RecoatWindow: Second CoatRecoatWindow: Second Coat
The tin assumes mild, dry conditions. A humid arvo on the back deck is not that.
Download on the App Store
Screenshots
Features
A window, not a time
Published recoat guidance comes as broad bands, not as a formula, so RecoatWindow does not make one up. You get a start and an end, and the app shows you which band your conditions landed in.
You enter the tin, not a database
There is no built-in product list. You read the recoat time off the tin in your hand and type it in, so it works on weatherboards, decking or the back fence with whatever brand you picked up this morning. Save it once with a name and it is one tap next time.
Every surface gets its own clock
The hallway wall, the front door, the deck rail. Each runs its own timer, side by side, from the moment you tap just painted. The list tells you at a glance how many are ready and how many are still waiting.
On your Lock Screen
A Live Activity runs the countdown on your Lock Screen, so you can leave the phone on the bench and glance over. The bar goes green as soon as a surface enters its window, and the button next to it logs the next coat.
It will tell you not to paint
Below 10C the film does not form properly, so no figure is shown at all. On a hot dry day you get a warning that the surface may skin over before it levels, rather than a cheerful ready early.
Indoors by default
Indoor mode is the default and makes no network requests at all, because most of the time the weather outside is not the question. Switch to outdoor mode for decking and fences and conditions are fetched for your location.
The tin says "recoat after 4 hours" — but that figure assumes mild, dry conditions.
On a humid afternoon, or in a cold shed in July, the real wait can be twice as long, and nothing tracks it for you.
RecoatWindow takes the recoat time printed on your tin and stretches it to the air you are actually painting in.
WHY A WINDOW, NOT A TIME
Published drying guidance exists as broad bands, not as a formula. So RecoatWindow does not invent one.
You get "ready between 5h20m and 7h10m from now" — a window with a start and an end, not a single promise.
It is an estimate to plan around. The label on your tin always has the final word.
YOU ENTER THE TIN, NOT A DATABASE
There is no built-in product list. You read the recoat time off the tin in your hand and type it in — so RecoatWindow
works with any brand, on weatherboards, decking or the back fence, whatever you picked up this morning. Save it once
with a name and it is one tap next time. No stale manufacturer data, no figure that is wrong for your product.
IT ALWAYS SHOWS THE MATHS
Every estimate opens up:
4h on the tin -> 18C band (x1.0-1.3), RH 72% band (x1.3-2.0) -> 5h12m - 8h36m
You can see exactly which band you landed in and how far conditions are from the 21C / 50% baseline.
No black box, no mystery multiplier.
EVERY SURFACE GETS ITS OWN CLOCK
The hallway wall, the front door, the deck rail — each runs its own timer, side by side, from the moment you
tap "just painted". The list tells you at a glance how many are ready now and how many are still waiting.
ON YOUR LOCK SCREEN
A Live Activity counts the wait down without unlocking your phone. The bar turns green the moment a surface enters
its window, and there is a button right there to log the next coat — which immediately starts the timer for the one
after that. In the Dynamic Island you see whichever surface is closest to ready.
IT WILL TELL YOU NOT TO PAINT
Two conditions are not a matter of waiting longer:
Below 10C — the film does not form properly. RecoatWindow shows no figure at all and says do not recoat.
Hot and very dry — drying too fast is not good news. On a hot, dry day you get a warning that the surface may skin
over before it levels, leaving brush marks, rather than a cheerful "ready early".
INDOORS BY DEFAULT
Indoor mode is the default and you set temperature and humidity by hand, starting from the 21C / 50% baseline.
Switch to outdoor mode — handy for decking, fences and weatherboards — and current conditions are fetched for your
location, still adjustable by hand, with one tap to snap back to live values.
In indoor mode the app makes no network requests at all.
ALSO INSIDE
Home Screen widgets — the next surface to come due, or your top three at a glance
Optional alerts when a surface enters its window, and a heads-up when it drops below 10C
Coat history per surface (first coat 14:20, second coat 19:40), plus a note and a photo
Celsius or Fahrenheit
A plain-English page explaining every band the app uses and where the guidance comes from
PRIVACY AND PRICE
One purchase, everything included. No subscription, no ads, no accounts. Your surfaces and products stay on your
device. In outdoor mode a rounded coordinate is sent to fetch the weather and nothing else — no tracking, no analytics.
RecoatWindow gives you a guide to plan around, not a guarantee about your finish. Conditions vary, surfaces vary,
products vary. Always follow the instructions on your tin.