Fourfold: Four in a Row
2 player board game & puzzles
Only for iPhone
$1.99 · Designed for iPhone. Not verified for macOS.
iPhone
Four in a row across the table. Stand iPhone Duo up like a board: one player inside, one on the cover, each watching the other aim. 5 skins, 120 puzzles, 3 difficulties.
Drop a disc, hear it clack into place, and line up four before they do. Fourfold is four in a row with a twist: your opponent can see where you're aiming before you let go, and so can you.
Play a friend on one screen, play across the table on iPhone Duo, or take on the phone at three levels. On your own, there are 120 puzzles.
WAYS TO PLAY
- Pass and play: two people, one screen
- vs Phone: a computer opponent at Easy, Medium or Hard
- Two sides (iPhone Duo): inside versus outside, each on your own screen
- Puzzles: 120 positions to win in 1, 2 or 3 moves
ON IPHONE DUO
Open the phone and stand it up like a book. One player sits in front of the board on the inner screen; the other plays on the cover screen from the far side, seeing the board from behind, just like a real one: drop a disc on your left and it lands on their right. Close the phone and the cover becomes its own little game box: a full game, or Puzzles.
120 PUZZLES
Each puzzle drops a position on the board and asks you to win in 1, 2 or 3 moves while the phone defends as hard as it can. Every puzzle has exactly one winning first move. Stuck? A hint lights the column.
FIVE SKINS, FIVE WAYS TO DROP
- Classic: plastic discs that bounce and clack
- Neon: glowing rings that streak down and flash the column
- Candy: gummy discs that stretch as they fall, wobble on landing and throw sprinkles
- Walnut: heavy wooden pegs that thunk, shake the board and puff sawdust
- Cosmos: planets with comet tails that land in a burst of stars
Every skin has its own sounds, haptics and its own celebration when someone gets four. Start a new game and the slider pulls: every disc pours out the bottom.
PRIVATE BY DESIGN
No internet, no accounts, no tracking. On iPhone Duo, iOS only lets an open phone show an app on its cover screen while the camera is running, so two-sided play keeps the camera on at low resolution. Every frame is thrown away unseen and nothing is recorded.
One price, no ads, nothing to unlock. Just a board, two colours and a lot of trash talk.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
A clearer App Store page and small under-the-hood improvements.
The developer, Justin McCahill, 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
- Justin McCahill
- Size
- 3.3 MB
- Category
- Board
- Compatibility
Requires iOS 27.0 or later.
- iPhone
Requires iOS 27.0 or later. - Mac
Requires macOS 27.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Justin McCahill
