Comparison

Jima Caller ID vs KOI Keyboard

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

Head to head
About

Jima Caller ID

This app helps Hong Kong users combat spam and scam calls by blocking unwanted numbers and identifying suspicious incoming calls. It utilizes a regularly updated database and allows users to contribute to its accuracy. The app also provides scam alerts and customizable blocking options.

Highlights
  • Block and identify incoming calls
  • Query spam call databases
  • Report spam calls
  • Whitelist and blacklist management
  • CSV import/export for lists
  • Customizable blocking actions
  • Automatic database updates
Features
Read full description

Designed for Hong Kong users, Jima Caller Id cope with the spam calls problem : there are too many spam calls, among those some are even scams. 【 Call Blocking & Identification 】「Block」or「Identify」incoming blacklist calls, being blocked calls would go to your voice mail directly, being identified calls would be displayed on the incoming call screen with an identity label 【 Query Spam Call Databases 】 Adopted hkjunkcall.com database, spam calls are collected daily and updating the database. You could offline query whether a call is a spam call 【 Report Spam Call 】Everyone contribute to flight against spam call 【 Whitelist 】add your own numbers to exclude from blocking 【 Blacklist 】add your own number to blocking 【 White & Black list import/export through CSV 】for backup or restore purpose 【 Customisation 】Actions to different category of spam calls could be set to "Block" or "Identify" according to your needs. 【 Auto update 】The app could update the database automatically on the background without your intervention. 【 Scams Alert 】We would also gather news or remainder about phone scams, hope to keep people alert and reduce number of victims Please please see tutorials inside the APP. P.S. This app won Best Smart Hong Kong (Public Sector Information Application) Certificate of Merit, HKICT awards 2016. ===================================================== Please notice: This APP WON'T upload your contacts to external servers. It access to your contacts, since older version of this app (in classic mode) used to import contact into specific contact groups (GROUP), but the iPhone itself does not provide functions to add or delete contact groups, To remove the imported group (for old users upgrade from ios9 to ios10), we must provide this function. ============================================= Auto Renewable Subscription: - No Ads & Database Auto Update [ Title ]: No Ads & Auto Update Subscription [ Length of subscription ]: Monthly, Half year or yearly [ Function ]: No Ads & Unlimited auto background update the junkcall database. Maintain the Jima APP block and identity junk calls always up to date, and app becomes ads free [ Price ]: HKD8 per month OR HKD43 per half year OR HKD83 per year [ DB updates ]: new database delivers almost every everyday, during subscription period, subscription users are being informed by push notification in priority, slience background push notification is also sending to subscription user for triggering background auto update - Payment will be charged to iTunes Account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase - No cancellation of the current subscription is allowed during active subscription period - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. For screenshots and details, please refer to the user guide for how the auto-update auto renewal subscription services: https://hongkongjunkcalls.techmaxapp.com/guide/_jima/subscription-en.jsp Privacy Policy and Terms of Use: http://www.techmaxapp.com/privacy.jsp ---------------------------------------------------------- 專為港人而設既來電顯示App,一路應付香港手提電話用家都有的同樣問題 一 " 香港實在太Q多廣告電話,仲有唔少係騙徒。" 【 阻擋辨識功能 】「 阻擋」或「辨識」陌生來電,被阻擋的電話會直入留言信箱,被辨識的就會在來電畫面顯示出來 (ios10 iphone only)。 【 查詢廣告電話資料庫 】 採用 hkjunkcall的資料庫,內有過萬筆電話資料,每日不斷收集、更新。無需匯入通訊錄。 【 回報廣告電話 】舉報電話,助己助人 【 支援白名單號碼 】就算係資料庫內,都不會被阻擋 【 支援黑名單號碼 】自定你的封鎖名單 【 匯出匯入黑白名單】作為備份,回復 【 喜好設定 】 你可根據你的喜好,對不同類型廣告電話選擇動作為阻擋或辨識。 【 自動更新 】另外,自動更新功能可保持資庫最新,時刻保持有用高效。 詳細請看App內教學。不需要將電話加到通訊錄。

