Green 19 vs CASTRS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Green 19
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.
- Real-time scorekeeping
- Live tournament rankings
- Aerial hole view with obstacles
- GPS distance to green
- Augmented reality radar
- Photo sharing
- Spectator mode
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Green 19 app replaces the conventional cardboard scorecard and lets golf tournament participants keep track of the tournament in real time. Each team records its score after each hole and is immediately notified of its ranking in the tournament. An aerial view of the current hole reveals any obstacles so that players can adjust their strategy. In addition, the GPS function indicates the distance between the team and the green, and a radar equipped with augmented reality identifies the green even when it’s hidden by obstacles. Participants can also snap pictures which are automatically shared with the other players. Event sponsors can also benefit from the app by adding their logos which are presented to users at just the right time. The spectator mode lets volunteers use the app, too, whether to check rankings or take photos. Also, organizers have the option of using the Green 19 management platform to send messages to participants. A leaderboard is available in the tournament management system to present the rankings at the end of the day along with any photos taken by participants. Learn more about the app at https://green19.com
CASTRS
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A fishing app built to give anglers a competitive platform to share and compare their catches. Log your catches, get AI verification, and earn points that unlock gear, titles, and bragging rights. Climb local and provincial leaderboards, open gear cases for rods and lures that boost your catches, and show off your best fish on your Angler ID profile. Join fishing clubs, compete in club battles, enter tournaments, and build your friend group - all in one place built for serious anglers. Terms of Use: https://castr-nation.vercel.app/terms
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Green 19 | CASTRS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (13 ratings) — better | — |
| Positive reviews | 54.5% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 29 MB | 13 MB |
| Age rating | 4+ | 12+ |
| Developer | Green19 Solutions inc. | Gianluca Casullo |
In-app purchases
Green 19
No in-app purchases
CASTRS
- CASTRS Pro$3.991 Month









