
Clamshell: Pocket Letterpress
Send cards, stickers & tags
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$2.99
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About
A little press. Your own words.
Clamshell turns your iPhone into a pocket letterpress. Pick individual letters from the type case, lock the type, and roll on a fresh coat of ink. Gently close your iPhone Duo, then reopen to reveal your impression. Short mechanical sounds and haptics make each step feel like a little workshop.
MAKE THE FRONT PAGE
Choose Good news, Birthday or Announcement, or write your own masthead, headline and story. Align three separate color plates, then lock, ink and press each one. Watch the colors build into your own newspaper front page.
Accurate registration earns up to 30,000 press points. Take your time and nudge each plate into place, or use guides for a relaxed edition. Post an unguided result to The Registration Room, the optional global Game Center leaderboard.
SEND SOMETHING PERSONAL
• Copy a short press result with your headline, color results, score and edition code, ready to paste into Messages, Discord or another app
• Share a newspaper as a high-resolution image or a one-page A4 PDF
• Make a thank-you, congratulations note, gift tag or place card
• Send a card as a PNG, or copy transparent lettering into compatible apps
• Print six copies of a card on A4, or mix different saved cards on A4 or US Letter sheets
• Save to Files, copy just the words, or open the iPhone's built-in printing options
SET, INK, PRESS
• Build two lines one letter at a time in the composing sticks
• Choose upper and lower case, numbers, punctuation and spaces
• Use Quick write with the system keyboard when your words are ready
• Pick a serif or monospaced type style, four inks, and cotton or kraft paper
• Drag the roller and watch the ink coverage grow; a tap completes the same roll
• Turn press sounds off in About, or use your iPhone's silent setting
MADE FOR THE FOLD
On iPhone Duo, the hinge is part of the press. Every color needs a fresh ink step and a separate close to print. On other supported iPhones, tap Press. If you cannot fold your Duo, choose the clearly labeled alternative and confirm to print without folding. Arrow buttons provide an alternative to dragging a plate.
WORDS WORTH KEEPING
Your drafts and finished prints stay on your iPhone. Search your drawer, reuse a design, and export private backups through Files. Creating prints works offline, with no Clamshell account, advertising, analytics or subscription. The optional leaderboard uses Apple Game Center and an internet connection. Posting is your choice; your headline and story are never sent to Game Center.
One purchase includes every ink, type style, paper stock, edition and output format. All artwork and sounds are original project assets. Clamshell makes digital impressions; printing on paper needs a compatible printer. Sticker handling depends on the receiving app.
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What's New in Clamshell
1.0
November 5, 2026






