Nerd Fitness Coaching vs The Stack System
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nerd Fitness Coaching
This app connects you with a dedicated coach to create personalized fitness goals, exercises, and habits. It's designed to help you improve your overall life through custom plans.
- Custom coaching program
- Personalized goals
- Tailored exercises
- Habit building
- Life improvement focus
Read full descriptionHide full description
The Nerd Fitness Coaching App is your gateway to our custom coaching program, where you'll work with your paired coach that designs a custom set of goals, exercises, and habits for you to Level Up Your Life!
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
Read full descriptionHide full description
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
Screenshots
Verdict
The clearest difference is review sentiment: The Stack System at 86% against Nerd Fitness Coaching's 23%. The Stack System also leads on rating (4.9 vs 4.0) and ratings volume (7.1K vs 42). Nerd Fitness Coaching's advantage is in-app purchases (none vs 8). On price, update cadence, ads 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
Both are free to download. The Stack System sells 6 in-app purchases, starting at $9.99 per 7 days. Nerd Fitness Coaching asks for nothing beyond the download.
The Stack System holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: The Stack System has 7.1K ratings behind it against 42, so its average is the more settled of the two. Written reviews point the same way: 23% of Nerd Fitness Coaching's written reviews are positive against 86% of The Stack System's.
Nerd Fitness Coaching ships an update fortnightly, The Stack System monthly. The most recent releases landed on October 6, 2026 and October 25, 2026 respectively.
| Parameter | Nerd Fitness Coaching | The Stack System |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (42 ratings) | 4.9 (7.1K ratings) — better |
| Positive reviews | 23.1% of reviews | 86.3% of reviews — better |
| Number of ratings | 42 | 7.1K — better |
| Update frequency | Fortnightly — better | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Best chart rank | — | #79 — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 16.2 |
| Further details — not scored | ||
| Size | 56 MB | 222 MB |
| Age rating | 4+ | 4+ |
| Developer | Nerd Fitness | The Stack System, LP |
Customer experience
Nerd Fitness Coaching
The Stack System
Bugs and requests
Nerd Fitness Coaching
Not enough reviews yet to summarise bugs or 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
In-app purchases
Nerd Fitness Coaching
No 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
Show 3 moreShow fewer
- TheStack Scoring Membership3 Months trial3 variants$99.001 Year
- TheStack Speed Membership$99.001 Year
- TheStack Premium Membership1 Year trial$129.001 Year
Questions
Is Nerd Fitness Coaching free?
Is The Stack System free?
Which has better reviews, Nerd Fitness Coaching or The Stack System?
Do Nerd Fitness Coaching or The Stack System have ads?
Which is updated more often, Nerd Fitness Coaching or The Stack System?
Other comparisons
