Atom Calculator vs CalcMate

The atom calculator is a tool for calculating the atomic number and the mass number based on numbers of atom components - protons, neutrons, and electrons (or vice versa). In addition, you can define the charge of ions with known numbers of protons and electrons.

Stop switching between Notes and Calculator. Type “1000$ + 20% fee” and CalcMate shows the answer instantly, right next to your words. CalcMate is a notepad with a built-in calculator. Mix numbers, text, percentages, currencies, dates and units in the same note, and every line is calculated live as you type. Use it for budgets, expenses, invoices, splitting bills, shopping lists, quotes and quick estimates — no spreadsheet needed. TRY THESE EXAMPLES • 100 + 5 tip • 1000$ + 20% fee • 900$ + 20$ delivery + 1.5% • 500 USD in EUR • 10 BTC in USD • Today + 5 days • 1 kg in lb • subtotal — total of all previous lines • line5 — reuse the result from line 5 • rent × 12 — use saved variables from your Variables list • 20 #food, then sum(#food) — total everything with a tag • # this is a comment WHAT YOU CAN DO • Calculate directly inside your notes, line by line • Percentages, taxes, discounts and tips • Live currency and crypto conversion • Unit conversion: weight, length, volume, time and more • Date and duration math • Variables and line references to reuse results • Calculation tags: sum, average and count lines by #tag • Running total shown above the keyboard STAY ORGANIZED • Folders for every project, trip or budget • Highlight text in eight colors • Dividers to start a fresh calculation section • Share notes as PDF • Trash to restore deleted notes • iCloud sync across iPhone and iPad MAKE IT YOURS • Custom number keyboard with quick symbols • Number formatting, precision, font and font size • Alternate app icons FREE TO USE CalcMate is free. You can optionally remove ads or leave a tip to support development. WE’D LOVE YOUR FEEDBACK Questions or ideas? Email us at lazyboardapp+calcmate@gmail.com