PROGRAMS BY j1k2

MathGymLite is a free lite version of the MathGym app. Just 2 minutes/day and you'll keep your brain sharp and keen! You are asked ten simple math questions with your choice of difficulty. A scoring system challenges you to b

MathGym exercises your brain with math problems of chosen difficulty. Just two minutes a day keeps you sharp! +, -, x, and /, include neg or large numbers, your choice. 1, 2, or 3 ops. A simple scoring system challenges you t

SunMoon computes rise/set times of the sun and moon for your GPS location. Also: solar noon time and sun altitude, sun alt/az, moon phase.Advanced users my like AdvSunMoon: can choose location from map instead of only local

AdvSunMoon: compute the position of Sun & Moon for any date/time/world location. See the rise/set times and alt/az of the sun & moon, including where it will rise/set. Show the moon phase and image, the length of day