# 致臻研習社 vs Popular Group

The clearest difference is update cadence: Popular Group at monthly against 致臻研習社's every 9 months. Popular Group also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

致臻研習社 ships an update every 9 months, Popular Group monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | 致臻研習社 | Popular Group |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Size | 74 MB | 12 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ACME Learning Centre Limited](https://appshunter.io/developer/1484036003) | [Dreamware Limited](https://appshunter.io/developer/892413586) |

## What reviewers say

### 致臻研習社

[App page](https://appshunter.io/ios/app/id1484036004)

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

**In-app purchases:** none


### Popular Group

[App page](https://appshunter.io/ios/app/popular-group/id6535680459)

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

**In-app purchases:** none


## Frequently asked questions

### Is 致臻研習社 free?

致臻研習社 is free to download, with no in-app purchases.

### Is Popular Group free?

Popular Group is free to download, with no in-app purchases.

### Do 致臻研習社 or Popular Group have ads?

Neither 致臻研習社 nor Popular Group shows ads.

### Which is updated more often, 致臻研習社 or Popular Group?

致臻研習社 ships an update every 9 months, and Popular Group monthly. Most recently, 致臻研習社 was updated on October 24, 2026 and Popular Group on October 24, 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.*