To the Star: Math
Handwritten curriculum math
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Learn math by writing answers by hand, following Korea's national math curriculum, with animal buddies.
Learn math with Stella and animal buddies!
From first number play through the grade 6 course, one app follows the Korean national math curriculum unit by unit.
To the Star: Math is a learning app where you write answers by hand and work problems out on a scratch pad instead of picking from choices. It covers 79 units and more than 2,000 problem types: from counting and shapes to arithmetic, times tables, fractions, decimals, geometry, measurement, graphs, and word problems. Study one unit in depth, or mix units for review.
■ Built on Korea's national curriculum
Lessons follow the national mathematics curriculum of Korea's Ministry of Education, in the unit order Korean schools use. Grades in the app are Korean school grades, so a topic may come a little earlier or later than in your country. Every problem, hint, and menu is available in English.
■ What each grade covers
· Number play: counting, comparing, patterns, shapes, sorting, making ten, first addition and subtraction
· Grades 1–2: numbers to 10,000, addition and subtraction with regrouping, times tables, length, time, tables and graphs
· Grades 3–4: multiplication and division, fractions and decimals, circles, angles, polygons, capacity and weight, bar and line graphs
· Grades 5–6: factors and multiples, operations with fractions and decimals, area and volume, ratios and proportions, averages and chance
· Times Tables: focused practice on the 2 to 9 tables
■ Handwritten answers and a scratch pad
Answers are written with a finger or a pen. The app reads each digit and lets you fix it right away. The scratch pad beside each problem is for column sums and carrying marks, just like paper. On tablets, the problem and scratch pad sit side by side like an open notebook.
■ Basic, advanced, and olympiad problems
Each unit starts with basic problems and moves on to advanced ones. Grades 1–6 also include olympiad-style problems. Numbers and stories change every time, so problems do not repeat.
■ Concepts you can see and touch
Move stars to make 10, split fraction bars, measure angles, and draw picture graphs. The Help button gives up to three step-by-step hints instead of the answer.
■ Today's Lesson and a mistake notebook
Today's Lesson picks the day's work from progress, weak spots, and review. Missed problems return a few days later as recall problems, and the learning record shows which types are missed most.
■ Animal buddies that grow with Stella
Food earned by studying feeds an animal buddy and decorates its room. Sixteen buddies each have their own story, and 25 mini-games offer a break. At the end of the day, the buddies you studied with come out to say goodbye.
■ Growth records at a glance
See days studied, time, problems solved, and accuracy by day, week, and month. Set a daily goal and a screen-time limit, and share a learning report with a teacher.
■ No ads, and no purchases on learning screens
The app shows no ads. Learning screens never show payment prompts; plans and settings sit in a settings area that opens only after a check question. After consent the app can be used without an account, and linking an account carries progress across devices.
Two new lessons a day are included in every grade, and reviewing missed problems does not count against that. The paid plan adds unlimited new lessons, advanced and olympiad problems, extra family profiles, and printable worksheets. Plans are monthly or yearly auto-renewing subscriptions. Prices and periods are shown in the App Store purchase screen and charged to your Apple ID at confirmation. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends, and can be managed or cancelled anytime in your App Store account settings.
Core lessons work offline. Sign-in, sync, online read-aloud, and plan checks need an internet connection.
Terms of Use: https://hifun.kimhj.com/terms
Privacy Policy: https://hifun.kimhj.com/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Hyoungjin Kim, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- User Content
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Hyoungjin Kim
- Size
- 103.2 MB
- Category
- Education
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English and Korean
- Age Rating
4+
- 4+
- This app is rated 4+ with content restrictions.
Some content may be rated higher, and may therefore be restricted and managed by the developer through in-app controls. - In-App Controls
Parental Controls
- In-App Purchases
Yes
- Annual plan $59.99
- Monthly plan $5.99
- Copyright
- © 2026 하이펀 스튜디오