Add Up to 21

$0.99

1.3for iPhone, iPad and more

Yonggao Yang

Developer

22.6 MB

Size

Sep 28, 2021

Update Date

Education

Category

Age Rating

App Store Developer Website

Age Rating

Apps in this category do not contain restricted content.

Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Add Up to 21 Screenshots

iPad

iPhone

About Add Up to 21

Poker Blackjack is a popular game related to adding numbers to 21. This app adopts this idea to train your brain to add number fast without paper and pen.
You are challenged to do this as fast as you can within 3 minutes: pick cards from the 7 given number-cards so that the sum of them is 21. Each number-card is a poker card with a value in the range of 1 to 13.
The more you practice, the faster you will be able to pick the right numbers for the sum of 21. Doing this can truly sharpen your skills and performance to computing in brain without using pen and paper.
Your best performance is saved, along with the date and time you created it.
This app is for pre-school, 1st grade, 2nd grade students and senior citizens who want to keep their brain sharp.