# KAI KeyboardAI vs Plain

The clearest difference is update cadence: KAI KeyboardAI at every 3 weeks against Plain's every 4 months. On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. KAI KeyboardAI sells 2 in-app purchases, starting at $4.99 per 7 days and Plain sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

KAI KeyboardAI ships an update every 3 weeks, Plain every 4 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | KAI KeyboardAI | Plain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (16 ratings)](https://appshunter.io/ios/app/kai-keyboardai/id6448476817/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | **53.8% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 35 MB | 26 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Akshat Giri LLC](https://appshunter.io/developer/1690508953) | [MOBIVERSITE YAZILIM BILISIM REKLAM VE DANISMANLIK HIZMETLERI SANAYI TICARET LIMITED STI](https://appshunter.io/developer/968440561) |

## What reviewers say

### KAI KeyboardAI

[App page](https://appshunter.io/ios/app/kai-keyboardai/id6448476817)

Enhance your typing with an AI-powered keyboard that offers smart suggestions, contextual responses, and multilingual support. Improve professional communication and craft engaging messages for any situation, all accessible from your keyboard.

**Highlights:** AI-powered writing suggestions, Contextual response generation, Multilingual translation, Professional writing assistance, Dating message crafting, Quick keyboard access

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access | $4.99 | per 7 days |
| All Access | $39.99 | per year |


### Plain

[App page](https://appshunter.io/ios/app/plain-ai-keyboard/id6467874401)

This advanced AI-powered keyboard acts as your personal text assistant, offering features like grammar correction, translation, and tone adjustment. It helps you write, communicate, and generate text more effectively across all your applications.

**Highlights:** Grammar and spell check, Seamless translation, AI-powered answers, Tone adjustment, Text paraphrasing, Response generation, Text continuation, Synonym finder

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week PRO | $4.99 | per 7 days |
| 1 Month PRO | $9.99 | per month |
| 1 Year PRO | $39.99 | per year |


## Frequently asked questions

### Is KAI KeyboardAI free?

KAI KeyboardAI is free to download, with in-app purchases available.

### Is Plain free?

Plain is free to download, with in-app purchases available.

### Do KAI KeyboardAI or Plain have ads?

Neither KAI KeyboardAI nor Plain shows ads.

### Which is updated more often, KAI KeyboardAI or Plain?

KAI KeyboardAI ships an update every 3 weeks, and Plain every 4 months. Most recently, KAI KeyboardAI was updated on November 3, 2026 and Plain on November 3, 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.*