one at a time: word ladder
change one letter at a time
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Turn WARM into COLD one letter at a time. A fresh puzzle every day, endless practice on demand, and the long walk — how many ladders can you climb at par?
Turn one word into another, one letter at a time. Every step has to be a real word: WARM, WARD, CARD, CORD, COLD.
That's the whole game. It's been played on paper since Lewis Carroll invented it in 1877 — this is it done properly on a phone.
THE DAILY
One puzzle a day, the same for everyone. Solve it at par with no hints and the game calls it what it is: flaw · less. Keep your streak alive, and catch up on any day you missed in the archive — though the streak only counts on the day.
ENDLESS
Four sizes of puzzle, dealt fresh whenever you want one. Perfect 4s for a quick, tidy solve where every letter has to move. Gentle warm-ups. Classic, the standard spread. Marathon, seven moves or more, for the long haul.
THE WALK
One continuous ladder: reach the goal at par and it becomes the next puzzle's start. The walk ends the first time you go over. How far can you get?
HOW IT PLAYS
· Par is shown up front — the shortest possible solve, so you always know what good is.
· Wander freely: tap any earlier rung to rewind and try another route.
· Hints will walk you home, but they go on your record.
· Pen mode, for purists: no eraser, moves are final.
· Hold any word — even one in a revealed path — to look it up in the dictionary.
· Share a result as a spoiler-free grid, or send a friend the exact puzzle you just played and see if they can beat your count.
· Game Center leaderboards and achievements, if you opt in.
· Light and dark, or follow the phone.
No ads. No account. No tracking. Nothing leaves your phone. Just a word, four letters, and somewhere to be.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Nick Pyati, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nick Pyati
- Size
- 2.2 MB
- Category
- Word
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Nikhil Pyati
