Games
Sudoku Combination Finder
Find killer-sudoku combinations from a sum and a cell count.
personal project index
Small tools. Clear jobs.
Games, travel helpers, reading tools, and a few projects that started with a particular problem.
Browse by kind
10 sites on this shelf
Utility
Data Usage Calculator
Work out how much mobile data should be left this month. It saves the limit locally.
Games
Chess Clock
A no-fuss clock for keeping a chess game moving.
Games
Nines Score Tracker
Keep score for Nines with themes you can change to suit the table.
Travel
New Zealand DOC Hike Finder
Find DOC hikes, with offline support for places where the signal disappears.
Travel
France Department Lookup
Turn a French department number into a name and a Wikipedia link.
Travel
Italy Green Zone Finder
Check whether a place in Italy sits in a green zone.
Books
Mistborn Reading Tracker
Track a Mistborn reread and the wait for Era 3.
Finance
PDF to Payment QR Converter
Pull payment details from an invoice and make an EPC QR code.
Health
Pushup Trainer
A three-day pushup plan with set counts, reps, and a rest timer.