Why a regular calculator gets in the way
- It shows one number at a time, so you cannot see which costs are already in the total.
- It has no names: 499.2 does not say what it is.
- One wrong key, or one more friend, and you type everything again.
How to split costs in Sumico
- Start with a heading, like
# Lisbon weekend. It becomes the title of the document.
- Give every cost a name:
villa = $1,840, car = $420, food = $236.
- Add the number of people:
friends = 6.
- Write the total and the share:
trip = villa + car + food, then Each: trip / friends.
Each answer appears on the right as you type. Change friends = 6 to friends = 5 and every line below it updates: the share goes from $416 to $499.20.
What the video shows
A trip is split on a calculator: 1,840 + 420 + 236 = 2,496, then divided by 5, which gives 499.2. Then the question comes: was it 5 friends or 6? The calculator keeps no names and no history, so the only way is to start over. In Sumico the same costs are written as named lines, and changing one number, 5 friends to 6, moves the share from $499.20 to $416.
Questions
Can I split costs in different currencies?
Yes. Write each cost in its own currency, for example hotel = €360. A line that mixes currencies is converted to the first one, and exchange rates work offline.
Does Sumico keep the calculation?
Yes. Every document is saved as you type, with no Save button, and stays on your device.
Do I need an account?
No. Sumico has no account, and what you type is not uploaded anywhere.
