# Green 19 vs CASTRS

The clearest difference is in-app purchases: Green 19 at none against CASTRS's 1. Green 19 also leads on ads (none vs shown). CASTRS's advantage is update cadence (every 3 days vs every 2 months) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. CASTRS sells 1 in-app purchase, starting at $3.99 per month. Green 19 asks for nothing beyond the download.

Green 19 ships an update every 2 months, CASTRS every 3 days. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Green 19 | CASTRS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (13 ratings)](https://appshunter.io/ios/app/green-19/id960411922/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 54.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 29 MB | 13 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Green19 Solutions inc.](https://appshunter.io/developer/1376832876) | [Gianluca Casullo](https://appshunter.io/developer/1881126045) |

## What reviewers say

### Green 19

[App page](https://appshunter.io/ios/app/green-19/id960411922)

This app enhances golf tournaments by providing real-time scorekeeping, live rankings, and course strategy tools. It features GPS distance to the green, augmented reality radar, and photo sharing among players. Sponsors and spectators can also engage with tournament progress.

**Highlights:** Real-time scorekeeping, Live tournament rankings, Aerial hole view with obstacles, GPS distance to green, Augmented reality radar, Photo sharing, Spectator mode

**In-app purchases:** none


### CASTRS

[App page](https://appshunter.io/ios/app/castrs/id6759843843)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CASTRS Pro | $3.99 | per month |


## Frequently asked questions

### Is Green 19 free?

Green 19 is free to download, with no in-app purchases.

### Is CASTRS free?

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

### Do Green 19 or CASTRS have ads?

CASTRS shows ads; Green 19 does not.

### Which is updated more often, Green 19 or CASTRS?

Green 19 ships an update every 2 months, and CASTRS every 3 days. Most recently, Green 19 was updated on October 13, 2026 and CASTRS on October 9, 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.*