A puzzle app is only as honest as its worst grid
Anyone can generate thousands of number grids overnight. The hard part is guaranteeing that each one has exactly one answer and that the answer is reachable by reasoning alone — never by picking a number, seeing where it breaks and backing out. A generator that skips that check produces puzzles that feel unfair without the player ever being able to say why.
So every grid in Rakamly is checked for a single solution and for a full logical path to it before it ships, and the difficulty tiers are set by which deductions that path needs rather than by how many cells were left empty. It is slower to build this way and nobody can see the work, which is precisely why it is worth writing down here.
If a grid can only be finished by guessing, it is not a puzzle. It is a coin toss with extra steps.
sayı ve mantık bulmacası · tamamen çevrimdışı
Rakamly
Fill the grid so that every row, every column and every marked zone obeys the rules — by deduction, one placement at a time. Hundreds of handcrafted puzzles across several difficulty tiers, from gentle starters to grids that will genuinely test your patience. Pencil in candidate notes, take a hint when you are truly stuck, undo a move, and let the app flag conflicts so you always know where you stand. Solve times, streaks and stats track your progress; multiple grid sizes and rule variations keep it fresh long after the basics stop being difficult.
Watch a deduction, don't make one
step 0 of 8 · nothing placed yet
This is a four-by-four warm-up grid, far smaller than anything in the app. Press the button and each empty cell will be filled one at a time — with the row, column and zone that force the answer lit up, so you can see the reasoning rather than the result.
Nothing here is yours to solve: the grid is fixed, the order is fixed, and there is no input. Rakamly is the opposite — a full board, your own notes, your own mistakes to flag, and a timer that only stops when you have earned it.
The app's interface, puzzle names and help text are entirely in Turkish. Uygulama tamamen Türkçedir.
The company behind the label
LunarCove Studio is the name Çağan Güney Dış Ticaret Limited Şirketi publishes its software under. The company is registered in Türkiye, and the code, the artwork, this site and the Google Play account are handled from the address below.
A grid that looks wrong, a hint that fires oddly, or a question about privacy — mail reaches the person who wrote the app.
cove@caganguney.surfLunarCove Studio is a trading name of Çağan Güney Dış Ticaret Limited Şirketi, registered in Türkiye at İskenderpaşa Mahallesi, Çıngıraklı Bostan Sokak No: 42, İç Kapı No: 1, Fatih, İstanbul 34080. Rakamly, its puzzle set and its artwork belong to the company. The Rakamly privacy policy applies to the Android application com.mantikkutu.rakamly. Copyright 2026.