ChallengeLab is a free lifestyle application developed by CHTC Tech. It offers a variety of tests on different subjects such as football, TV series, celebrities, history, and more. With hundreds of specially crafted tests, you can test your knowledge and skills in various categories.

The application provides continuously updated and revised tests. You can find different entertaining and challenging tests in the different test schemes. You can test your timing and knowledge in memory tests that will test your photographic memory or see how far you can go in specially crafted progressive tests. You can also find out if you know your favorite celebrity well enough or if you are a connoisseur of TV series.

ChallengeLab provides interesting tests such as "How Will You Look When You're Old?", "Which Hairstyle Does Your Soul Represent?", "We Will Test Your Spider-Man Knowledge in 6 Funny Questions!", "What Kind Of Tattoo Should You Get?", "What Kind Of Intelligence Do You Have?", and "In Which Country Will You Find The Love Of Your Life?"

However, it is important to note that the application offers a subscription service, which starts at $11.99 per month. The subscription automatically renews unless auto-renew is turned off 24-hours before the end of the current period. You can manage subscriptions through your Google Play Account Settings.