Reference apps on mobile devices include old-school favorites like dictionaries and technology-based interactive help such as star guides, translators and virtual assistants.
Speak & Translate — Live Voice and Text Translator (99 cents) This app instantly translates your spoken words and speaks them in up to 40 different languages. (Mobilewalla score: 99/100)
Sky Guide: View Stars Night or Day ($1.99) When you point your device toward any section of the sky, this app will show you what heavenly bodies occupy that space. (Score: 99/100)
Tactics Guide for Clash of Clans (Free) This app provides hints, clues and strategic ideas to dominate in the game world of Clash of Clans. (Score: 98/100)
Merriam-Webster Dictionary (Free)* This classic dictionary has a great improvement: Speak your word to find it. It’s great if you are unsure how to spell a word. (Score: 90/100)
Urban Dictionary (Free)* This is a repository of slang words and phrases that proper dictionaries are not interested in … yet. See: “snelfie,” “feeling drake” and “work boyfriend.” (Score: 75/100)
Moon Phase Pro (99 cents) This app has 200 years of moon-phase information available (1900-2100) and daily 3-D simulations of the moon’s current state. (Mobilewalla score: 90/100)
Aldiko Book Reader Premium ($2.99) This reader allows the user to import books from free and paid sources, and includes tools like bookmarking and text search. (Score: 88/100)
Unofficial Wiki Minecraft 2014 (Free) With much of the population under 20 playing Minecraft, a hint or two is needed to help you get ahead in the game. (Score: 84/100)
Audubon Birds Pro ($3.99)* Audubon Birds Pro is the companion for bird watching in North America; 821 species of birds are included and easily searched. (Score: 83/100)
Knots 3D (99 cents)* Scouts and sailors must learn their knots, and now you can, too. Knots 3D shows you the knots from every angle and includes tutorials for 90 knots. (Score: 83/100)
*Available on Apple and Android.