Every flight logged. Every landing graded.
Greaser is a flight logbook for Microsoft Flight Simulator 2024. A small Windows app reads your flight over SimConnect and streams it here as you fly — so the logbook fills itself, your aircraft appears on a live map, and every touchdown is scored out of 100 against the same stabilised-approach criteria real-world pilots are checked on. And it keeps the books the way a real logbook does: block time, legs, night hours.
Windows 10/11 · MSFS 2024 (2020 works too)
A logbook that writes itself
Nothing to fill in and nothing to remember. Load into a flight, and the departure airport, route, times, distance and fuel are recorded as they happen.
Automatic logbook
Departure and arrival airports are identified from your position — down to the runway you used. Flights are filed shortly after you shut down, with distance, block and airborne time, fuel burned and every landing analysed. Browse them by grade, by airport (ICAO or IATA), night, cross-country, multi-leg or local.
Landing analysis
Every touchdown gets a score out of 100 and a diagram: where you crossed the threshold and how high, where the wheels touched relative to the touchdown zone and the centreline, how steady the last 500 feet were, and how many times you bounced. The target is drawn next to what you flew.
Live map
Your aircraft on a moving map while you fly, with a full instrument panel — speeds, three altitudes, wind, ground track from the wind triangle, fuel burn and endurance. Optional real-world winds-aloft overlay you can query at any point on your route.
Live events
Landings are analysed during the flight, not just after it. Shoot circuits and each one appears in the feed within seconds, with the full analyser card behind it — so you can fix the approach on the next lap instead of next week.
Flight replay
Each filed flight has an altitude-coloured track, interactive charts for speed, vertical speed, glide slope, pitch, bank and wind, drag-to-zoom, and a scrubber that flies the whole thing back.
Fly with friends
Add other pilots, see them on the live map, and share what you choose into a feed your friends can like and comment on — a flight, or a whole trip. Career stats compare hours, distance and landing average per aircraft. Nothing is public by default: sharing is per flight, per trip, per friend.
Graded like a check ride, not a bounce meter
Most landing-rate tools show you one number: the vertical speed at touchdown. That tells you how it felt, not whether it was a good landing — you can float three thousand feet down the runway, touch down at 90 fpm and call it a greaser. Greaser grades the whole approach, using the stabilised-approach elements from the Flight Safety Foundation's ALAR toolkit, the published touchdown zone, and the 50-foot threshold crossing.
| Element | What it measures | Points |
|---|---|---|
| Touchdown | Sink rate at the moment the wheels touch | 25 |
| Touchdown zone | How far down the runway you landed, allowing for a displaced threshold | 16 |
| Sink steadiness | How consistent the descent was from 500 ft down to the flare | 10 |
| Speed steadiness | How consistent the airspeed was over the same window | 10 |
| Bounces | Touchdowns after the first one | 10 |
| Threshold height | Height crossing the threshold, against a window that slides down on a short strip | 8 |
| Centreline | Offset at touchdown, as a fraction of the runway's width | 8 |
| Rollout | Worst centreline offset from touchdown until taxi speed | 7 |
| Glideslope | Share of the final mile and a half flown inside the glide band | 3 |
| 500 ft gate | Sink rate passing 500 ft above the touchdown | 3 |
| Total | Every landing, every flight | 100 |
The bands come from the real world, not from the logbook. They are never widened to make the flights already recorded look better — a score is only worth something while it means what a real judgement would mean. And a landing at a field with no runway data in the database is shown with all its numbers but deliberately left unrated, rather than guessed at.
Every touchdown also gets a grade for how it felt. The logbook's Greasers tab is stricter than the grade alone: it wants soft and in the touchdown zone, which is what a pilot means by the word.
Kept like a real logbook
A connection log tells you how long the software ran. A logbook tells you how long you flew, how many flights that really was, and who was doing the flying. Greaser keeps the second kind — with the rules real logbooks use, measured from the track instead of guessed.
Block time, not connection time
Hours run from the moment the aircraft first moves under its own power to the moment it finally stops — the way a real logbook counts them. Two hours of pressing buttons in a cold-and-dark airliner is not flight time, and Greaser does not pretend it is. The recording's own span is kept alongside.
