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…