Green Slope vs Windy Golf
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Green Slope
This training aid helps golfers visualize and understand putts by measuring green slope and predicting break. It uses device sensors to assess orientation and attitude, then provides graphical overviews and adjustable aimpoint tables.
- Measures green slope
- Predicts putt break and aimpoint
- Adjustable aimpoint tables
- Graphical overviews of putts
- Uses device motion sensors
- Configurable green speed and pin direction
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"Green Slope" measures the slope and then predicts the break and aimpoint required for a putt. It's intended as a training aid, providing assistance with visualization and understanding of putts. Set the green speed, select pin direction, place the device on ground for three seconds, and read your putt. Using the internal iPhone and iPad motion sensors to assess the device orientation and attitude, the App measures slopes across and along the line of the putt. The estimated Fall Line direction and slope are then used to predict the likely break. Standard 'Aimpoint', 'Plays As', 'Fingers' and other tables are available from the menu. These can be adjusted for slopes, Stimp, past hole distance, and other parameters. The app then provides graphical overviews of selected putts with optional configurations. Since many phones have one or more camera lenses on the back preventing accurate slope measurements, Green Slope has been designed to be used with the phone is face down or face up on the green. Comprehensive help on app use is available from the menu button.
Windy Golf
This app provides real-time wind calculations and GPS data to help golfers adjust their shots and lower scores. It features dynamic wind adjustments, a live activity tracker, and score history synchronization. Choose your preferred units and weather sources for a personalized experience.
- Dynamic wind calculations
- Real-time compass
- Lightweight GPS for distance measurement
- Score history synchronization
- Manual wind adjustment
- Live activity tracker
- Imperial/Metric unit options
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A real-time wind caddie in your pocket helps you lower scores and take the mystery out of wind! * Get dynamic wind calculations to calculate accurate yardage adjustments. Save strokes off every round played in windy conditions. * Real time compass calculates wind adjusted distance on the fly. * Free GPS maps available for many golf courses. * Stats dashboard helps spot areas for game improvement. * Keep score for every round and maintain complete score history sync'd to your iCloud account. * Option to manually adjust wind direction and speed. * A live activity tracker on your lock screen provides up to date information and quick access to the app. * Choose between Imperial and Metric units for distances and wind speed. * For advanced users, you can also choose from a variety of weather sources and favorite weather stations near you. * An iOS widget displays wind information from your favorite weather stations. TERMS OF USE: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Windy Golf at Free against Green Slope's $9.99. Green Slope's advantage is in-app purchases (none vs 3). On rating, ratings volume, update cadence and ads 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
Windy Golf is free to download; Green Slope costs $9.99 up front. Windy Golf sells 3 in-app purchases, starting at $0.99 per month. Green Slope asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Green Slope against 5.0 for Windy Golf. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on August 17, 2026 and September 22, 2026 respectively.
| Parameter | Green Slope | Windy Golf |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Gordon Thomson | Hormazd Romer |
Customer experience
Green Slope
Windy Golf
In-app purchases
Green Slope
No in-app purchases
Windy Golf
- Monthly$0.991 Month
- Birdie Annual1 Month trial$6.991 Year
- Lifetime$129.00
Questions
Is Green Slope free?
Is Windy Golf free?
Which has better reviews, Green Slope or Windy Golf?
Do Green Slope or Windy Golf have ads?
Which is updated more often, Green Slope or Windy Golf?
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