Each product here is designed, built and run by Mr. Jackdaw Company. Each entry names the problem, how the product solves it, where to get it and where to ask for help.
01
01Choose My Plane
General aviation catalog and aircraft comparison tool.
An aircraft purchase is a major decision for a private buyer, and the research is a scattered mix of handbook PDFs, forum posts and broker opinions. Manufacturers report performance differently, and operating cost is hard to model without building a spreadsheet.
Choose My Plane keeps one record per aircraft, with every figure traced to the handbook page or price list it came from and conflicting figures recorded but set aside. A buyer filters by mission, compares aircraft side by side and models the cost of ownership.
A day of appointments at different addresses usually means looking up each route, reordering stops by hand and retyping addresses into a navigation app. The calendar already holds every address.
HopStop reads the appointments from Apple Calendar, Google Calendar and any calendar you subscribe to, puts the day in order and computes the drive time between stops. The day shows as a map, and one tap hands each leg to your navigation app. Everything runs on the device.
Apple and Google calendars, plus subscribed calendars
Drive time across every stop
Stop reordering
One-tap handoff to navigation
A mileage log of the days you drive
03
03Pounce
An iPhone and iPad game.
In a line-up game the early moves settle the board, and pattern recognition alone decides the winner.
Pounce lets a player leap an adjacent opponent tile, converting it and landing beyond: a two-tile swing in one move. Early positions stay reversible, so position and tempo both matter until the last move.
Mr. Jackdaw Company
Choose My Plane
HopStop
Pounce