# Jima Caller ID vs KOI Keyboard

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.

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.

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.

## The numbers

| Metric | Jima Caller ID | KOI Keyboard |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (14 ratings)](https://appshunter.io/ios/app/jima-caller-id/id910656808/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Freemium | — |
| Size | 20 MB | 363 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TechmaxApp](https://appshunter.io/developer/617391262) | [Chi Yu Cheng](https://appshunter.io/developer/1896654870) |

## What reviewers say

### Jima Caller ID

[App page](https://appshunter.io/ios/app/jima-caller-id/id910656808)

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:** macOS Compatibility, Family Sharing

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month No Ads & Auto Update | $0.99 | per month |
| Half Year No Ads & Auto Update | $5.49 | per 6 months |
| 1 Year No Ads & Auto Update | $10.49 | per year |
| Remove Popup Advertisement | $12.99 | one-time |


### KOI Keyboard

[App page](https://appshunter.io/ios/app/koi-keyboard/id6789937180)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 精鑄銀 | $0.99 | one-time |
| 霜晶 | $0.99 | one-time |
| 織絹 | $0.99 | one-time |
| 稜鏡主題 | $0.99 | one-time |
| 脈衝主題 | $0.99 | one-time |
| 浮影主題 | $0.99 | one-time |
| 座標主題 | $0.99 | one-time |
| 翹角主題 | $0.99 | one-time |
| 柔丘主題 | $0.99 | one-time |
| 隱翹主題 | $0.99 | one-time |
| 隱翹・律主題 | $0.99 | one-time |
| 隱翹・霓主題 | $0.99 | one-time |
| 紙墨 | $1.99 | one-time |
| 櫻桃軟糖 | $1.99 | one-time |
| 橙潮掌機 | $1.99 | one-time |
| 午夜爵士 | $1.99 | one-time |
| 青釉 | $1.99 | one-time |
| KOI Keyboard Sizing | $1.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*