MathFox

Learn early math with Finn the fox — quantities, patterns, shapes and the ten frame. Four sticker albums, fully voiced. Ad-free, offline and completely pressure-free.

MathFox introduces preschoolers to math the playful, pedagogical way – not through rote memorization, but by truly understanding quantities. Finn the fox guides your child with little stories and reads every problem out loud – perfect for children who can't read yet. Fully available in English and German.

FOUR LEARNING PHASES — THE WAY MATH EDUCATION WORKS The learning path follows how early math skills actually develop: Understanding amounts → Splitting numbers → Learning to calculate → Math in everyday life. Every station sits exactly where it belongs.

FROM QUANTITIES TO CALCULATION • Recognize, match and compare amounts • The number range grows with your child: 1–5 → 1–10 → 1–20 → 1–100 • Splitting numbers and number houses: every way to split a number, step by step – the foundation of arithmetic • Plus and minus on the ten frame with blue and red dots • Number friends (pairs that make 10) and crossing ten across two ten frames – smart calculating made visible • Doubling and halving

MATH IN EVERYDAY LIFE • Math stories: Finn tells little stories – your child listens and solves them with pictures (the path to word problems in school) • The clock: reading the time – full hours first, then half and quarter hours, finally even 12/24 ("the clock shows 3 – in the afternoon that's 15:00") • Finn's market stall: paying exact amounts – with coins from 5 cents to 2 euros and bills • Supermarket: shopping, paying with a bill and giving back the right change • Finn's scale: put the same amount on both sides and weigh • Writing numbers: trace the digits 0–9 with your finger

FINN'S HOME With collected stars your child decorates Finn's home: living room, bedroom, kitchen, bathroom and several gardens. Place, move and color furniture, plants, animals and your own stickers – and get the stars back when you put things away.

ADAPTS TO YOUR CHILD An adaptive engine picks the right problems: too hard becomes easier, mastered content rotates its representation. The next number range only opens once your child truly masters the quantities – nobody advances by luck.

REWARDS INSTEAD OF PUNISHMENT Correct answers earn stars and stickers. Wrong answers are never a problem – Finn patiently shows how it works. No hearts, no losing moments, no time pressure.

GAMES FOR YOUR STARS Spend collected stars on cheerful bonus games: number bubbles, apple catch and rocket launch.

MADE FOR PARENTS • Multiple children – picture-based selection, no names or keyboard needed • Daily play time with a real child lock: when time is up, Finn says goodbye and sleeps until tomorrow – parents can adjust the limit anytime • Parents' area protected by a math gate (multiplication – uncrackable for little foxes) • Easy on the eyes: gentle transitions, no flashing or strobe effects • Ad-free, no tracking, no account – everything stays on the device

MathFox is a small indie app by Rainy Castle, built with pedagogical care. Questions or wishes? Write to support@rainycastle.de.