Church: scripture golf, toddler touch and drag, LDS picture pair, priesthood ordinances and blessings, and Mountain of the Lord. Maybe LD hide and seek.
Games: wordament, and geek trivia. Nesbox. Nesbox is a must have it allows you to download and play roms for Nintendo, SNES, and sega. VGGC8+ lets you play roms for Gameboy.
School: flashquiz.
Misc: I use textnow for texting but I don't have a US phone number, if I did Viber. I really like the X-box music app. The bing food and drink app is great, especially the hands free mode (try it, you'll like it). Overdrive if you want to download audiobooks for free from your library. WatchESPN.