# IST+ for Mobile vs 南極蝦鍵盤Lite

The clearest difference is update cadence: 南極蝦鍵盤Lite at every 8 days against IST+ for Mobile's every 8 months. IST+ for Mobile's advantage is iOS requirement (9.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

IST+ for Mobile ships an update every 8 months, 南極蝦鍵盤Lite every 8 days. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | IST+ for Mobile | 南極蝦鍵盤Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lite/id6749168274/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 8 days** |
| Monetization | — | Free |
| Size | 5 MB | 12 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Information Security Technology Corporation](https://appshunter.io/developer/1650535441) | [YU HSIN CHENG](https://appshunter.io/developer/1826530165) |

## What reviewers say

### IST+ for Mobile

[App page](https://appshunter.io/ios/app/ist-plus-for-mobile/id6444602007)

**In-app purchases:** none


### 南極蝦鍵盤Lite

[App page](https://appshunter.io/ios/app/lite/id6749168274)

A lightweight, offline Chinese input method keyboard for iOS. It supports traditional/simplified Chinese and English switching, offering a fast and stable typing experience. All input data remains on your device, ensuring privacy.

**Highlights:** Offline operation, Supports Cangjie input method, Traditional/Simplified Chinese and English switching, Intuitive and beautiful interface, Lightweight design with low latency, Privacy-focused, no data transmission

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IST+ for Mobile free?

IST+ for Mobile is free to download, with no in-app purchases.

### Is 南極蝦鍵盤Lite free?

南極蝦鍵盤Lite is free to download, with no in-app purchases.

### Do IST+ for Mobile or 南極蝦鍵盤Lite have ads?

Neither IST+ for Mobile nor 南極蝦鍵盤Lite shows ads.

### Which is updated more often, IST+ for Mobile or 南極蝦鍵盤Lite?

IST+ for Mobile ships an update every 8 months, and 南極蝦鍵盤Lite every 8 days. Most recently, IST+ for Mobile was updated on September 10, 2026 and 南極蝦鍵盤Lite on September 17, 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.*