Alternatives to Curiosity

	Curiosity Version: 2.3.4 Join millions who never stop learning!	Duolingo Version: 5.73.2 Learn Spanish, French, German, Italian, English and more languages for free.	NASA App Version: 2.05 The Official NASA app for Android	Lumosity Version: 2021.08.27.2110334 Train your cognition with games that target memory, reasoning, and more.
LICENSE	Free	Free	Free	Free
LANGUAGE	English	English	English	English
OS	Android	Android	Android	Android
Author	Curiosity.com	Duolingo	NASA	Lumos Labs, Inc.
Rating	4.5/5 (59)	4.3/5 (48)	4.5/5 (73)	4.0/5 (95)