Legs, the way a pilot counts them
Land, come to a full stop, take off again — that is two logbook entries, even if you never left the simulator. A touch-and-go is one leg, flagged and scored like any landing; a stop-and-go is told apart from an arrival by whether you actually left the runway. All of it measured in the track, not guessed from a timer.
An afternoon of circuits is one entry
EASA's own rule (AMC1 FCL.050): consecutive circuits at the same field fold into a single entry with all their landings — eight rows for eight laps is a list, not a logbook. Fly on somewhere else and the folding stops, exactly where the regulation says it should.
Night in hours, not a flag
Night is computed from the sun's actual elevation along your route — civil twilight, not a clock rule that treats a Norwegian midsummer evening like a tropical one. A flight that takes off in daylight and lands after dark is neither wholly one nor the other, and the hours say so. Day and night landings are counted apart, because they are separate currency.
And one thing no paper logbook could ever tell you — every flight splits its hours into hand-flown and autopilot time, career totals too, so you can find out, empirically, how much of your flying is you and how much is George. An autopilot-flown landing is analysed and scored like any other, but it is marked and left out of your landing average: that number is a claim about you.
Trips read several flights as one journey. Fly around the world in twenty-eight legs and the logbook shows twenty-eight rows — the trip shows one map with the whole route on it, the legs listed underneath and their figures totalled. Grouping never touches the flights themselves: delete a trip and every flight is still there.
Four minutes, once
- Create an accountYou confirm your email address, and you are in.
- Install the Greaser appA small Windows client that talks to the simulator over SimConnect.
- Sign it inSame username and password, and this server's address.
- FlyLoad into a flight — you appear on the live map within seconds.
We built this because we wanted it
We are two friends who have been flying simulators for as long as we can remember — the kind of people who plan a route the night before, check the real weather at the destination, and then argue about who greased it better.
And that argument is where this started. We could never settle it. The flight ended, the sim closed, and everything we had just done was gone — no record of where we went, no way to look back at a landing and say what actually happened on it. The tools we found gave us a number at touchdown and nothing else, which tells you how it felt and nothing about whether it was any good. Float three thousand feet down the runway and you can still touch down beautifully softly.
So we built the thing we had been looking for. Greaser fills in the logbook by itself while you fly, puts your aircraft on a map you can share with the people you fly with, and grades every landing the way the real world does it — against published stabilised-approach criteria, the touchdown zone, the threshold crossing. Not against whatever the other flights in the database happen to look like. If a landing scores badly, that is information, and it is the whole point.
We fly with it every week, and it still tells us things we did not know about our own approaches. If you have ever closed the sim and wondered whether that one was as good as it felt — this is for you.
The usual ones
Does it work with MSFS 2020?
Yes. Greaser is built and tested against Microsoft Flight Simulator 2024, but the client uses SimConnect variables that MSFS 2020 also provides.
Do I need to run anything while I fly?
The Greaser app, on the same PC as the simulator. It sits in the background, uses almost nothing, and starts recording by itself when a flight loads.
Does it work with X-Plane or Prepar3D?
No. The client is written against SimConnect, which is Microsoft Flight Simulator's own interface.
When does my flight appear in the logbook?
It depends on what you do next. Start a new flight — a different aircraft, or a spawn well away from where you were — and the previous one is filed about two minutes later, usually before you have finished your checks. Just quit the sim and it takes about ten minutes.
The difference is deliberate. As long as nothing new has arrived, the flight might not be over — a loading screen, a quick restart, or a batch the app spooled while your connection was down would all look identical to a flight that has ended, and filing early would turn one flight into two. The moment you load in somewhere else that doubt is gone, so the wait is short.
You do not have to wait to see anything either way: while you are flying your aircraft is on the live map, and each landing is analysed on the Live Events page within seconds of the wheels touching.
My question is not here.
Then ask it — send us a message and we will answer. Bug reports, missing aircraft, ideas for what it should do next: all of it is useful, and right now we read every one.
Does a touch-and-go count as a landing?
Yes — it is a landing and it is scored like one, flagged so you can find it again. What it does not do is end the leg: the line real logbooks draw is whether the aeroplane came to a stop, and Greaser draws it in the same place — measured from the track, not from a timer.
Is my flying visible to other people?
Only if you choose. Live position sharing is a switch on your account, filed flights are private until you share them, and a shared flight is readable by accepted friends only.