Essential Reference Apps

Wikipedia

The Free Encyclopedia

Google Translate

Text, Photo & Voice Translator

Erudite Dictionary Translator

Search, Translate, Learn

Naver Papago - AI Translator

A smart AI translator

LookUp: English Dictionary

Build vocabulary, a word daily

Merriam-Webster Dictionary

Reference

WolframAlpha Classic

Reference

Oxford Dictionary

Offline Vocabulary & Synonyms

The Elements in Action

by Theodore Gray

Night Sky

Guide to Stars,Comets,Meteors

Sky Guide: AR Astronomy Finder

Star gazing night map