CATS Input Method Pro vs ProseKey AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CATS Input Method Pro
Read full descriptionHide full description
Writing Chinese is a breeze if you use the Chinese Alphabet Teaching System. You can also input the same way as you write Chinese. It is the fastest way of inputting Chinese, and even better, by using it, you also learn how to write Chinese characters better. It is the ideal way of implementing the EasyChinese method of learning Chinese. CATS Input Method Pro is a system-wide iOS keyboard: enable it once in Settings → General → Keyboard → Keyboards, then write Chinese by strokes in any app. Version 2.0 is an all-new keyboard, rebuilt with a native iOS look in light and dark mode, with both the learning and standard key layouts, word association, and the professional vocabulary. Your settings carry over from earlier versions.
ProseKey AI
Enhance your mobile writing with an AI-powered keyboard. It offers instant proofreading, effortless rewriting, quick summarization, and text-to-table conversion. Connect your own API keys for personalized AI assistance across all your apps.
- Instant proofreading
- Effortless rewriting
- Quick summarization
- Text-to-table conversion
- Custom AI instructions
- Third-party keyboard integration
Read full descriptionHide full description
Transform your mobile writing experience with ProseKey AI! This powerful iOS keyboard integrates cutting-edge AI directly into your typing workflow, helping you communicate more effectively, wherever you write. Unlock AI Superpowers for Your Text: - Instant Proofreading: Catch grammar mistakes and typos before you hit send. - Effortless Rewriting: Rephrase sentences for clarity, adjust the tone, or change the length with a tap. - Quick Summarization: Condense long articles or messages into key points instantly. - Text-to-Table Conversion: Magically organize information by converting selected text into a structured table. - Custom Instructions: Define your own unique AI prompts and access them directly from the keyboard for personalized assistance. Flexible AI Integration: ProseKey AI seamlessly integrates as a third-party keyboard on your iPhone. Choose your preferred AI engine by connecting your own API keys from leading providers like Gemini, Mistral, and various OpenAI-compatible APIs. This gives you full control over the AI models powering your writing assistance. Get Started: Simply install the keyboard, give it the required permissions, add your API key(s) in the companion app, and start enhancing your writing across all your favorite apps – Mail, Messages, Notes, social media, and more! Please note that an API key is essential for the AI capabilities to function. The app provides instructions on how to acquire this.
Screenshots
Verdict
The clearest difference is update cadence: ProseKey AI at fortnightly against CATS Input Method Pro's every 24 months. On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CATS Input Method Pro ships an update every 24 months, ProseKey AI fortnightly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.
| Parameter | CATS Input Method Pro | ProseKey AI |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 24 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | YIU LEUNG RANDY CHAN | Arya Mirsepasi |
In-app purchases
CATS Input Method Pro
No in-app purchases
ProseKey AI
No in-app purchases
Questions
Is CATS Input Method Pro free?
Is ProseKey AI free?
Do CATS Input Method Pro or ProseKey AI have ads?
Which is updated more often, CATS Input Method Pro or ProseKey AI?
Other comparisons















