About us
Two people, four numbers
Four Numbers is a free browser puzzle — the kind you open for a 60-second brain snack, not a grind. It's made by two people who like building small, friendly games together.
Who we are
We're not a company or a big studio — just two people who make small, calm games and apps together, and Four Numbers is one of them. We build the sort of things we'd want to use ourselves: quick to start, uncluttered, free, and with no sign-up walls. No accounts, no pop-ups — four cards, four operators, and a target to hit.
The two of us are Nadya Yashchuk and Ivan Lukichev, and we handle everything ourselves — design, development and support. We work remotely, and our projects are officially published as a small sole proprietorship registered in Austria; the formal details live in our Impressum. Because it's just the two of us, everything stays personal — we choose what to build, answer our own email, and shape each update around what players actually ask for.
What Four Numbers is
The game on our home page deals you four number cards. Combine them with +, −, × and ÷, using each card exactly once, and land on exactly your target — 24 is the classic, but you can pick anything up to 100. There are four difficulty levels, hints, a timer and full solutions, and every puzzle is guaranteed solvable. Prefer typing? Enter the whole expression instead of tapping cards.
Stuck on a puzzle from a card game or a math class? Our free solver takes any four numbers and any target and shows every way to get there.
Everything runs in your browser. Your stats — puzzles solved, streak, best time — stay on your device and never leave it.
More games we make
Four Numbers is part of a small family of free number games, all built with the same promise: simple, friendly, no sign-up. If you enjoy this one, try CalcSprint for timed mental-arithmetic sprints, Number Hunt for a quick attention game, or Math Puzzles for crossword-style number grids.
Say hello
We genuinely read what people send us, and a lot of what goes into our games comes from player suggestions. Questions, ideas, bug reports or just a kind word — reach us at contact@nadzeyayashchuk.com. For legal and company details, see our Impressum and privacy policy.