Comparison

CKC Pinyin Search vs Tree+

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

Head to head
About

CKC Pinyin Search

This educational tool helps users search for and learn Chinese characters using a unique appearance-based coding system. It decodes characters based on stroke features in their four corners, providing CKC codes for standard and variant forms.

Highlights
  • Search Chinese characters by CKC code
  • Learn character stroke features
  • View codes for variant characters
  • Appearance-based coding system
  • Developed by EdUHK
Features
Read full description

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).

About

Tree+

A curated streaming platform featuring visionary films, shorts, and original content focused on climate, justice, consciousness, and the future of life. Discover impactful cinema that informs and inspires.

Highlights
  • Curated streaming platform
  • Films, shorts, and original content
  • Focus on climate and justice
  • Visionary storytelling
  • No endless scroll
  • Informs and inspires
Read full description

Tree+ is your portal to visionary storytelling — a curated streaming platform for films, shorts, and original content that explore climate, justice, consciousness, and the future of life on Earth. From the creators of Ice on Fire, Urban Roots, The Arrow of Time and Legion 44, Tree+ delivers cinema that informs, inspires, and ignites. Watch frontline documentaries, poetic dispatches, and creative calls to action from artists and changemakers around the world. No noise. No endless scroll. Just stories that matter — chosen to move you and move the world. To access all features and content you can subscribe to Tree+ on a monthly or yearly basis with an auto-renewing subscription right inside the app. * Pricing can vary by region and will be confirmed before purchase in the app. In app subscriptions will automatically renew at the end of their cycle. All payments will be paid through your iTunes Account and may be managed under Account Settings after the initial payment. Subscription payments will automatically renew unless deactivated at least 24-hours before the end of the current cycle. Your account will be charged for renewal at least 24-hours prior to the end of the current cycle. Any unused portion of your free trial will be forfeited upon payment. Cancellations are incurred by disabling auto-renewal. Terms of Service: https://watch.treemedia.com/terms Privacy Policy: https://watch.treemedia.com/privacy

Screenshots

CKC Pinyin Search4 screens
Tree+4 screens

Verdict

The call

The clearest difference is in-app purchases: CKC Pinyin Search at none against Tree+'s 8. On price, rating, ratings volume and update cadence 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. Tree+ sells 8 in-app purchases, starting at $8.49 per month. CKC Pinyin Search asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for CKC Pinyin Search against 5.0 for Tree+. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

CKC Pinyin Search ships an update every 9 months, Tree+ every 7 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 7 level
CKC Pinyin Search versus Tree+: the parameters behind the verdict, then further details
ParameterCKC Pinyin SearchTree+
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 9 monthsEvery 7 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Apple TV
Requires iOS15.6 — better16.6
Further details — not scored
Size2 MB1 MB
Age rating4+4+
DeveloperKa Ho TseTree Media Group

Customer experience

CKC Pinyin Search

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Tree+

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

CKC Pinyin Search

No in-app purchases

8 purchases

Tree+

Subscriptions2
  • Tree+ Monthly14 Days trial$8.491 Month
  • Tree+ Yearly14 Days trial$89.991 Year
One-time6
  • Tree - 399$3.99
  • Tree - 699$6.99
  • Tree - 1199$11.99
Show 3 more
  • Tree - 1499$14.99
  • Tree - 1999$19.99
  • Tree - 2499$24.99

Questions

Is CKC Pinyin Search free?
CKC Pinyin Search is free to download, with no in-app purchases.
Is Tree+ free?
Tree+ is free to download, with in-app purchases available.
Which has better reviews, CKC Pinyin Search or Tree+?
CKC Pinyin Search and Tree+ are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do CKC Pinyin Search or Tree+ have ads?
Neither CKC Pinyin Search nor Tree+ shows ads.
Which is updated more often, CKC Pinyin Search or Tree+?
CKC Pinyin Search ships an update every 9 months, and Tree+ every 7 months. Most recently, CKC Pinyin Search was updated on November 3, 2026 and Tree+ on October 30, 2026.

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