Rapid & Quick Calculator vs Eider

Over 300,000 downloads worldwide! A fast, friendly calculator built for everyday use — shopping, splitting bills, household budgeting, and more. FEATURES * History Tape — review your past calculations and reuse any answer with a single tap * Expression Input — type the whole equation, just like you'd write it on paper * Sales Tax — toggle tax-included/excluded with a single button; swipe to switch between multiple tax rates * Percentage Discounts — e.g. 100 - 30% = 70 * Precise Rounding Settings * Multiple Color Themes * Multiple Font Sizes and Typefaces * Arrow Keys — move the cursor left or right to edit any part of the expression * Share — send expressions and answers to other apps * iPad Support — including Slide Over and Split View on supported devices * Sound Effects To reuse or edit an equation from your history, swipe left on it (or touch and hold) to open the menu. We'd love to hear your feedback! This is the free version. A paid version is also available — it removes ads and offers four tax keys (the free version has two).

Eider is the free, easy way to split shared expenses whether on a trip or at home, then settle up simply. Adding an expense is never capped, delayed, or interrupted. No limit on the people or expenses you track. Just a well-made ledger that does the math so nobody has to keep a mental tally. HOW IT WORKS - Start a nest for your trip, your household, or whatever you share. - Add an expense in seconds. Eider remembers your usual split. - See a running balance of who owes whom, simplified down to the fewest payments. - Settle up through the app you already use: Venmo, Cash App, PayPal, Zelle, or Apple Cash. Eider records it, and it never touches your money. BUILT FOR REAL LIFE - Made for trips: throw every flight, cab, cabin, and dinner into one place and walk away square. - Just as good at home: rent, groceries, utilities, and the everyday back-and-forth. - Split any way: evenly, by percentage, or exact amounts. - Set a standing split once and forget it. - Recurring expenses for rent, utilities, subscriptions, and anything else. FREE, AND NOT A TRIAL Everything above is free. No cap on the people or the expenses you track, and adding an expense is never delayed or interrupted. EIDER PLUS (Coming Soon) - Connect a bank account and bring transactions in automatically, then split them with 1 tap. - Scan a receipt and let Eider read the merchant, date, and total off it. - Split one receipt line by line instead of evenly. - A searchable library of every receipt your nest has captured. - Spending patterns, period reports, and a monthly digest of where the money went. Plus is a personal membership rather than a per-nest upgrade. An annual membership also shares receipt scanning and line-item splitting with everyone in the nests you create.