# 그린메시지 vs CAMMP

The clearest difference is iOS requirement: 그린메시지 at 9.0 against CAMMP's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

그린메시지 ships an update every 3 months, CAMMP every 5 months. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 그린메시지 | CAMMP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/cammp/id1231630616/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | — | Free |
| Size | 3 MB | 46 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [비즈플레이(주)](https://appshunter.io/developer/1056025365) | [The Council of Alumni Marketing and Membership Professionals](https://appshunter.io/developer/1396661037) |

## What reviewers say

### 그린메시지

[App page](https://appshunter.io/ios/app/id903283980)

**In-app purchases:** none


### CAMMP

[App page](https://appshunter.io/ios/app/cammp/id1231630616)

This app allows conference attendees to personalize their event experience. Users can build custom schedules, explore attendee and sponsor directories, and engage with a live feed. It enhances networking and information access during events.

**Highlights:** Custom conference schedule creation, Attendee directory browsing, Sponsor directory browsing, Live conference feed, Search functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 그린메시지 free?

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

### Is CAMMP free?

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

### Do 그린메시지 or CAMMP have ads?

Neither 그린메시지 nor CAMMP shows ads.

### Which is updated more often, 그린메시지 or CAMMP?

그린메시지 ships an update every 3 months, and CAMMP every 5 months. Most recently, 그린메시지 was updated on October 14, 2026 and CAMMP on October 10, 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.*