CoCaChallenge is a fun and rewarding brain-training app designed to help you strengthen your memory through quick daily challenges. Set your own daily goal, play engaging mini-games, and watch your progress grow day by day.

Start by setting your daily training goal:
* Easy - 5 minutes per day
* Medium - 10 minutes per day
* Hard - 20 minutes per day
Complete mini-games every day to reach your goal and keep your streak alive - see how many days in a row you can stay consistent!

Mini-Games
* Twin Hunt - Flip cards in a 4×4 grid to find all matching pairs.
* Recall Chain - Memorize and repeat a growing sequence of images.
* Lost One - Memorize a set of images (3–5). One disappears, and you must pick the missing one.
* Marathon – Play all modes in a loop

View your personal stats in one place:
* Daily streak count
* Total training time (hours and minutes)
* Best scores in each mini-game

Earn achievements for:
* Long streaks
* Total training time
* High scores in mini-games
Collect books - the in-game currency - for completing achievements. Spend your books in the shop to unlock new themed image packs for your games.