Jotsum vs dapter

Jotsum is a calculator you write in plain words. Type your math and notes on the left; the answers appear on the right, live, as you type — no equals key, no buttons, no fuss. It’s the everyday calculations you actually do: splitting a bill, converting currencies at today’s rate, working out a percentage off, adding up a trip budget, or checking how many days until a deadline. Name your values and reuse them down the page, and Jotsum keeps the whole sheet in sync. SYNCS WITH YOUR MAC Your calculations sync over iCloud, so the sheet you start on your Mac is on your iPhone — and the other way around. No account, no sign-in; it uses your own iCloud. WHAT IT DOES • Plain-language math with variables — name a number, reuse it anywhere • Live currency conversion (160+ currencies + Bitcoin/Ethereum, no API key, no login) • Units — length, mass, time, volume, data, temperature, area, speed • Percentages done the human way — “20% off 80”, “12 is what % of 60” • Dates & durations — “3 days + 5 hours”, “days until christmas”, time zones • Scientific functions — sqrt, sin/cos/tan, logs, exp, powers, plus pi, e, tau • Finance — compound interest and mortgage payments • Multiple notes, organised in a tidy list PRIVATE BY DESIGN Everything stays on your devices and your own iCloud. No account, no analytics, no tracking. Currency rates are the only network request, and the app works offline too. Light and dark, with a warm editorial look that’s easy on the eyes all day. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Apple Notes, if it could do math. Type rate = 45 on one line and rate × hours on the next, and the answer appears in the margin as you type. Every line that looks like a calculation resolves instantly. Everything else stays prose. No account. No servers of ours. Nothing to sign up for. WRITE MATH LIKE A SENTENCE • 20% of 300, 200 - 10% — percentages, markups and discounts the way you'd say them • 100 usd in eur, $50 + 20% — live currency rates, formatted as money • 10 km + 5 m in miles, 6 m / 2 s → 3 m/s — real unit algebra, not string replacement • today + 21 days, 3 days + 12 hours — dates and durations that count themselves A NOTE THAT ADDS ITSELF UP • Name a value and reuse it: rate = 45, then rate × hours three lines later • sum a block for budgets, receipts, invoices and quick tallies • round, sqrt, pi and the rest, for when a note needs to be a little smarter STILL A REAL NOTES APP Folders, pinned notes, search, a home-screen widget, Recently Deleted, and a quick scratch pad one tap from anywhere. Light and dark themes. Available in English, Russian and Kazakh — and the calculator understands all three, because the parser does, not just the interface. PRIVATE BECAUSE OF HOW IT'S BUILT Every calculation runs on your device. Your notes live in local storage on your iPhone, not in an account with us. All the math, unit conversion and currency work is free, forever — there is no calculation behind the paywall. BUILT FOR Freelance quotes and invoices. Monthly budgets. Travel money. Recipe scaling. Any moment you'd reach for a calculator and then forget what the numbers were for. DÄPTER PLUS Unlimited notebooks, and iCloud sync across your iPhones through your own Apple account. Monthly, yearly, or a one-time lifetime unlock — pay once and you're done. Plus is what keeps däpter independent: no ads, no investors, no data sold. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/