Free42 vs Puzzle Pace

Free42 is a re-implementation of the HP-42S calculator and the HP-82240 printer. It is a complete rewrite, not using any HP code, and it does not require an HP-42S ROM image. Free42 is an Open Source project. The executables and source code are released under the terms of the GNU General Public License, version 2. All third-party code used in Free42 is either in the public domain, or licensed under terms compatible with GPLv2, or used with the authors' permission.

Time your puzzles. Track your progress. Puzzle Pace is a purpose-built timer for puzzlers. Stop using your phone's stopwatch and start tracking sessions the right way, organized by puzzle, with a full history of every session you've ever timed. HOW IT WORKS Add a puzzle (e.g., "Ravensburger 1000pc Starry Night"). Tap start when you sit down to puzzle. Pause when you take a break, resume when you're back. Stop when you're done for the day, and save your session. That's it. Simple, focused, no distractions. PICK UP WHERE YOU LEFT OFF Big puzzles take days or weeks. Puzzle Pace keeps a complete history of every session, grouped by time period, so you always know how much time you've invested, and how much progress you've made. Filter by puzzle to see just the sessions that matter. Tap any past session to jump right back into timing that puzzle. MANAGE YOUR COLLECTION Create puzzles, rename them, and mark them as completed when you place that final piece. Your completed puzzles are archived so your active list stays clean. UNLOCK STATISTICS (PREMIUM) Upgrade once (no subscription!) to unlock detailed stats across all your puzzles: Total time spent puzzling. Session count and averages. Per-puzzle breakdowns: total time, average session length, longest session. Active vs. completed puzzle tracking. BUILT FOR PUZZLERS Precise timer with tenths-of-second display. Pause and resume freely with no time lost. Discard a session if you started by accident. Manual session entry for times you forgot to start the timer. Clean, warm interface inspired by the puzzle table. YOUR DATA STAYS YOURS No account required. No data leaves your device. Your puzzle history is stored locally and stays completely private. Free to use with your last 15 sessions saved. Upgrade once to unlock unlimited history and statistics — no subscription!