Archived App (Last seen on 20 Jul 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This app offers a daily math curriculum for preschoolers, focusing on addition and subtraction within 20. It uses animated stories, catchy songs, and interactive games to make learning fun and engaging. The program is designed by early education experts and aims to build strong foundational math skills.
What's New in 心算口诀天天练（20以内加减）| 哈利学前班学算数系列
5.3
May 7, 2021
修复了一些已知BUG
In-App Purchases
$21.99
全部课程包
哈利学前班：心算口诀天天练—全部课程包
Developer apps
FAQ
What is the short name for 心算口诀天天练（20以内加减）| 哈利学前班学算数系列?
The short name for the app is '哈利学前班'. This name is derived from the full title and is commonly used by users.
How long does it take to complete the math course?
The course is designed to be completed over 96 days, with one small lesson per day. Each day's lesson takes approximately 10 minutes.
What age range is this math app suitable for?
This math app is specifically designed for preschool children aged 2 to 8 years old, providing a foundational math education.
Can I re-download purchased content after deleting the app?
Yes, if you purchased weekly courses in the free version and accidentally deleted the app, you can re-install it and use the 'Restore' function in the parent management interface to re-download your purchased content.
What specific math skills does this app teach?
The app focuses on teaching mixed addition and subtraction within 20. It aims to help children master these calculations through various engaging methods.
What is the learning methodology used in this app?
The app employs an innovative animated teaching method where math concepts are explained through stories featuring cartoon characters. It also uses catchy songs and interactive games to reinforce learning.
Does this app have ads?
No, this app is ad-free. It is designed to provide an uninterrupted learning experience for children.
What devices is this app compatible with?
This app is exclusively designed for iPad 2 and above versions, supporting iPhone, iPad, and iPod devices.
