Korean Hanja Handwriting ! vs Think Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Korean Hanja Handwriting !
Learn to hand-write 2,500 essential Korean Hanja characters stroke by stroke. Explore characters with a spin wheel, save favorites, and access English meanings and real human voice pronunciations. Discover Korean arts and culture through integrated content.
- 2,500 most-used Korean Hanja
- Stroke-by-stroke handwriting instruction
- Spin the wheel exploration
- Add to favorites
- Real human voice pronunciation
- English meanings included
- Offline independent use
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2,500 MOST-USED KOREAN HANJA ! LET'S LEARN HOW TO HAND-WRITE THEM ! THIS APP BREAKS THEM DOWN STROKE BY STROKE ! • SPIN THE WHEEL TO EXPLORE It's so easy and natural. • ADD TO FAVORITES Save the word you like for the future use. • REAL HUMAN VOICE Not robotic. • ENGLISH MEANINGS All of the words have their meanings in English. • KOREAN ARTS & CULTURE Banknotes, coins and poems. • OFF-LINE INDEPENDENT Once downloaded, you don't need internet to use the app. All audios and pictures are integrated within. You can select the word in alphabetical order (English meanings) by clicking “words” in the menu bar. Basic everyday Korean words! Click on the "phonetic" button in the menu bar, you can look up words phonetically. In spoken language, the /r/ sound is sometimes dropped when it is located at the front of a word. For example, 練習(련습) becomes 연습. The checked syllables ending in the stop consonants are /p/, /t/, /k/. For example, 國家(국가) sounds /guk ga/. The final consonant /k/ is checked, stopped abruptly. It is not pronounced. So do not pronounce like /gu+k/. Unlike Japanese, the Korean language doesn’t distinguish long and short vowels. The Hanja is mostly like the traditional Chinese characters. But there are few differences. Korean: 强 敎 郞 凉 爲 Taiwan: 強 教 郎 涼 為 The vowel ㅐ sounds stronger than the loose ㅔ. But in spoken language, the difference is very subtle and interchangeable. Likewise, the ㅒ and ㅖ vowels. e: ㅐ ㅔ ye: ㅒ ㅖ The consonant /ㄹ/ is either /r/ or /l/. For example, /ra/ or /la/ has the same phonetic value. They are equal to 라. The sequence is in the Korean alphabetical order. There are more than 1800 Hanja and 2500 words in the app. 가:家, 佳, 街,... ... 하:下, 夏, 賀,... If you are interested in how to write the Korean words (Hangul), please refer to my another app "Learn Korean Handwriting !" There are over 77 million people who speak Korean worldwide. Its vocabulary is highly influenced by Chinese. The grammar is more similar to Mongolian, Manchu or Japanese languages.
Think Math
Explore math concepts from elementary to high school on a comprehensive map. Easily find specific topics with a three-step navigation system and reinforce learning with linked YouTube videos and textbook-quality typesetting. Ideal for students, parents, and teachers seeking a visual understanding of mathematical connections.
- 802 math concepts map
- Three-step navigation
- Textbook-quality typesetting
- Linked YouTube concept videos
- Grade-level explanations
- Concept cards with basic/advanced views
- Listen and learn audio feature
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Think Math is a concept explorer that lays out every math concept from elementary through high school on a single map. 802 concepts cover the whole curriculum, from counting to calculus. Narrow things down in three steps - area, unit, concept - to find what you need fast. Fractions, roots, exponents and sigma notation are typeset properly, just like a textbook. Concepts are linked to short YouTube concept videos, so you can read an idea and then watch it. KEY FEATURES * 802 concepts across elementary, middle and high school * Three-step navigation: area > unit > concept * Textbook-quality math typesetting (fractions, roots, exponents, sigma) * 700+ English concept videos, linked concept by concept (more added over time) * Explanations and examples written at each grade's level * Concept cards with Basic and Advanced views * Listen and learn: hear any concept read aloud * Wrong-Answer Notes (save photos, handwriting and formulas) * Summit hall - enrichment math beyond the curriculum * Study streaks and daily reminders * In English and Korean - switch any time from the home screen * Layouts for iPhone and iPad (iPad works in portrait and landscape) GREAT FOR * Students who want to see how units connect in the big picture * Test-takers who want a fast concept review * Parents who want to see how math builds grade by grade * Teachers who need a concept map for class * Math lovers who enjoy thinking through proofs and formulas PRIVACY AND USE * No sign-up needed - just open and start. * All study data stays on your device and is never sent to a server. * Ads are shown to keep the app free (Google AdMob). An optional one-time Pro purchase removes ads. * On first launch, iOS asks whether to allow tracking. You can decline and still use every feature. CONTACT hasegi.cs@gmail.com We hope math stops being something to memorize and becomes a journey of thinking, all on a single map.
Screenshots
Verdict
The clearest difference is review sentiment: Think Math at 100% against Korean Hanja Handwriting !'s 0%. Think Math also leads on price (Free vs $1.99) and update cadence (every 3 weeks vs every 18 months). Korean Hanja Handwriting !'s advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Think Math is free to download; Korean Hanja Handwriting ! costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Korean Hanja Handwriting ! ships an update every 18 months, Think Math every 3 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.
| Parameter | Korean Hanja Handwriting ! | Think Math |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 — better | — |
| Update frequency | Every 18 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 98 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | 俊 姜 | Hasegi Inc. |
Customer experience
Korean Hanja Handwriting !
Think Math
In-app purchases
Korean Hanja Handwriting !
No in-app purchases
Think Math
No in-app purchases
Questions
Is Korean Hanja Handwriting ! free?
Is Think Math free?
Do Korean Hanja Handwriting ! or Think Math have ads?
Which is updated more often, Korean Hanja Handwriting ! or Think Math?
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