Split a bill in seconds
Scan the receipt, tick what you had, share the link. Everyone else opens it, types their name and ticks theirs — nothing to install.
Costia FinanceAvailable now
Who paid what, without the calculator.
Costia Finance tracks what you spend, splits what you share and tells you who owes what. And when you cannot face typing, you hand it the receipt.
Open in your browser
Groups for what lasts
A trip, a flatshare, a couple. Split evenly, by amount or item by item, and settle up in one tap. Each group keeps its own currency.
“I lent Dani 20”
What you are owed and what you owe, person by person, with no group to set up — even with people who do not use Costia.
Your own spending, properly
Income and expenses with categories, payment methods and photos. Recurring expenses log themselves. Statistics that make sense.
Inside the app
A shared trip: total spent, what you are owed, and every expense in the group. 
Every expense you have in one place, with your balance on top. 
The assistant answering a question about six months of spending. 
Spending by category in a donut chart. 
A guest opening a shared bill from a link and ticking what they had. 
Your groups, each with what you owe or are owed.
Costia Premium
Premium: the part that types for you
- Receipt scanning that fills in every item
- Invoices forwarded to your own @in.finance.costia.app address
- Split by talking, and save it as a rule
- Search your whole history by meaning
- An assistant that asks before it acts
- Monthly summaries and heads-ups
Bought inside this app, Premium also covers every other Costia app.
See Costia PremiumAt a glance
- iPhone, iPad, Android and the browser
- Works offline, syncs when back
- English and Spanish, light and dark
- Sign in with Google, Apple, email or a passkey
