Slopegraide vs OnePuttPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Slopegraide
Enhance your golf game with this 3D green reader and visual trainer. It uses physics and geometry to guide your aim and putt speed, eliminating the need for traditional green books. Improve your confidence and break through to better putting performance.
- 3D virtual ball rolling simulator in AR
- Augmented reality slope measurements
- Animated 3D putt and putting stroke models
- Color-coded distance control charts
- Recommended start lines and backstroke length
- Customizable putting tempo
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Read putts like the pros with Slopegraide, your personal training app for green reading and putting! Our app uses a combination of physics and geometry to show you approximately where to aim and how soft or firm to hit your putt! No more greens books or arrows to sort through. Consistently misreading the break and speed of putts is now a thing of the past. Build your confidence in your green reading and putting, take advantage of the great shots you hit on the green, and create breakthroughs in your game! FEATURES • *NEW Course Mode - Sharpen your visualization skills with our new revolutionary, patent pending, virtual ball rolling simulator that displays 3D greens from any course in our database in life-sized form in augmented reality, allowing you to see how balls will break as if you are standing right there on the green! You can set the hole location anywhere on the green, see how many paces the pin is from the edges of the green, roll virtual balls on different green speeds, and experience how they interact with the hole and/or flagstick. • **NEW and IMPROVED Slopegraide AR - Quickly roll virtual balls and capture slope measurements with a single tap and see exactly how your putt will break in augmented reality! • *NEW 3D Putt Model - Displays a 3D animated rolling model of any putt inside 30 feet in augmented reality, giving you a 1st person point-of-view (POV) angle showing you the rolling arc of your putt and distance timelines that help you visualize the rolling speed of putts. • *Roll Maps - Our popular color-coded charts that trains your distance control and feel on the greens quickly. Contains both a Training Mode and Tournament Mode that conforms to the Rules of Golf. • *Putting Stroke Model - Displays an animated visual model of an optimal putting stroke for any putt inside 100 feet, complementing reads of your putts with speed control at the press of a button. • *Life-Sized Putting Stroke Model (iPads only) - Our putting stroke model with the golf ball and putter enlarged to their life size, so you can follow the putter being animated on the screen, giving you an accelerated path to hitting putts at optimal speed! • *Classic Mode - Displays recommended start lines based on conservative or aggressive putting styles. This feature accommodates players that prefer to hit putts at dead weight and players that like to aggressively run putts past the hole. • Four Display Modes to accommodate any green reading style: - Slope Percentage - *Recommended start Lines displayed in inches or feet (Imperial) - *Recommended start Lines displayed in centimeters or meters (Metric) - Slope Degrees • *Displays Backstroke Length that tells you how far back to take your putter to create optimal speed of your putts every single time • *Customizable Putt Tempo - Find the putting stroke pace (46 bpm to 85 bpm) that works best for you! • *Our Slopegraide smart ball marker can be used with your Apple Watch without having your iPhone nearby! • *Uphill / Downhill support up to 1 foot each way • *Supports green speeds between 6 and 15 on the Stimpmeter (incremented by 0.5) • Trains the four most important elements; green reading, start line, speed control, and visualization; improving your putting in just a few minutes! *An annual Slopegraide Premium in-app subscription are required for full functionality of this app. Please go to http://www.slopegraide.com to purchase your ball marker. ** Slopegraide AR requires an annual Slopegraide Premium in-app subscription and requires LiDAR that is supported by only the following devices: iPhone 12 Pro, iPhone 12 Pro Max, iPhone 13 Pro, iPhone 13 Pro Max, iPhone 14 Pro, iPhone 14 Pro Max, iPhone 15 Pro, iPhone 15 Pro Max, iPad Pro devices from 2020 and later.
OnePuttPro
This app analyzes your putting stroke using a connected device, providing real-time feedback on key metrics. It offers tailored tips and progress tracking to help golfers improve consistency and lower their scores.
- Real-time putting stroke feedback
- Detailed metric analysis (Loft, Tempo, Face Angle, etc.)
- Personalized tips and guidance
- Progress tracking over time
- Web-based dashboard for in-depth analysis
- Indoor and outdoor practice versatility
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The OnePuttPro system is designed to help golfers of all levels improve consistency and lower scores by analyzing key metrics of their putting stroke. Real-Time Feedback: Simply attach the OnePuttPro device to your putter shaft (just below the grip) and tap the app to connect the bluetooth. Then start putting. It transmits six key metrics instantly. Detailed Metrics: The app displays specific data points for each putt, allowing you to identify exact areas for improvement. Metrics include Loft Angle, Putting Tempo (backstroke vs. forward stroke duration), Face Angle at Impact, Lie Angle, Acceleration at Impact, and Impact off Center Analysis and Guidance: The app doesn't just provide numbers; it offers tailored tips and "Putting 101" guidance for each metric based on your results, helping you understand what adjustments you need to make. Progress Tracking: You can review past practice sessions and track your progress over time, as the data syncs to a web-based dashboard for more in-depth analysis. Versatile Practice: The system can be used on or off the course, in real-world conditions or indoors Download the app and pair it with the OnePuttPro Smart Putting Device to unlock powerful features: track every stroke, analyze your technique instantly, and monitor progress over time. Refine your skills, build confidence, and start sinking more putts. Get the OnePuttPro Smart Putting Aid Device at https://oneputtpro.com/shop/oneputtpro
Screenshots
Verdict
The clearest difference is rating: OnePuttPro at 5.0 against Slopegraide's 4.2. OnePuttPro also leads on in-app purchases (none vs 5) and ads (none vs shown). Slopegraide's advantage is update cadence (weekly vs monthly) and ratings volume (20 vs 1). On price, device support and iOS requirement 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. Slopegraide sells 5 in-app purchases, starting at $9.99 per month. OnePuttPro asks for nothing beyond the download.
OnePuttPro holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Slopegraide has 20 ratings behind it against 1, so its average is the more settled of the two.
Slopegraide ships an update weekly, OnePuttPro monthly. The most recent releases landed on September 29, 2026 and October 3, 2026 respectively.
| Parameter | Slopegraide | OnePuttPro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (20 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 87.5% of reviews | — |
| Number of ratings | 20 — better | 1 |
| Update frequency | Weekly — better | Monthly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 282 MB | 122 MB |
| Age rating | 4+ | 12+ |
| Developer | Jeffrey David Golf, LLC | OnePuttPro |
Customer experience
Slopegraide
OnePuttPro
In-app purchases
Slopegraide
- Slopegraide Premium (1-Month)$9.991 Month
- Slopegraide Premium (1 Year)7 Days trial$99.991 Year
- Roll Maps (1 Month)$9.99
- Roll Maps (1 Year)$49.99
- Slopegraide Premium (Lifetime)$299.99
OnePuttPro
No in-app purchases









