Reckon: Mental Math

Reckon is a daily gym for mental arithmetic.

Most of us were fluent once. Reckon rebuilds it — one short session a day, no calculator, and no timer counting down at you.

HOW IT WORKS

A short adaptive placement sets a level for each skill separately, rather than one score for all of you. Every session after that mixes four things: the skill you are weakest at, spaced review of what you learned before, an adjacent skill kept warm, and one question a little beyond you.

Wrong answers teach. Instead of only showing the right number, Reckon shows the strategy behind it — round and correct, make a ten, halve and double — so the next one of its kind is easier.

WHAT IS INSIDE

• Adaptive placement, then a level per skill • Sessions of 6, 12, 18 or 24 questions • Spaced review that brings a fact back just before you would forget it • A method library for the techniques worth knowing, readable any time • Every finished session kept, grouped by week • Four themes: Light, Dark, Ledger and Chalk • Home-screen widgets for your streak and what is due • An optional daily reminder — a few a week at most, never on a rest day • Built for iPad, and for the largest text sizes

PRIVATE BY DEFAULT

No account, no sign-up, nothing uploaded. Your progress lives on your device.