Comparison

CKC OCR vs EdU LibMap

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CKC OCR

This educational tool helps users search for CKC codes and learn Chinese characters. It explains the appearance-based coding system, which encodes characters based on the stroke features of their four corners.

Highlights
  • Search CKC codes for Chinese characters
  • Learn Chinese character stroke features
  • Understand appearance-based coding system
  • View CKC code combinations
  • Educational tool for Chinese language teaching
Features
Read full description

CKC OCR (縱橫識字) 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).

About

EdU LibMap

Read full description

Provides library users with easy to use search and navigate features in finding collections and facilities using Bluetooth beacons.

Screenshots

CKC OCR4 screens
EdU LibMap4 screens

Verdict

The call

The clearest difference is update cadence: CKC OCR at fortnightly against EdU LibMap's every 3 months. On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CKC OCR ships an update fortnightly, EdU LibMap every 3 months. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

Scorecard1 real difference · 9 level
CKC OCR versus EdU LibMap: the parameters behind the verdict, then further details
ParameterCKC OCREdU LibMap
PriceFreeFree
Rating3.3 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyFortnightly — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better16.0
Further details — not scored
Size2 MB12 MB
Age rating4+4+
DeveloperKa Ho TseThe Education University of Hong Kong

In-app purchases

None

CKC OCR

No in-app purchases

None

EdU LibMap

No in-app purchases

Questions

Is CKC OCR free?
CKC OCR is free to download, with no in-app purchases.
Is EdU LibMap free?
EdU LibMap is free to download, with no in-app purchases.
Do CKC OCR or EdU LibMap have ads?
Neither CKC OCR nor EdU LibMap shows ads.
Which is updated more often, CKC OCR or EdU LibMap?
CKC OCR ships an update fortnightly, and EdU LibMap every 3 months. Most recently, CKC OCR was updated on September 17, 2026 and EdU LibMap on September 10, 2026.

Other comparisons