# JJ20 vs Mr.GC

The clearest difference is update cadence: Mr.GC at every 4 days against JJ20's every 10 days. JJ20's advantage is iOS requirement (11.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

JJ20 ships an update every 10 days, Mr.GC every 4 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | JJ20 | Mr.GC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (29 ratings)](https://appshunter.io/ios/app/jj20/id1334508518/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 34.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 4 days** |
| Monetization | Free | — |
| Size | 112 MB | 42 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Shanghai Orota Tech Co., Ltd.](https://appshunter.io/developer/1448096234) | [Mr.GC AI Technology](https://appshunter.io/developer/1895831090) |

## What reviewers say

### JJ20

[App page](https://appshunter.io/ios/app/jj20/id1334508518)

This app integrates news, social networking, concert tracking, and an online store. It aims to foster close interaction and create a supportive community for fans.

**Highlights:** News feed, Social networking, Concert tracking, Online store, Fan community building

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

**In-app purchases:** none


### Mr.GC

[App page](https://appshunter.io/ios/app/mrgc/id6764555452)

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

**In-app purchases:** none


## Frequently asked questions

### Is JJ20 free?

JJ20 is free to download, with no in-app purchases.

### Is Mr.GC free?

Mr.GC is free to download, with no in-app purchases.

### Do JJ20 or Mr.GC have ads?

Neither JJ20 nor Mr.GC shows ads.

### Which is updated more often, JJ20 or Mr.GC?

JJ20 ships an update every 10 days, and Mr.GC every 4 days. Most recently, JJ20 was updated on October 25, 2026 and Mr.GC on October 28, 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.*