# CKC Pinyin Search > Chinese character search tool using a stroke-based corner coding system. (iPhone/iPad app by Ka Ho Tse.) - Source: https://appshunter.io/ios/app/ckc-pinyin-search/id1479285608 (this page in markdown: same URL + `.md`) - Developer: [Ka Ho Tse](https://appshunter.io/developer/1317213773) - Category: Education - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 15.6 · 2 MB - Languages: English, Japanese, Korean, Chinese, Chinese, Vietnamese - Released: 2019-09-13 - Data updated: 2026-06-20 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ckc-pinyin-search/id1479285608/reviews.md ## What is CKC Pinyin Search? CKC Pinyin Search (縱橫拼音) This tool designed by The Education University of Hong Kong (EdUHK) - CKC Centre for the Development of Information Technology in Chinese Language Teaching. Facilitate to search the CKC Code and learn of Chinese characters. For Example, if you search "為", all combinations for the CKC code (including code for variant Chinese character and instant code) will show: 000, 3, 34 and 3400. CKC Chinese Input method is a type of appearance-based coding system. It encodes a Chinese character according to the stroke features of its 4 corners. The sequence is upper left corner, upper right corner, lower left corner and lower right corner (following the shape of the alphabet “Z”) respectively. The strokes and the features of the Chinese character components are classified into 10 groups, represented by 0 through 9. 0 A left-falling stroke or a stroke with left-turning (丿亅). 1 A horizontal stroke or a horizontal rising stroke written from left to right (丨). 2 A vertical stroke or a left slanting stroke (一). 3 A dot or a right-falling stroke (丶 乀). 4 A cross or the radical of “Grass” (十乂卄). 5 The combination of a falling stroke runs through 2 horizontal strokes (≠ キ). 6 A square (口). 7 A corner, 2 upper corners, 2 lower corners or a stroke with right-turning (乚). 8 The shape of the numeral “Eight”(八) in Chinese or its variants (人丷). 9 The shape of the Chinese character which means “Small” (小), its variants and the radical of “Upright Heart”(忄). ## Key features - Search Chinese characters by CKC code - Learn character stroke features - View codes for variant characters - Appearance-based coding system - Developed by EdUHK ## Frequently asked questions about CKC Pinyin Search ### What is CKC Pinyin Search? CKC Pinyin Search is an educational tool developed by The Education University of Hong Kong that helps users search for and learn Chinese characters using a unique appearance-based coding system. It encodes characters based on the stroke features of their four corners. ### How does the CKC coding system work? The CKC coding system encodes a Chinese character based on the stroke features of its four corners: upper left, upper right, lower left, and lower right. These features are classified into 10 groups, represented by numbers 0 through 9. ### Can CKC Pinyin Search find variant Chinese characters? Yes, CKC Pinyin Search can display CKC codes for variant Chinese characters and instant codes, providing a comprehensive search experience. ### What is the learning methodology of CKC Pinyin Search? The app's learning methodology is based on understanding the visual appearance and stroke features of Chinese characters, specifically focusing on the four corners and their corresponding codes. ### Does CKC Pinyin Search track user progress? The provided information does not specify if CKC Pinyin Search includes progress tracking features for users. ### Is CKC Pinyin Search available on Android devices? CKC Pinyin Search is currently available for iPhone and iPad, as indicated by its supported devices. ### How often is CKC Pinyin Search updated? The latest version of CKC Pinyin Search is 1.5.0, and it was last updated on May 23, 2025. This suggests a relatively recent update cycle. ### What do users like about CKC Pinyin Search? With a 5.0-star rating from one review, users likely appreciate the app's specialized functionality for searching and learning Chinese characters through its unique coding system. ## Version history (last 5 releases) ### 1.5.0 — 2025-05-23 - iOS18 bug fixes ### 1.4.0 — 2023-02-09 - Improved stability and bug fixes ### 1.3.1 — 2022-07-07 - Added new column: LSHK - Word detail page can easy link to ckcstrokes - Bug fixed - Repair iOS15 ui bug ### 1.3.0 — 2022-07-05 - Added new column: LSHK - Word detail page can easy link to ckcstrokes - Bug fixed ### 1.2.0 — 2021-02-05 - Support new interface - Japanese, Korean, Vietnamese ## Apps similar to CKC Pinyin Search | App | Rating | Price | Category | | --- | --- | --- | --- | | [Learn Chinese: Verb Forms](https://appshunter.io/ios/app/learn-chinese-verb-forms/id6740090791) | 5.0 (1) | Free | Education | | [Mandarin Pinyin Test Helper](https://appshunter.io/ios/app/mandarin-pinyin-test-helper/id6740727356) | — | Free | Education | | [Kaka Vocabulary- Learn fast](https://appshunter.io/ios/app/kaka-vocabulary-learn-fast/id6746895663) | — | Free | Education | | [Pinyin Coach](https://appshunter.io/ios/app/pinyin-coach/id448231575) | 4.0 (3) | Free | Education | | [Learn German from Alphabets](https://appshunter.io/ios/app/learn-german-from-alphabets/id6621263603) | — | Free | Education | | [e+ 基本乘法](https://appshunter.io/ios/app/e-plus/id1669378573) | — | Free | Education | ## More apps by Ka Ho Tse - [CKC OCR](https://appshunter.io/ios/app/ckc-ocr/id1317213774) - [詩賞品德](https://appshunter.io/ios/app/id1600646891) All apps by Ka Ho Tse: https://appshunter.io/developer/1317213773 ## Related topics [ckc pinyin search](https://appshunter.io/ios/topics/ckc-pinyin-search) · [ckc](https://appshunter.io/ios/topics/ckc) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-20.*