# StackMyDeal! — Smart Shopping Optimizer > StackMyDeal! is a free AI-powered shopping tool that finds the true lowest price across 35+ US retailers by stacking credit card cashback, store memberships, and loyalty perks on top of the base price. ## What It Does StackMyDeal! uses a 5-layer AI Decision Brain to calculate your personalized net cost for any product: 1. **Base Price Comparison** — Real-time prices from Amazon, Walmart, Target, Best Buy, Costco, Home Depot, and 30+ other US retailers 2. **Credit Card Cashback** — Factors in your specific card's cashback rate at each store (Chase Freedom, Amex Blue Cash, Citi Custom Cash, Capital One, etc.) 3. **Store Membership Perks** — Applies discounts from Walmart+, Amazon Prime, Costco membership, Target Circle, and more 4. **Cashback App Bonuses** — Includes Rakuten, Ibotta, TopCashback, and similar portal rewards 5. **Shipping & Tax Optimization** — Calculates total landed cost including free shipping thresholds and estimated tax ## Key Features - **Personalized Deal Ranking**: Results are ranked by YOUR true net cost, not just sticker price - **Stack Sense AI Advisor**: AI-powered shopping advice that explains why a deal is good and suggests optimal payment strategies - **Buy Time Prediction**: Tracks price trends and tells you whether to buy now or wait - **Price History Tracking**: See how prices have changed over time across retailers - **Search History & Favorites**: Save and revisit your best finds - **Trophy System**: Gamified savings milestones - **Mobile-First PWA**: Works on any device, installable as an app ## Who It's For - Shoppers who want to maximize credit card rewards - Deal hunters comparing prices across multiple stores - Anyone with store memberships (Costco, Amazon Prime, Walmart+) who wants to know which membership actually saves more on a specific product - Frugal shoppers who want data-driven buying decisions ## Supported Retailers Amazon, Walmart, Target, Best Buy, Costco, Home Depot, Lowe's, Macy's, Nordstrom, Kohl's, Walgreens, CVS, Kroger, Sam's Club, BJ's Wholesale, Wayfair, Overstock, Newegg, B&H Photo, Micro Center, GameStop, Dick's Sporting Goods, REI, Academy Sports, Petco, PetSmart, Sephora, Ulta, Bath & Body Works, Bed Bath & Beyond, IKEA, Staples, Office Depot, and more. ## How to Use 1. Visit https://deal-stack.app 2. Create a free account 3. Add your credit cards and store memberships in Settings 4. Search for any product 5. See your personalized best deal with all rewards stacked ## Technical Details - **URL**: https://deal-stack.app - **Type**: Progressive Web App (PWA) - **Cost**: Free to use - **Platform**: Web (works on desktop and mobile browsers) - **Data**: Real-time pricing, no affiliate bias in ranking ## Deal Guides - [Best AirPods Deals](https://deal-stack.app/deals/best-airpods-deals) - [Best Headphone Deals](https://deal-stack.app/deals/best-headphone-deals) - [Best Apple Deals](https://deal-stack.app/deals/best-apple-deals) - [Best Laptop Deals](https://deal-stack.app/deals/best-laptop-deals) - [Best TV Deals](https://deal-stack.app/deals/best-tv-deals) - [Best Gaming Deals](https://deal-stack.app/deals/best-gaming-deals) - [Best Soundbar Deals](https://deal-stack.app/deals/best-soundbar-deals) - [Best Robot Vacuum Deals](https://deal-stack.app/deals/best-robot-vacuum-deals) - [Best Smart Home Deals](https://deal-stack.app/deals/best-smart-home-deals) - [Best Kitchen Appliance Deals](https://deal-stack.app/deals/best-kitchen-deals) ## Blog & Resources - [How to Stack Credit Card Rewards with Store Sales](https://deal-stack.app/blog/how-to-stack-credit-card-rewards-with-store-sales) - [Best Credit Cards for Online Shopping 2026](https://deal-stack.app/blog/best-credit-cards-for-online-shopping-2026) - [Best Time to Buy Electronics](https://deal-stack.app/blog/best-time-to-buy-electronics) - [Amazon vs Walmart vs Target: Which Is Cheapest?](https://deal-stack.app/blog/amazon-vs-walmart-vs-target-which-is-cheapest) - [Cashback Apps That Actually Work](https://deal-stack.app/blog/cashback-apps-that-actually-work) - [Costco vs Amazon Prime: Which Membership Saves More?](https://deal-stack.app/blog/costco-vs-amazon-prime-which-membership-saves-more) - [How to Save Money on Groceries in 2026](https://deal-stack.app/blog/how-to-save-money-on-groceries-2026) - [Is Walmart Plus Worth It?](https://deal-stack.app/blog/is-walmart-plus-worth-it) - [Target Circle & RedCard: Maximize Your Savings](https://deal-stack.app/blog/target-circle-redcard-maximize-savings) - [Price Matching Policies at Every Store in 2026](https://deal-stack.app/blog/price-matching-policies-every-store-2026) ## Contact - Website: https://deal-stack.app - Support: support@deal-stack.app