The Stack System vs Sunday Swing
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
Sunday Swing
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The Sunday Swing mobile app is the best way to browse and schedule your sessions. View our availability, sign-up for lessons, bay rentals and more right from your mobile phone. Download the app today and start taking your golf game to the next level!
Screenshots
Verdict
The clearest difference is in-app purchases: Sunday Swing at none against The Stack System's 8. Sunday Swing also leads on device support (3 vs 1) and iOS requirement (14.0 vs 16.2). The Stack System's advantage is ads (none vs shown) and chart position (#157 vs unranked). On price and update cadence 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. Sunday Swing asks for nothing beyond the download.
The Stack System ships an update monthly, Sunday Swing every 3 weeks. The most recent releases landed on September 24, 2026 and September 13, 2026 respectively.
| Parameter | The Stack System | Sunday Swing |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (7K ratings) — better | — |
| Positive reviews | 87.0% of reviews | — |
| Number of ratings | 7K — better | — |
| Update frequency | Monthly | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Best chart rank | #157 — better | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.2 | 14.0 — better |
| Further details — not scored | ||
| Size | 213 MB | 117 MB |
| Age rating | 4+ | 4+ |
| Developer | The Stack System, LP | Sunday Swing, LLC |
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
Sunday Swing
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
Sunday Swing
No in-app purchases
Questions
Is The Stack System free?
Is Sunday Swing free?
Do The Stack System or Sunday Swing have ads?
Which is updated more often, The Stack System or Sunday Swing?
Other comparisons
