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First release: large-key business calculator with on-screen tape, M+ M− MR MC, Grand Total, TAX+ / TAX− and a saved, shareable tape.
Big-key calculator: see every figure, M+ M− MR, GT, tax keys & a saved tape.
Business Calculator is a clean, large-key calculator built for shops, offices and anyone who adds up figures all day. No account, no sign-in, nothing to set up. Open it and calculate. SEE EVERY FIGURE • The whole calculation stays on screen as you type, for example 2 + 2 + 2 + 2 + 2 + 2 − 6 × 4 • The total updates live at the bottom in large, easy-to-read figures • Earlier results scroll above like a paper tape, so you can check your work at a glance • Standard maths rules: × and ÷ before + and − BUSINESS KEYS • M+, M−, MR and MC memory keys • GT (Grand Total) adds up every result — tap to use it, long-press to clear • TAX+ adds tax and TAX− takes it out of a tax-inclusive price, at the rate you choose (e.g. 18% GST) • Business-style percent: 500 + 10% = 550, 500 − 10% = 450, 250 × 8% = 20 • 00 key, +/−, backspace SAVED TAPE • Every finished calculation is saved with the time • Tap any result to reuse it • Copy or share the whole tape as text (to chats, email or notes) • Swipe to delete one entry, or clear the tape MADE FOR DAYLIGHT • High-contrast light theme that stays readable in sunlight • Large keys that are easy to hit • Exact decimal maths: 0.1 + 0.2 is exactly 0.3, no rounding surprises • Choose decimal places (Auto, 0, 2, 3 or 4) and thousands separators SMALL AND PRIVATE • No login and no account • Works fully offline • Needs no permissions • Your calculations stay on your phone