The Stack System vs RobertsPT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
The Stack System
Enhance your golf game with science-based training modules for speed, wedging, and putting. Improve distance, accuracy, and consistency with personalized practice sessions and detailed analytics. Requires compatible hardware.
- Variable inertia speed training for distance
- Science-based wedge distance control
- Gamified putting practice and analytics
- Personalized practice sessions
- Real-time scoring and insights
- Customizable training modes
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The award-winning golf training app trusted by more than 75,000 golfers — built to help you hit longer drives, wedge it closer, make more putts, and understand your game like never before. STACK SPEED TRAINING Creates personalized training programs designed to help you swing faster and drive the ball farther. TheStack hardware is required. STACK STATS (NEW) Tracks your on-course performance and shows where you can improve. Identify strengths and weaknesses with advanced insights across every club, distance, lie, and more. STACK WEDGING Sharpens your distance control from 140 yards and in with gamified combines and real-time feedback powered by Stack Radar. PRACTICE TRACKER Elevates range sessions with structured full-swing practice and shot tracking for every club in your bag using Stack Radar. STACK PUTTING Combines intentional practice with data-driven analytics so you can test equipment, identify tendencies, and make more putts. LEARNING LIBRARY Access 60+ instructional videos from PGA Tour coach Dr. Sasho MacKenzie covering the key concepts, feels, and drills behind efficient swings and faster speeds. MEMBERSHIPS TheStack Premium Membership — $129/year Includes Stack Speed Training, Stack Stats, Stack Wedging, Practice Tracker, Stack Putting, and the Learning Library TheStack Speed Membership — $99/year Includes Stack Speed Training, Stack Wedging, Practice Tracker, Stack Putting, and the Learning Library TheStack Scoring Membership — $99/year Includes Stack Stats, Stack Wedging, Practice Tracker, Stack Putting, and the Learning Library Payment is charged to your Apple account after purchase. Subscriptions auto-renew unless canceled at least 24 hours before renewal. Any unused portion of a free trial is forfeited upon purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
RobertsPT
This app provides personalized workout programs and tracks your progress, nutrition, and lifestyle habits with the guidance of a coach. It offers exercise videos, habit tracking, goal setting, and community support to help you achieve your fitness objectives.
- Personalized workout programs
- Workout and exercise video tracking
- Nutrition and habit tracking
- Goal setting and progress monitoring
- Real-time coach messaging
- Digital community support
- Wearable device integration
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With the RobertsPT App, you will have access to workout programs designed specifically to help you reach your fitness and health goals! You can follow & track your workouts, your nutrition, your lifestyle habits, measurements and results–all with the help of your coach. FEATURES: - Access training plans and track workouts - Follow along to exercise and workout videos - Track your meals and make better food choices - Stay on top of your daily habits - Set health and fitness goals and track progress towards your goals - Gain milestone badges for achieving new personal bests and maintaining habit streaks - Message your coach in real-time - Be part of digital communities to meet people with similar health goals and stay motivated - Track body measurements and take progress photos - Get push notification reminders for scheduled workouts and activities - Connect your Apple Watch to track workouts, steps, habits, and more right from your wrist - Connect to other wearable devices and apps like the Apple Health App, Garmin, Fitbit, MyFitnessPal, and Withings devices to track workouts, sleep, nutrition, and body stats and composition Download the app today!
Screenshots
Verdict
The clearest difference is in-app purchases: RobertsPT at none against The Stack System's 8. RobertsPT also leads on review sentiment (100% vs 86%) and device support (4 vs 1). The Stack System's advantage is ratings volume (7K vs 7) and chart position (#131 vs unranked). On price, rating, 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
Both are free to download. The Stack System sells 6 in-app purchases, starting at $9.99 per 7 days. RobertsPT asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for The Stack System against 5.0 for RobertsPT. That said, the two scores are not equally well evidenced: The Stack System has 7K ratings behind it against 7, so its average is the more settled of the two. Written reviews are what separate them: 86% of The Stack System's written reviews are positive against 100% of RobertsPT's.
The Stack System ships an update monthly, RobertsPT every 2 months. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.
| Parameter | The Stack System | RobertsPT |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (7K ratings) | 5.0 (7 ratings) — better |
| Positive reviews | 86.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 7K — better | 7 |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Best chart rank | #131 — better | — |
| Devices | iPhone | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 16.2 | 15.0 — better |
| Further details — not scored | ||
| Size | 222 MB | 181 MB |
| Age rating | 4+ | 4+ |
| Developer | The Stack System, LP | RobertsPT Solutions, LLC |
Customer experience
The Stack System
RobertsPT
Bugs and requests
The Stack System
Reported bugs
2 issues- Putting app not working properly
- Slope percentage input issue
Requested features
3 requests- Calendar integration
- Music/podcast playback integration
- Apple Watch support
RobertsPT
Not enough reviews yet to summarise bugs or requests.
In-app purchases
The Stack System
- Stack Putting 1 Week$9.997 Days
- Stack Putting 1 Wk$9.997 Days
- TheStack Speed Training3 Days trial$14.997 Days
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- TheStack Scoring Membership3 Months trial3 variants$99.001 Year
- TheStack Speed Membership$99.001 Year
- TheStack Premium Membership1 Year trial$129.001 Year
RobertsPT
No in-app purchases








