Tenkey Tape: Adding Machine

Tenkey Tape is a 10-key adding machine that keeps every calculation on an editable paper tape. Add up a column of figures, then change any line — every total below it recalculates instantly.

THE TAPE
• Every entry stays on screen with its operator, its running total and your own comment
• Tap any line to correct a figure, switch + to −, or label what it was for
• Insert a figure you missed into the middle of a tape; nothing gets retyped
• Headings break a long tape into sections you can read back a month later

BUILT FOR BOOKKEEPING
• Exact decimal arithmetic — no floating-point cent errors
• Two tax rates, with +Tax to add tax and −Tax to extract the net from a gross amount
• Subtotals that keep going and totals that start a fresh calculation
• Memory keys, percentages and a Use Result key to carry a total forward
• Decimal places, rounding (5/4, banker's, up, down) and round-each-step to match a printed tape
• Thousands separator, Indian numbering and line numbers

KEEP IT AND SEND IT
• Save tapes by name, and duplicate one as a template for next month
• iCloud sync across iPhone, iPad and Mac
• Share as text, export PDF or CSV, or print the tape
• Full keypad on iPad, and a hardware numeric keypad works on iPad and Mac

No ads. No subscription. No account. Your tapes stay on your devices.