HD计算器

A calculator built for keeping accounts. Results don't disappear: every calculation is kept in a daily history, and you can tag any line with a note — the simplest possible expense log. WHY THIS APP Most calculator apps are full of ads or lock the history behind a subscription. This one is completely free: no ads, no in-app purchases, no account, no internet needed. WHAT IT DOES • Running history: every "=" is saved with its expression and result, grouped by Today / Yesterday / date. • Notes: tap any line to label it "lunch", "groceries", "rent" — or edit the expression and recalculate. • Notes-only view: one tap filters the history down to the lines you labelled, so you can see what you spent today at a glance. • Money-friendly display: thousands separators (1,250.50) and numbers that never run off the screen. • Exact arithmetic: 0.1 + 0.2 is 0.3, not 0.30000000000000004. • Percentages the way desk calculators do them: 200 + 10% = 220, 100 − 9% = 91. Handy for GST, service charges and discounts. • Feels real: key click sound and haptic feedback. YOUR DATA STAYS YOURS Everything is stored only on your phone. Nothing is uploaded, synced or analysed. Delete the app and it's gone. WHO IT'S FOR Grocery runs, market stalls, splitting the bill, checking handwritten receipts — anyone who needs a calculator that lets you look back at what you just added up.