About

KOI Keyboard

Features
Read full description

KOI Keyboard,為繁體中文日常輸入而設。從逐字輸入到中英混打,讓你按自己的習慣打字。 【支援 iPhone Duo】 鍵盤配合內屏、外屏及半開姿態調整。內屏可使用分體鍵盤,或向螢幕邊緣滑動,把鍵盤移至左邊或右邊,搭配側邊手寫區找字。橫直向切換時,鍵盤高度、候選列與主題顯示亦會配合可用空間調整。 【五種中文輸入方式】 支援倉頡、速成、筆劃、廣東話拼音及台灣注音,配合英文輸入,毋須為中英夾雜的訊息不停切換鍵盤。 【打字方式,由你選擇】 支援滑行輸入、連續倉頡及連續速成。候選字、聯想與中文自動修正,幫你更順手地完成句子;各項功能可按需要開關。部分進階功能需要下載額外資源。 【唔記得點拆?手寫搵字】 內建手寫辨識,方便查找不熟悉的字。日常輸入與手寫互相配合,照顧不同打字習慣。 【游標同按鍵,都可以就手】 滑動移動游標,左右微調,上下作較大幅度移動。可調整鍵盤外觀、按鍵大小、聲音與觸感回饋。 【你的鍵盤,你的外觀】 紙墨、櫻桃軟糖、橙潮掌機、午夜爵士、青釉、精鑄銀、霜晶及織絹等材質主題,配合各具特色的按鍵按壓效果。 提供免費外觀,以及可獨立一次性購買的主題。Plus 有效期間可使用全部主題;獨立購買的主題不受 Plus 到期影響。 【KOI Agent】 需要時可使用 Agent 協助回覆、改寫、翻譯、問答及製作圖片與貼圖。Agent 需要網絡連線及完整取用權限,並按功能消耗 Credits;可用功能與費用以 App 內顯示為準。 【清楚的選擇】 核心中文輸入在裝置上處理。你可以自行選擇是否使用雲端 Agent 及 iCloud 同步,亦可在設定中調整各項輸入功能。 Plus 為自動續期訂閱;價格、週期及所包含的權益會在購買前顯示。訂閱由 Apple 帳戶管理,可在 App Store 帳戶設定中取消。其他 App 內購買項目以購買畫面說明為準。 支援:https://koi.rainsday.com/support/ 私隱政策:https://koi.rainsday.com/privacy/ 使用條款:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Jima Caller ID4 screens
KOI Keyboard4 screens

Verdict

The call

The clearest difference is ads: KOI Keyboard at none against Jima Caller ID's shown. KOI Keyboard also leads on update cadence (every 4 days vs every 3 months). Jima Caller ID's advantage is iOS requirement (12.0 vs 16.0). On price, 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. Jima Caller ID sells 4 in-app purchases, starting at $0.99 per month and KOI Keyboard sells 18 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Jima Caller ID ships an update every 3 months, KOI Keyboard every 4 days. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Jima Caller ID versus KOI Keyboard: the parameters behind the verdict, then further details
ParameterJima Caller IDKOI Keyboard
PriceFreeFree
Rating3.9 (14 ratings) — better—
Positive reviews62.5% of reviews—
Number of ratings14 — better—
Update frequencyEvery 3 monthsEvery 4 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPod — betteriPhone
Requires iOS12.0 — better16.0
Further details — not scored
Size20 MB363 MB
Age rating4+4+
DeveloperTechmaxAppChi Yu Cheng

In-app purchases

4 purchases

Jima Caller ID

Subscriptions3
  • 1 Month No Ads & Auto Update$0.991 Month
  • Half Year No Ads & Auto Update$5.496 Months
  • 1 Year No Ads & Auto Update$10.491 Year
One-time1
  • Remove Popup Advertisement$12.99
18 purchases

KOI Keyboard

One-time18
  • 精鑄銀$0.99
  • 霜晶$0.99
  • 織絹$0.99
Show 15 more
  • 稜鏡主題$0.99
  • 脈衝主題$0.99
  • 浮影主題$0.99
  • 座標主題$0.99
  • 翹角主題$0.99
  • 柔丘主題$0.99
  • 隱翹主題$0.99
  • 隱翹・律主題$0.99
  • 隱翹・霓主題$0.99
  • 紙墨$1.99
  • 櫻桃軟糖$1.99
  • 橙潮掌機$1.99
  • 午夜爵士$1.99
  • 青釉$1.99
  • KOI Keyboard Sizing$1.99

Questions

Is Jima Caller ID free?
Jima Caller ID is free to download, with in-app purchases available.
Is KOI Keyboard free?
KOI Keyboard is free to download, with in-app purchases available.
Do Jima Caller ID or KOI Keyboard have ads?
Jima Caller ID shows ads; KOI Keyboard does not.
Which is updated more often, Jima Caller ID or KOI Keyboard?
Jima Caller ID ships an update every 3 months, and KOI Keyboard every 4 days. Most recently, Jima Caller ID was updated on October 29, 2026 and KOI Keyboard on October 31, 2026.

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