# 正字戰隊 vs MERS.HK

The clearest difference is review sentiment: 正字戰隊 at 100% against MERS.HK's 40%. 正字戰隊 also leads on update cadence (every 2 months vs every 5 months). MERS.HK's advantage is in-app purchases (none vs 1) and iOS requirement (10.0 vs 18). On price, ads and device support there is nothing between them.

Both are free to download. 正字戰隊 sells 1 one-off in-app purchase. MERS.HK asks for nothing beyond the download.

正字戰隊 ships an update every 2 months, MERS.HK every 5 months. The most recent releases landed on September 15, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | 正字戰隊 | MERS.HK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/id507376434/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **100.0% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | — | Free |
| Size | 36 MB | 2 MB |
| Requires iOS | 18 | **10.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yan Kin LEUNG](https://appshunter.io/developer/320172517) | [Modern Educational Research Society, LTD](https://appshunter.io/developer/432268704) |

## What reviewers say

### 正字戰隊

[App page](https://appshunter.io/ios/app/id507376434)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 正字戰隊 消除廣告(加送十萬金幣) | $0.99 | one-time |


### MERS.HK

[App page](https://appshunter.io/ios/app/mershk/id555592128)

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.

**Highlights:** 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

**In-app purchases:** none


## Frequently asked questions

### Is 正字戰隊 free?

正字戰隊 is free to download, with in-app purchases available.

### Is MERS.HK free?

MERS.HK is free to download, with no in-app purchases.

### Do 正字戰隊 or MERS.HK have ads?

Neither 正字戰隊 nor MERS.HK shows ads.

### Which is updated more often, 正字戰隊 or MERS.HK?

正字戰隊 ships an update every 2 months, and MERS.HK every 5 months. Most recently, 正字戰隊 was updated on September 15, 2026 and MERS.HK on September 8, 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.*