Acute Calculator vs Stack

+ Easy to use visual editor + Supports 30+ functions + Intuitive palette system + Comes with history tape + Store variables for later + No ads or subscriptions Terms of Use: https://acutecalc.app/terms Privacy Policy: https://acutecalc.app/privacy

Stop losing receipts. Stop missing warranties. Stack is the personal purchase tracker that uses AI to scan your receipts, track your warranties, and show you exactly where your money goes — all in one app. SCAN RECEIPTS IN SECONDS Point your camera at any receipt and Stack's AI instantly extracts the store name, items, prices, and date. No manual entry. No tedious data input. Just snap and go. You can also capture receipts from other apps using the built-in Share Extension — forward email confirmations, screenshots, or photos directly into Stack. NEVER MISS A WARRANTY AGAIN Stack tracks every warranty expiration date and sends you notifications before coverage ends. No more digging through drawers for proof of purchase when something breaks. Your receipts and warranty details are always right where you need them. FIND PRODUCT MANUALS & WARRANTY LINKS Lost a product manual? Stack searches the web to find manuals, warranty registration pages, and support links for your purchases. Everything you need for a product, organized in one place. SEE WHERE YOUR MONEY GOES Your monthly spending dashboard breaks down purchases with clear, visual charts. See totals by store, category, or time period. Understand your spending patterns at a glance without connecting bank accounts or sharing financial data. ORGANIZE YOUR WAY Stack features a unique spatial canvas where you can arrange and group your purchases visually — like a digital mood board for everything you own. Drag, group, and organize items however makes sense to you. It is not just a list; it is your personal inventory, laid out your way. PRIVATE & SYNCED Your data stays yours. Stack syncs across all your Apple devices with iCloud — no account creation required, no third-party servers. Your purchase history, receipts, and warranty documents are encrypted and available wherever you are. BUILT FOR REAL LIFE Stack is designed for personal use, not business expense reports. Whether you are tracking a laptop warranty, organizing kitchen appliance receipts, or checking how much you spent on groceries this month, Stack keeps your purchase life simple and organized. KEY FEATURES - AI receipt scanning — camera or Share Extension - Automatic extraction of items, prices, stores, and dates - Warranty expiration tracking with push notifications - Monthly spending dashboard with visual charts - Spatial canvas for visual purchase organization - Online product manual and warranty link finder - iCloud sync across iPhone and iPad - No account required — just download and start scanning Whether you have five receipts or five hundred, Stack keeps everything organized, searchable, and always at your fingertips. Download Stack today and never lose another receipt or miss another warranty. IN-APP PURCHASE OPTIONS Unlock the full Stack experience with our Pro plan. We offer two subscription models: - $7.99 USD per week: For flexible use as you organize and track your purchases. - $129.99 USD per year: Enjoy an annual plan with 69% savings! Free users can store up to 5 items. Pro users get unlimited items, advanced receipt enrichment, and priority sync. Fair usage policies may apply to ensure a high-quality experience for all users. We reserve the right to change pricing, subscription terms, or in-app benefits. Any changes will be communicated via the app or website. For more details on our policies, please visit: Terms of Service: https://hanifsgy.github.io/things-site/terms Privacy Policy: https://hanifsgy.github.io/things-site/privacy