Apps with 'Challenges' feature
- Learning has never been this social and accessible for so many! Bit-sized videos and fun practice sessions grab your attention and keep you focused, for guaranteed best results!.
- GeoGuessr is a web-based geographic discovery game designed by Anton Wallén, a Swedish IT consultant, released on 9 May 2013. The game uses a semi-randomized...
- Earn points for your life experiences. Find lists that interest you, and mark off what you've done.
- Want to improve your health, lose some weight, get an elegant body shape or, vice versa, become a hefty bodybuilder? Challenge yourself and achieve that!.
- Take part in the exciting adventure of magical worlds with hundreds of levels filled with mind boggling word puzzles.
- An engaging comment system that offers competitive features to increase traffic and engagement for a passionate user-base.
Discontinued
Does not work anymore, not updated to work on newest WordPress. See https://wordpress.org/plugins/burnzone-commenting/
- Freemium
- Online
- Wordpress
- An interesting and addictive game around with a twist.
- Real Dev is a platform to challenge developers with real-life coding tasks. It's also a recruiting assessment tool for business to hire engineers with practical skills.
- Hack This Site is a legal free training ground for users to test and expand their hacking skills.