SumSlate: Tape Calculator

Shopping totals, expense tracking, quotes, quick double-checks. How often do you get halfway through and forget what a number was for? This calculator keeps every entry as its own row. Add labels such as Groceries or Transit so each number still makes sense when you review it later. EVERY STEP STAYS VISIBLE Add, subtract, multiply, and divide while each step is recorded as a row you can scroll back through. FIX ONLY THE ROW THAT IS WRONG Tap a row to change its value or operation. Tap a blank row or long-press an existing entry to insert a calculation in the middle. Every later total is recalculated for you. THREE LISTS Keep shopping, expenses, and work separate by switching among three lists you can name. MEMORY AND UNDO Use M+, M-, and MC to set subtotals aside, and Undo or Redo to step back through changes. MADE TO FIT YOUR HABITS Choose decimal precision, digit grouping, haptic…