A window at sunset
The window lights only after the real sunset where you are, once the day's deed is done. Tomorrow's window can't be opened today.
Stillcraft / Apps / The House Opposite
The House Opposite is an advent calendar you look at like a window across the yard. A five-storey house stands there with 24 dark windows. Each December evening has a small real deed: call someone you've been meaning to call, step into the yard after dark for five minutes. Do it, and after the real sunset in your town one window lights up. Behind it is a room drawn in code: its people, their December, things to tap, a hidden clue and sometimes a mandarin. Someone in the house is leaving presents at the doors. Ten neighbours are suspects, the clues sharpen slowly, and the answer comes together only around the 23rd. Every lit window hangs a glass ornament on your tree, and any window can also hide a real present, for you or for someone dear. Free, no ads, no accounts, no internet.
Android 9.0+ · Free · English & Русский
The window lights only after the real sunset where you are, once the day's deed is done. Tomorrow's window can't be opened today.
Twenty-four rooms drawn in code: a pianist at his piano, twins, a night taxi driver, a cat called Bagel. Tap the things in them to find notes, a clue and a mandarin.
Someone leaves presents at the doors. Ten suspects with six habits each; the clues start vague and sharpen towards the 21st–23rd. Strike names out in the notebook and name the culprit on the 24th.
The culprit and the order of the clues change from season to season, and each culprit has their own ending.
Every lit window hangs a glass ornament: a ball, an icicle, a rocket, a little house. A found mandarin makes it a granny's ornament with a gold cap.
Missed an evening? Light the window with a candle. A spark on a Sunday earns one. Nothing burns down.
As in an ordinary advent calendar, any window can hide a present: something to find, a treat, a note or a deed. Making it for someone else? The list is sealed so they can't peek.
Start on the first of December or right now: twenty-four evenings in a row work any time of year. The finished tree goes up to the shelf.








| Habit | What a clue says | How sharp |
|---|---|---|
| Handwriting | sweeping, block capitals, copybook-round, curly… | vague at first, exact near the end |
| Wrapping | string, an evening paper, sheet music, a city map… | rules out one or two |
| Footprints | felt boots, heels, trainers, a walking stick… | in the snow by the doors |
| Hour | three at night, six in the morning… | from the logs and the creaking door |
| Gait | a limp, skipping, humming… | seen from the windows |
| Smell | sealing wax, rosin, coffee, machine oil… | noses don't lie |
Everything stays on the phone: the app has no internet permission.
JDK 17+ (Android Studio's bundled JBR works) and the Android SDK. Kotlin, Jetpack Compose; the house, the rooms, the people, the tree and the ornaments are drawn in code.
git clone https://github.com/bigdevwhale/opposite.git cd opposite ./gradlew testDebugUnitTest assembleDebug ./gradlew assembleDebug -Pdemo # app.opposite.demo: a season ten evenings in ./gradlew testDebugUnitTest -Prender --tests '*RenderScreens*' # screens to PNG
Yes. Choose 'tonight' when you start, and the 24 windows go one evening at a time from today.
The window waits. Light it later with a candle; you earn candles for sparks on Sundays.
Then please tell us: Settings has buttons to report a bug or suggest an idea through the StillCraft bot.
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