Comparison

The Stack System vs SimDin

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read 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

About

SimDin

Features
Read full description

Decide what's for dinner once, and let SimDin handle the rest. SimDin builds a personalized meal plan around how you actually eat, turns it into a single consolidated grocery list, and if you shop at Kroger sends that list straight to your cart. No more staring into the fridge at 6pm. PLAN A WEEK IN SECONDS Tell SimDin your dietary preferences, allergies, cuisines you love, and how much time you have to cook. It generates a plan starting tomorrow, for as many meals as you want. MAKE IT YOURS A generated plan is a starting point, not a verdict. Tap any meal to regenerate just that one, swap it for a recipe you search, or lock it so it survives when you regenerate the rest of the week. ONE SMART GROCERY LIST Every ingredient across every meal is combined into one list, with quantities added up properly and items grouped by aisle. Export it as a PDF, or keep it in the app. SHOP WITHOUT RETYPING Connect a Kroger account and SimDin matches your list to real products at your store, with prices. Approve the matches and send everything to your Kroger cart in one tap. You finish checkout on Kroger. SCAN YOUR PANTRY AND YOUR COOKBOOK Point your camera at a shelf to add what you already have, so SimDin plans around it. Snap a photo of a recipe from a cookbook or a card and SimDin reads it in and saves it. BUILT FOR HOUSEHOLDS On Family, add up to 6 household members with their own dietary profiles, so one plan works for everyone at the table. ALSO INCLUDED - Recipe search and favorites - Nutrition information for every meal, including protein, carbs, fat, and fiber - Recurring meals for the nights that never change - Notifications when your plan and list are ready SUBSCRIPTIONS SimDin offers auto-renewing monthly subscriptions with a 14-day free trial: - SimDin Starter — $3.00/month: up to 4 plans per month, grocery lists, PDF export, recipe search - SimDin Pro — $5.00/month: unlimited plans, Kroger integration, nutrition tracking - SimDin Family — $7.00/month: everything in Pro, up to 6 household members with per-member dietary profiles Payment is charged to your Apple Account at confirmation of purchase. Your subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions in your Apple Account settings after purchase. Any unused portion of a free trial is forfeited when you purchase a subscription. Terms of Use: https://simdin.ai/terms Privacy Policy: https://simdin.ai/privacy

Screenshots

The Stack System4 screens
SimDin3 screens

Verdict

The call

The clearest difference is update cadence: SimDin at daily against The Stack System's monthly. The Stack System's advantage is chart position (#104 vs unranked) and iOS requirement (16.2 vs 26.2). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. The Stack System sells 3 in-app purchases, starting at $99.00 per year and SimDin sells 3 in-app purchases, starting at $3.00 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

The Stack System ships an update monthly, SimDin daily. The most recent releases landed on November 13, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 8 level
The Stack System versus SimDin: the parameters behind the verdict, then further details
ParameterThe Stack SystemSimDin
PriceFreeFree
Rating4.9 (7.1K ratings) — better—
Positive reviews86.3% of reviews—
Number of ratings7.1K — better—
Update frequencyMonthlyDaily — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
Best chart rank#104 — better—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.2 — better26.2
Further details — not scored
Size222 MB8 MB
Age rating4+4+
DeveloperThe Stack System, LPReign Commons 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

SimDin

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

The Stack System

Subscriptions3
  • TheStack Scoring Membership3 Months trial3 variants$99.001 Year
  • TheStack Speed Membership$99.001 Year
  • TheStack Premium Membership1 Year trial$129.001 Year
3 purchases

SimDin

Subscriptions3
  • SimDin Starter$3.001 Month
  • SimDin Pro$5.001 Month
  • SimDin Monthly$7.001 Month

Questions

Is The Stack System free?
The Stack System is free to download, with in-app purchases available.
Is SimDin free?
SimDin is free to download, with in-app purchases available.
Do The Stack System or SimDin have ads?
Neither The Stack System nor SimDin shows ads.
Which is updated more often, The Stack System or SimDin?
The Stack System ships an update monthly, and SimDin daily. Most recently, The Stack System was updated on November 13, 2026 and SimDin on October 31, 2026.

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