MERS.HK vs Cats InputPad Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MERS.HK
This app provides students and teachers with an optimized experience for accessing and interacting with e-learning resources. Users can annotate screenshots, seamlessly connect with other educational tools, and enjoy a locked rotation for comfortable viewing.
- Optimized viewing and access to e-learning resources
- Screenshot annotation and sharing
- Seamless integration with other MERS apps
- Automatic rotation lock for comfortable use
- Designed for MERS e-Learning in Schools partners
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MERS.HK MERS.HK is aiming to give students and teachers the best possible user experience designed for optimal use of the e-learning resources developed by Modern Educational Research Society, Ltd (MERS). Features: ‧ Provides students and teachers with the best viewing and accessing results when they use MERS resources. ‧ Allows users to take a screenshot on which they can make notes, draw or write remarks. Screenshots can be uploaded to Camera Roll or Share to other Apps. ‧ e-Learning activities are seamlessly connected to other apps developed by MERS for effective learning. ‧ Rotation is automatically locked, in line with the content and interface design of the materials for best viewing. * Only available for e-Learning in Schools partners of MERS.
Cats InputPad Pro
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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. Version 2.0 is fully modernized for today's iPhones and iPads: full-screen support on every device, a native keyboard look in light and dark mode, and improved stability throughout. Compose your text in the app, then copy it for use anywhere. This is the complete Pro version — no ads, long-press reverse lookup showing the stroke code of any character, and the IICore characters database for input of more than 12,000 Chinese characters.
Screenshots
Verdict
The clearest difference is update cadence: MERS.HK at every 5 months against Cats InputPad Pro's every 22 months. MERS.HK also leads on iOS requirement (10.0 vs 15.0). Cats InputPad Pro's advantage is device support (3 vs 1). On price, ads and in-app purchases 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.
MERS.HK ships an update every 5 months, Cats InputPad Pro every 22 months. The most recent releases landed on September 8, 2026 and August 26, 2026 respectively.
| Parameter | MERS.HK | Cats InputPad Pro |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 40.0% of reviews | — |
| Update frequency | Every 5 months — better | Every 22 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 2 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Modern Educational Research Society, LTD | YIU LEUNG RANDY CHAN |
In-app purchases
MERS.HK
No in-app purchases
Cats InputPad Pro
No in-app purchases









