C or °F, 12 languages.
Beeps only when it matters
Sound and vibration only on really harsh acceleration or braking.
PRO
MinFu Pro
More convenience, every day.
Buy once. Yours forever.
No subscription. All future Pro updates included.
- Floating overlay over your navigation app, with instant and average consumption and a pause/stop menu (plus a widget that starts straight into overlay mode)
- Black box: the last 10 minutes of driving saved after a hard impact or with one tap, with a report; kept only on your phone, nothing is sent
- Car recognition and autostart over Bluetooth: give each car its own device and MinFu picks the car you are driving by itself, then offers to start the ride
- Unlimited cars in the Garage, with a default car MinFu returns to after a break of more than an hour
- After a ride above 115 km/h: what it cost you in fuel or electricity, and how many minutes it saved
- Share your ride's score as a picture, with no map and no places
- Weekly trend and badges
- Automatic backup after every ride to a file you choose, for example on your Google Drive, plus backup export/import
New in version 2.0
MinFu 2.0: a new driving score
A new scoring engine. Every manoeuvre rated on its own.
Since version 2.0 MinFu calculates the 2.0 score on phones with a motion sensor (gyroscope) that pass the check in the app. The score still shows how much fuel or electricity you wasted through the way you drive, and only what is up to you affects it.
Simplified rating
Phones without a gyroscope or without a passed sensor check, and rides from before version 2.0. MinFu works it out against a virtual reference driver who drives the same car in the same conditions, but smoothly. It is marked "Simplified rating".
The 2.0 score
Phones with a motion sensor (gyroscope) that pass the check in the app. Every finished manoeuvre rated on its own, the score live on the dial, and the official score in your history right after the ride.
01
What lowered the 2.0 score
After every ride a card shows what lowered the score: braking, accelerating too hard, corners, too much speed, standing with the engine running and getting up to speed too slowly. The bars show what cost the most.
02
Every manoeuvre on its own
The dial rates finished manoeuvres, so it reacts with a slight delay. A small caption under the number tells how many seconds the rating is delayed.
03
No penalty for what could not be avoided
MinFu 2.0 does not penalise what could not be avoided. The score is affected only by what is up to you.
04
Fair braking
Light braking costs little, harder braking more and more.
05
Safety matters more than fuel
Taking bends too fast lowers the score, because safety matters more than fuel. After bends a short tip shows how you took them.
06
Refined on real roads
A model refined on real rides and real drivers' assessments.
You get the MinFu 2.0 score without Pro, on phones with a motion sensor (gyroscope) that pass the check in the app.
The "What lowered the 2.0 score" and "Why the score dropped" cards are free as well.
This is version 2.0 of a model that keeps improving. OBD-II support, meaning data straight from the car's computer, is planned.
Got an idea or a comment on how MinFu scores your driving? Write to us: piotrekmal79@gmail.com
Screens
MinFu in action
Screens from MinFu 2.0.
Cockpit
The Focused view while driving: a large dial with the 2.0 score, the acceleration bar, a tip in a slim bar and the weather strip.
Ride details
The 2.0 score and the "What lowered the 2.0 score" card with bars and no numbers. Free.
Before the ride
Weather for the next hours with one warning, engine warm-up, passengers, luggage, roof rack, box and bikes. MinFu knows what you're carrying.
Garage
A full model of your car and its tyre sets: summer, winter or all-season, with the fitted set marked. MinFu reminds you when it is time to change tyres.
Electric car · air resistance
Advice tuned to the car
In an electric car with high air drag, MinFu suggests: "Slow down to extend range."
Privacy
Your rides stay with you
- No account
- No ads
- No analytics
- Rides stay on your phone
No account, no ads, no analytics. Rides stay on your phone. The only connection MinFu itself makes sends an approximate position to MET Norway to fetch the weather (temperature, wind, precipitation and a short forecast); apart from that, the Google Play payment module built into the app connects to Google by itself. For the weather and the road's state, including the road's state prepared, if you agree, for the way back from a long drive, MinFu keeps the approximate places it fetched the forecast for (rounded to about 5 km) only on the phone, for the number of days set in the app (14 by default). Raw ride data stays on the phone and is never sent anywhere.
