BITFOLD
Closed, it's a Bitfold Pocket.
The classic brick, right on iPhone Duo's outer display. D-pad, A and B, Start and Select, a power LED and a speaker grille.
BITFOLD Your phone, folded back to 1989.
A retro game emulator and pocket console for iPhone, made for iPhone Duo. Ten original games are already inside.
No adsNo accountsNo tracking
Landing on the App Store now. Can't wait? Play three of the games right here.
Made for iPhone Duo
One console. Every shape.
Fold it, open it, turn it. Bitfold picks the right console for the shape of your phone, and your game keeps running through every change, with a soft click as the hinge snaps.
Open it, it's a clamshell.
Fold it like a laptop: the game on top, the console's hinge drawn exactly over the real fold, and the controls and a companion screen below.
Clamshell layout, shown here on iPad
No Duo? No problem.
Every iPhone gets the full-screen classic console in portrait, and iPad gets the clamshell. Pick a layout yourself in Settings if you like.
Fold iPhone Duo sideways like a book and the console opens into two pages instead, so nothing ever sits on the crease.
Bitfold Originals
Ten original games. All included.
Every bundled cartridge was written for Bitfold, with its own art, music and characters. Tap a cartridge to see it in play.
They're real cartridge games, so they even run on original handheld hardware. And when you finish all ten, you can bring the cartridges you own.
Twelve editions
Classic
Pick your edition.
Classic grey, glossy Bubblegum, see-through Atomic with a circuit board inside, and nine more. Each comes with a matching Home Screen icon.
ClassicWarm grey, the way it all began.
A screen that feels real
Pixel-sharp. Dot-matrix soft.
A Metal renderer with sharp scaling or pixel-perfect integer scaling, a fine pixel grid, dot-matrix shadows and LCD motion blur. Monochrome games get twelve screen palettes, from pea-soup green to amber.
Pea Soup
Pocket
Backlight
Grayscale
Bubblegum
Ocean
Sunset
Amber
Crimson
Mint
Lavender
Midnight
Power-on ritual
Power on.
The power LED lights up, the Bitfold wordmark drops onto the screen and a two-note chime plays. Slide the power switch to turn off. Every multi-touch control lets you roll your thumb across, with an 8-way D-pad and haptic clicks.
Plays great
Modern conveniences.
The old-school feel, with everything you'd want from a console made today.
Hold to rewind
Missed a jump? Hold the button and play it back.
Fast-forward up to 8×
Pitch-shifted audio, so the music speeds up instead of stuttering.
Four save slots
Save states with thumbnails, plus automatic save and resume.
Battery saves and clocks
Cartridge saves and real-time clocks work like the real thing.
Haptic buttons and rumble
Core Haptics clicks on every press, and rumble for cartridges that shake.
Controllers and keyboards
Pair a Bluetooth game controller, or play on a hardware keyboard.
Classic cheat codes
Enter the codes you remember from the back of a magazine.
A screen you can tune
Sharp or pixel-perfect scaling, a pixel grid, dot-matrix shadows and LCD blur.
Accurate emulation, built on the cycle-accurate, open-source SameBoy core.
Bring your own cartridges
Your cartridges. Your shelf.
Back up cartridges you own with a cartridge reader, then add the .gb, .gbc or .zip files from Files, AirDrop or iCloud Drive. Imported games get label art captured from your first minutes of play. Bitfold doesn't include or download any commercial games.
No account. No sign-up.
Start playing in 3 steps.
STEP 1
Pick your edition
STEP 2
Pick a game
STEP 3
Power on
No ads.No accounts.No tracking.
Bitfold never goes online. Your games, saves and settings stay on your phone, and nothing is collected. Ever.
App privacy: Data Not CollectedRead the privacy policy
Screenshots
Swipe through Bitfold.
Every picture is real: captures of the app and frames rendered by Bitfold's own emulator.
FAQ
Questions, answered.
What is Bitfold?
Bitfold is a retro game console app for iPhone and iPad. It turns the whole screen into a pocket console, with a D-pad, A and B, Start and Select, a power LED and a speaker grille, and it comes with ten original games.
Is Bitfold a retro game emulator?
Yes. Bitfold is a retro handheld emulator built on the cycle-accurate, open-source SameBoy core. It plays the ten Bitfold Originals that come with it, and backups of cartridges you own.
Do I need an iPhone Duo to play?
No. Bitfold runs on iPhone and iPad with iOS 17 or later. On iPhone Duo it goes further: closed, it's a pocket console on the outer display, and open, it becomes a clamshell with the console's hinge drawn over the real fold.
Which games come with Bitfold?
Ten Bitfold Originals: Sprout's Quest, Lantern Keep, Nova Courier, Turbo Lane, Prism Drop, Tidepool Pinball, Pixel Postcards, Pocket Links, Noodle and Brick Bounce. Each is an original game written for Bitfold, with its own art, music and characters.
Can I play my own games?
Yes. Back up cartridges you own with a cartridge reader, then import the .gb, .gbc or .zip files from Files, AirDrop or iCloud Drive. Bitfold doesn't include or download any commercial games.
Does Bitfold collect any data?
No. There are no accounts, analytics, ads or tracking, and the app never connects to the internet. Your games, saves and settings stay on your device.
Does Bitfold work with game controllers?
Yes. Bitfold supports Bluetooth game controllers and hardware keyboards, as well as its own multi-touch controls with haptic clicks.
Is there an iPad version?
Yes. On iPad, Bitfold uses the clamshell layout, with the game on top and the controls below, and you can drag cartridge files straight onto the shelf.
Can I play Bitfold in my browser?
Yes, three of the games. Sprout's Quest, Prism Drop and Noodle run in your browser at bitfold.9io.ai/play for five free minutes a day. The app has all ten, with no time limit.
When can I download Bitfold?
Bitfold is on its way to the App Store. The download link goes on this page the day it's live.
Fold it. Play it.
Bitfold is landing on the App Store for iPhone, iPhone Duo and iPad. Be first to pick your edition.
Made by 9io
Bitfold is built by 9io, a product studio of senior engineers. Our next game, Football Kicks, turns iPhone Duo into a penalty spot.