StrackaLine vs Green Slope
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StrackaLine
This golf app provides detailed green topography maps and accurate putt lines, helping golfers of all levels analyze slopes and plan their shots. It uses advanced scanning technology to offer precise data for every hole, revolutionizing the putting game.
- Detailed green topography maps
- Accurate putt line calculations
- USGA Legal pin sheets
- Digital yardage book & range finder
- Slope percentage analysis
- 3D green animations
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StrackaLine is used by Touring Pros, top college programs (Texas, Alabama, OK State, Ohio, Michigan State), and golfers of all ability. Download now and see samples holes and pin sheets from Pebble, Sawgrass, and Torrey. StrackaLine will provide you a pin sheet that is USGA Legal. The App will provide accurate putt lines for you to see the line of the putt before, during, and after your round. The App is the ideal trainer tool for you to learn and understand the green complexes. STRACKALINE GPS & PUTT USERS ● Access your courses ● Digital Yardage Book & Range Finder ● Make Putt and View Fall Lines for any hole location THOUSANDS OF COURSES AVAILABLE NOW Download App Search for your Course HOW DOES THE APP WORK? Using a top of the line laser from the land surveying industry, this advanced technology scans the surface of each green for millions of data points that are accurate to the millimeter to pick up even the most subtle elevation changes. It displays an interactive topography map for each green we've scanned. You can zoom in and out to see the contours and slope percentages, adjust the grid, view a spinning 3D animation, and even calculate your exact putt line (StrackaLine) by setting the hole location and your ball location. Just like a video game, but the information is real! Available for the iPhone, iPad, and iPod, using raw X, Y, Z data points, the device: ● Will calculate all the one inch contours of the putting green ● Will calculate the slope percentages for the whole putting green ● Will calculate the Fall Lines for each hole location ● Will show you the approach angle to the green ● Will calculate the target of your putt ● Will allow you to zoom in and out to see more or less detail With our state of the art technology, join us in revolutionizing the most important part of the golf, putting. StrackaLine is protected by copyright and U.S. patents 6,296,579 and 6,638,173 www.StrackaLine.com
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.
Screenshots
Verdict
The clearest difference is review sentiment: Green Slope at 100% against StrackaLine's 22%. Green Slope also leads on rating (5.0 vs 2.6) and ads (none vs shown). StrackaLine's advantage is price (Free vs $9.99) and ratings volume (17 vs 3). On in-app purchases and device support 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
StrackaLine is free to download; Green Slope costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Green Slope holds the better App Store score, 5.0 against 2.6. That said, the two scores are not equally well evidenced: StrackaLine has 17 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 22% of StrackaLine's written reviews are positive against 100% of Green Slope's.
StrackaLine ships an update every 5 months, Green Slope every 2 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | StrackaLine | Green Slope |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 2.6 (17 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 22.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 17 — better | 3 |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 96 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Elite Golf Technology LLC | Gordon Thomson |
Customer experience
StrackaLine
Green Slope
In-app purchases
StrackaLine
No in-app purchases
Green Slope
No in-app purchases
Questions
Is StrackaLine free?
Is Green Slope free?
Which has better reviews, StrackaLine or Green Slope?
Do StrackaLine or Green Slope have ads?
Which is updated more often, StrackaLine or Green Slope?
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