Math Challenge Apps
Numbers keep brain sharp.
Math Workout (Memorado)
FREE / $30/yrMental math drills. Senior-friendly.
Best for math drills.
Khan Academy
FREEFree math from basics to algebra to calculus.
Best free learning.
Brilliant
$170/yrLogic + math puzzles. For curious seniors.
Best premium.
Math Riddles
FREEQuick number puzzles. App store games.
Best quick games.
Mensa Brain Training
$10IQ-style puzzles + Mensa branding.
Best Mensa.
Mental math daily
- Calculate restaurant tip in head before reaching for phone.
- Calculate grocery total as you shop.
- Estimate gas mileage in head.
- Mental math while walking (count steps + multiply).
- Help grandkids with homework.
Khan Academy refresh
- Free + comprehensive.
- Brush up basic algebra, geometry.
- Statistics — useful for understanding news.
- Calculus — for retired engineers / scientists who miss it.
- 30 min/day = real progress.
Use it or lose it
Mental math fades fast without practice. 5 min/day mental math = stays sharp. Help grandkids with school = bonus quality time + math practice.