Science & Education

Type and Speak
Text to speech

ODK Collect
Data collection tools

Narau
Japanese revision help

Std Atmosphere
Engineering tool

Kanji draw
Kanji recognition

RPN
Reverse Polish Notation Calculator

Ham
Amateur radio tools

aAuroraApp
Space weather info

DriSMo
Driving feedback

Just Sit
Meditation timer

Mileage
A Mileage tracker

Addi
Math calculation environment

Units
Powerful unit converter

Arity
Scientific calculator