FAQ
Questions and answers
Do I need to plug anything into the car?
No. MinFu uses the phone's GPS, its motion sensor, optionally its barometer, and the weather. No adapters, no cables. OBD-II support, meaning data straight from the car's computer, is planned.
Which cars does it work with?
With any of the 7 drive types: petrol, diesel, hybrid, plug-in hybrid, electric, LPG and CNG. In the Garage you set mass, frontal area, Cd, tyre class from the EU label, power and 2WD or 4x4. More than one car in the Garage is a Pro feature.
Can I enter my own car's consumption?
Yes, and it's worth it. In the consumption table you enter real consumption at a few speeds, in your drive's unit: litres, litres of LPG, kg of CNG or kWh. A few values from the trip computer are enough. The table sharpens the fuel estimate, and with at least 2 values a speedometer correction appears.
Does the app have to stay on screen?
No. MinFu records the ride in the background, even with the screen off. Meanwhile you see a "MinFu - ride in progress" notification, which is why, on Android 13 and newer, the app asks for notification permission. After 3 minutes without movement the measurement pauses by itself, and it resumes by itself when you drive off. If Android closes the app mid-drive, you can continue the ride within 5 minutes, and saving loses at most the last 15 seconds.
Which phones and languages?
Android 7.0 or newer. The 2.0 score works on phones with a motion sensor (gyroscope) that pass the check in the app; other phones get the simplified rating. MinFu speaks 12 languages: Polish, English, German, French, Spanish, Portuguese, Turkish, Czech, Slovak, Russian, Chinese and Arabic.
Is MinFu free?
Yes. The driving score, including the 2.0 score with the "What lowered the 2.0 score" and "Why the score dropped" cards, tips, Garage, ride history, Eco-Drive School and widget cost nothing. MinFu Pro: buy once and it's yours forever, with all future Pro updates included. No subscription.
Does my data leave the phone?
Your rides don't. MinFu works with no account, no ads and no analytics. The only connection MinFu itself makes sends an approximate position to MET Norway to fetch the weather (temperature, wind, precipitation and a short forecast), usually at most about once an hour or when you are about 20 km from the place of the last forecast. Apart from that, the Google Play payment module built into the app connects to Google by itself. Without weather MinFu still works: it assumes a temperature and tells you so before the ride.
How accurate are the numbers?
Consumption and CO₂ are estimates. They are most accurate with the consumption table filled in, and CO₂ is meant for comparing rides, not for accounting. OBD-II support, meaning data straight from the car's computer, is planned.
What are the 2.0 score and the "Simplified rating"?
MinFu calculates the 2.0 score on phones with a motion sensor (gyroscope) that pass the check in the app: every finished manoeuvre is rated on its own, and right after the ride the official score goes into the history. When the manoeuvres could not be read reliably from a ride, you see "Not enough data to rate the driving style" instead of a score. A phone without a gyroscope or one that does not pass the sensor check, and rides from before version 2.0, get the simplified rating, marked "Simplified rating". It is worked out against a virtual reference driver who drives the same car in the same conditions, but smoothly. We're refining the model on real rides and real drivers' assessments.
See how much you waste. Then waste less.
MinFu 2.0 for Android. Pro: buy once, yours forever, no subscription.
Coming soon to Google Play. For now, MinFu is in closed testing there: send the e-mail address of your Google account (the one you use on Google Play) and you'll be added to the tester list. You need an Android phone.
Safety first: MinFu is designed to be glanced at, not operated, while driving. Keep your eyes on the road.
Got a question, an idea or feedback on your score? Write to piotrekmal79@gmail.com