Apps

Apps by Keelspan

Software for iPad, iPhone and Mac. Each one is held to the same standard: calm to use, exact in the details, and respectful of the person using it.

Sasha's Puzzles

On the App Store

Cozy jigsaw puzzles for every day.

A quiet jigsaw table for iPhone, iPad and Mac. Pick a picture and the number of pieces, then solve at your own pace. The table saves itself, so you can leave a puzzle halfway and come back a week later.

  • Free
  • No ads
  • No in-app purchases
  • Works offline
  • 10 languages
  • 175 countries
Platform
iPhone · iPad · Mac
Requires
iOS 18, iPadOS 18 or macOS 15 and later
View on the App Store

6 screenshots · scroll or tap to enlarge

  • A new 150-piece puzzle every day, and a secret picture after seven days in a row
  • 170 photos, plus your own pictures cut into 12 to 800 pieces
  • Real interlocking pieces with matching edges
  • Unfinished puzzles move between iPhone, iPad and Mac through iCloud
  • Apple Pencil on iPad, keyboard shortcuts on Mac, leaderboards in Game Center

ARM64 Studio

In development

An IDE for AArch64 assembly on Apple silicon.

Write, build and debug ARM64 assembly on a Mac with an M-series processor. Programs run and are debugged on the real hardware.

Platform
Mac
Requires
macOS 14 or later, Apple silicon
  • Builds with clang
  • Debugs on real hardware through debugserver
  • Built-in disassembler
  • Instruction bitfield view
  • CPU capability panel
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