Subscription Cost Tracker

Enter each subscription’s price per billing period. All amounts use the selected currency; changing currency changes the display only, with no exchange conversion. Name and category are optional; empty rows are ignored. A named row needs a price (zero is valid). The example contains invented prices and loads only into an empty list. Monthly average: annual price ÷12, quarterly price ÷3, weekly price ×365.2425÷7÷12. Annual average is monthly average ×12. Weekly values use the mean Gregorian year, not actual payment dates or exact spending in a specific calendar year. Categories group exact names after trimming; multiple categories appear below totals. CSV saves the input list with period codes and currency, decimal points and spreadsheet text protection. Editing updates totals immediately. Invalid entries hide totals and CSV until corrected. Expand Categories for the breakdown. Only the input list and selected currency are retained locally across reloads and tool changes; results and the open/closed breakdown are not stored.