Observed arrival · 2026-09-18
Kalko, a Five-Minute Maths Game for Children
A paid-once iPhone game for ages 6–11 covering times tables, addition, subtraction, and division.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Parents supporting primary-school maths practice
- Worth noticing
- The app uses typed answers, five-question rounds, 49 trophies, and a parental gate based on a number written in words.
Field notes
The app organizes practice into three stages: viewing a complete table, answering short rounds with feedback, and typing answers under progressively harder challenge levels. The homepage says tables 1–10 are available by default, with 1–12 available from Settings, and describes separate ladders for each operation. A child profile records accuracy, best combo, perfect quizzes, trophies, and a calendar of practice days.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue