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Add & Subtract Master — App Store 排名

akira kawakami · Education · 在 App Store 查看

应用简介

开发者在美国 App Store 的完整简介（英文原文）。

Add & Subtract Master is a focused iPhone and iPad practice app for elementary written addition and subtraction. On iPhone, learners keep the full calculation visible while writing with a finger in one enlarged selected cell. On iPad, they can continue writing directly in the calculation cells with Apple Pencil or touch. The app checks the final answer while helping children align digits and build the flow of written calculation. Handwriting is read as written, with a keypad available when recognition needs correction. Only digits corrected during review are stored on the device and used to tune recognition for it. Learning can be turned off, and saved corrections and the personal model can be reset at any time. Missed questions return after a few more problems. Choose 5, 10, 15, or 20 minute sessions for home learning, tutoring, or daily practice. One-time purchase. No ads or additional purchases. Handwriting images, corrections, and the personal recognition model are processed and stored only on the device in use. Nothing is sent off-device.

Add & Subtract Master 不在我们每天抓取的免费榜前 100 名里。可以用下面的实时查询，立刻查看 12 个国家的情况。

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你的浏览器现在就去读取 Apple 的榜单，所以这是实时数据，不是昨天的抓取结果。