justa
A household ledger for iPhone

Shared bills,
split fairly.

Rent split by income. Extras logged as they happen. One line at month end that says who pays whom.

Free · iPhone · iOS 17+
No account No server Data not collected
Fair isn’t always half

Try the split.

Justa splits the monthly plan by each person’s usual income. Move the sliders. This is the same math the app runs on your iPhone.

Monthly plan
Inês
Tiago

How a month works

Plan it, log it, settle it.

01 — Plan

Set the month once.

Add each person’s usual income and the costs that repeat: rent, internet, electricity. Justa works out who covers what. Change one month without touching the rest.

Household screen showing Inês at 55% and Tiago at 45% of income, with monthly costs below.
02 — Log

Extras, as they happen.

Groceries, Friday dinner, the pharmacy. Add it in a few taps, or photograph the receipt. The text is read on the iPhone, never uploaded.

New expense sheet with Scan receipt, title, amount, date, category grid and who paid.
03 — Settle

One line at month end.

Justa nets every shared extra against each person’s share. No spreadsheets, no “I think I paid last time”. Just who pays whom, and how much.

Settle screen: Inês pays Tiago €7,91, above the six open extras and each person's balance.
Also inside

The whole household, not just the split.

Accounts screen showing €4 200,00 across household savings pots.

Accounts

Track the household’s savings pots month by month. Personal pots stay out of the total.

Analytics screen with accounts and planned versus realized sections.

Analytics

Planned versus realized, month against month, and who paid versus their share.

Split screen with a bill amount, the people splitting at 55% and 45%, and who paid.

Split

Enter a bill, pick who’s in and who paid, then save it as an expense.

Private by design

Your money talk stays at home.

Justa has no account and no server. There is nothing to sign up for and nothing for us to see.

On your iPhone

The ledger lives on the device. Nothing leaves unless you choose a folder.

Your folder

Optionally share a folder in iCloud Drive, Dropbox or Google Drive so a second iPhone opens the same ledger.

Face ID

Lock the app on this iPhone. The setting never leaves the device.

Several homes

Keep the couple ledger and your parents’ house side by side.

Pricing

Free. One upgrade, once.

Justa

€0
  • Monthly plan split by income
  • Expenses, accounts, analytics and settle-up
  • Several households, Face ID
  • Open a shared folder someone else created

Justa Plus

€7,99one time
  • Create a shared folder for a second iPhone
  • Record estimate invoices against the plan
  • Family Sharing included
  • No subscription
Questions

Good to know.

Why split by income instead of 50/50?

If one person earns 55% of the household, covering 55% of the shared plan leaves both with the same share of what they earn. You can still set any split you like for a single month.

How do two iPhones share a ledger?

Create a vault in an empty folder on iCloud Drive, Dropbox or Google Drive and share that folder. The second iPhone opens the same folder. If both edit the same bill at the same time, the later save wins.

Is the app in English?

Justa follows your iPhone’s language, in English or European Portuguese. Amounts use the currency of the household.

What do you collect?

Nothing. See the privacy policy.