Lumosity
https://www.lumosity.com/en/
Help users improve memory, increase focus and feel sharpness through daily brain training exercises. The app is suitable for anyone of any age or ability level, and will even adapt to your strengths and weaknesses.
User reviews indicate that Lumosity helps with focus, alertness, and cognitive ability
Duolingo
https://www.duolingo.com/?correlationId=dce1ea6c-a846-45fb-be1f-caadc12657f2
A great site for anyone who wants to learn another language. The app offers "small-sized" lessons in over 35 languages, features mini-games and a community of more than 300 million users.
Reviewers suggest Duolingo is a good way to start learning a new language or to refresh your knowledge.
PsychologyCompass
https://psychologycompass.com/app/
The site calls itself a "cognition coach in your pocket" that can help you beat anxiety, improve driving, and boost memory and learning.
The app is designed to strengthen cognitive skills through short weekly lessons that become useful and automatic habits with the practitioner.
Headspace
https://play.google.com/store/apps/details?id=com.getsomeheadspace.android
It offers hundreds of guided meditations on everything from stress to focus to relationships, meditations to aid sleep, short guided meditations, and long sessions.
User reviews claim that the app helps with focus, sleep, and increases productivity.
Ten Percent Happier
It offers meditation lessons and new content on a weekly basis. Reflections, stories and inspiration cover a range of topics, from parenting to anxiety to sleep.
User reviews indicate that the site is a great way to reduce stress, work on anxiety, and learn how to meditate in an easy way.
Insight Timer
https://insighttimer.com/?correlationId=e12a0af8-0b5a-4ba7-82a4-17aa6e9f767f
Featuring workshops, guided meditations, courses, and celebrity speakers, it can help keep your mind occupied while helping you reduce stress and get better sleep.
User reviews indicate that the app has great teachers.
TED
https://www.ted.com/
It boasts over 3,000 free chats in more than 20 languages on its app, which means users can explore countless topics from all over the world.
Inspire Me suggests fresh content, making it possible to learn from world-class thinkers.
Forest
It is a productivity app. Users create their own virtual forests, literally watching their healthy habits grow.
User reviews indicate that people who enjoy decorating games will enjoy using Forest to set new goals and actions for themselves, which can be useful in their lives.
Words With Friends
Helping to build your vocabulary as you play and connect with friends and strangers, Words With Friends challenges players to create words from a selection of random letters.
Reviewers noted that using the app helped make their brains feel more clear and expanded their vocabulary.