We are the MonoTape team. You're facing a wallet full of receipts, sorting them into "groceries this much, household that much" by category. We think this sorting and adding is the most tedious part of keeping a budget. It's a slog because one receipt mixes several categories, and when you add while sorting, the running subtotal disappears. In this article we show how to summarize receipt items by category, cleanly.
Why summarizing receipts is such a chore
One grocery receipt has food, household goods, and snacks all mixed together. To log it in your budget, you have to split it by category and total each one. On a standard calculator, you add up the food items, get a subtotal, and jot it on paper. Then add the household items, and so on. Every time you switch categories the previous subtotal disappears, so you mix up your notes or forget to add something. With several receipts stacked up, it's worse.
The most deflating moment is at the end, when "wait, this total doesn't match." You can't tell where you mistyped, so you add the whole thing up again from scratch. That's the number-one reason people put off summarizing receipts.
Keep each category total, then sum to a grand total
In MonoTape you can name and keep each category's total. Add up Groceries, Household, and Snacks on their own lines, then reference them to get the grand total.
Every category total stays on screen, so you can copy them straight into the matching fields of your budgeting app. "Groceries $12.36, household $7.48" reads at a glance, with no chance of mixing up your notes. Add a grand-total line and you can cross-check it against the receipt's printed total.
Long receipts: SUM() and TOTAL()
If you'd rather write one line per item, close each category with SUM() and it turns the rows above into a subtotal. Finish with TOTAL() and you get the grand total from those subtotals — nothing counted twice.
A typo? Fix just that one spot
Mistype one amount and in MonoTape you just fix that number — the category total and grand total recalculate automatically. No re-adding everything. And when you later realize "that wasn't groceries, it was household," move the item over and both totals update. Another receipt turns up? Just add a line.
The pain of summarizing receipts isn't the arithmetic — it's not being able to hold the subtotals while you sort. Keep each category total, cross-check with a grand total, and fix mistakes in one place. Set it up this way and a stack of receipts stops being scary. Use it as the source you copy into your budgeting app.
MonoTape
A calculator notepad where you label your math and one edit recalculates everything. Category summaries, shopping totals, split bills — whatever you calculate stays on the tape. Free to use.
Learn more about MonoTapeFrequently asked questions
Can it photograph and scan receipts automatically?
MonoTape isn't a photo-scanning (OCR) app. It's a calculation notepad for entering amounts by hand and summarizing them by category. Because of that, it works with any receipt, and you can split categories however you like.
Can I make as many categories as I want?
Add lines and make as many categories as you need — groceries, household, dining out, and so on. Add a grand-total line that references them, and you can cross-check against the receipt's total.
Does it replace a budgeting app?
MonoTape focuses on summarizing and calculating. Leave monthly records and charts to a budgeting app, and let MonoTape handle the step before that — producing the per-category totals you enter.
Is it free?
Yes. Labeled calculations, references, auto-recalculation, and tape-style history — every feature mentioned here is free. It works on both iPhone and Android.