About

About doubleM

doubleM builds free tools for everyday decisions. Clear inputs, clear math, no accounts.

doubleM makes simple free tools for real-life problems: debt payoff, baby names, pool costs, tournament brackets, moving boxes, and more. Each tool does one job, shows its working, and keeps your data in your browser whenever it can.

Why these tools exist

Each one started from a real-life problem that was harder to work out than it should have been. The pattern is the same: find the obvious question, answer it simply, and leave the detail one layer down for anyone who wants it.

How they are built

Answer the obvious question first, quickly, and show it rather than describe it. Then put the reasons one layer down, out of the way until someone goes looking for them.

You shouldn't have to understand a subject to get a useful answer out of a tool about it. But if you do want to understand it, the explanation should be right there when you're ready.

• Useful before clever
• Simple on top, the details underneath
• Free to use, no accounts
• Clear about how it works
• Nothing you type gets collected

The tools

• DebtPathwayPlan your debt payoff and compare snowball vs. avalanche strategies.
• NameMeldFind baby names both parents can agree on.
• Dreams Pool BudgetEstimate the cost of building and maintaining a backyard pool.
• VolleyRosterPlan your volleyball rotations, then track the game live.
• Move Box & PackEstimate how many moving boxes and supplies you need, room by room.
• Chore Chart BuilderMake a printable weekly chore chart for the fridge, free, no account.
• Pizza Party CalculatorPlan how many pizzas, toppings, drinks, and sides to order for your party.
• TourneyGenBuild a tournament schedule, track results, and crown a champion.
• TV Size CheckSee the right TV size for your room before you buy.

Contact

Questions about a tool, press, or partnerships: hello@doublem.ca