◆ The challenge to the problem! Random questions, you can quiz app unique such as questions only clipped problem. By unravel the crispy a problem, you can do a number of problems!
◆ Check the day-to-day learning degree report card! Check the number of learning progress index and errata to another field! You can do every day of learning management.
◆ Let the efficient review learning with a clip function! Take advantage of the clip features a problem that is worrisome in learning! Problems given the clip, you can check it together.
◆ Let's review the problem you make a mistake in the ! The wrong answer problem in learning you have at any time accumulated. Leverage and as a repeat training of weak field, and but was not aware of a weak field by yourself, it should also help to understand the many problems of the wrong answer count. Check again, let's overcome the weak problem.
◆ listing content From the "Add a problem" in the menu, you will be able to purchase the content of the following in-app billing.