# gcffm Eventapp vs Rocket Calculator

The clearest difference is in-app purchases: gcffm Eventapp at none against Rocket Calculator's 1. gcffm Eventapp also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Rocket Calculator's advantage is update cadence (weekly vs monthly). On price and ads there is nothing between them.

Both are free to download. Rocket Calculator sells 1 one-off in-app purchase. gcffm Eventapp asks for nothing beyond the download.

gcffm Eventapp ships an update monthly, Rocket Calculator weekly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | gcffm Eventapp | Rocket Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/gcffm-eventapp/id1449297839/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free | — |
| Size | 3 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Andre Albach](https://appshunter.io/developer/1259388740) | [毅 王](https://appshunter.io/developer/6774631380) |

## What reviewers say

### gcffm Eventapp

[App page](https://appshunter.io/ios/app/gcffm-eventapp/id1449297839)

Discover geocaching events in Frankfurt, Germany, and worldwide. Easily add events to your calendar, share details, and navigate to locations. Filter events by area or search to find exactly what you're looking for.

**Highlights:** Event list overview, Add own events (GPX/web), Area categories (Home, Map, Global), Add to system calendar, Copy and share event info, Open in geocaching/navigation app, Search and filter events, Map view

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

**In-app purchases:** none


### Rocket Calculator

[App page](https://appshunter.io/ios/app/rocket-calculator-apogeefield/id6778329350)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ApogeeField Unlock | $4.99 | one-time |


## Frequently asked questions

### Is gcffm Eventapp free?

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

### Is Rocket Calculator free?

Rocket Calculator is free to download, with in-app purchases available.

### Do gcffm Eventapp or Rocket Calculator have ads?

Neither gcffm Eventapp nor Rocket Calculator shows ads.

### Which is updated more often, gcffm Eventapp or Rocket Calculator?

gcffm Eventapp ships an update monthly, and Rocket Calculator weekly. Most recently, gcffm Eventapp was updated on November 2, 2026 and Rocket Calculator on October 31, 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.*