Kaldo

All your money, in one place

Most people keep their money in more places than they think: a current account, a savings pot, the cash in a drawer, a card for the trip, the kitty shared with a flatmate. The banking apps each know one of them. A spreadsheet knows all of them until the week you stop updating it.

Kaldo is where they sit together. Every wallet has a balance, every entry moves one, and the total at the top of the screen is the answer to the only question most people open a finance app to ask. It is a studio product end to end: the name, the flame, the iPhone app, the web app at kaldo.money, and the backend they share.

Orange means go

The redesign started from one rule: orange is reserved for the things you can do. The add button, the save button, the active tab, the field you are typing in. Everything else is ink on a quiet grey, so the eye goes to the next action without being told.

Money gets its own two colours, and only those two: green for what came in, red for what went out, the same on a row, a chip, a bar in the chart and the month's delta under the balance. Wallets and categories take their colours from a fixed palette the backend already stored, so the new look shipped without migrating a single row.

One backend, two clients

The iPhone app is Expo and React Native with NativeWind, and it runs on the iOS 26 Liquid Glass tab bar rather than an imitation of it. The web app is Next.js dressed in Cherry. Both talk to the same Convex backend and the same Clerk accounts, so an entry saved on the phone is on the laptop screen before the phone is back in a pocket.

Every function on that backend checks who is asking before it reads a row: your own wallets, or ones shared with you, and only an editor or the owner can write. Balances are kept by the server as entries change, never trusted from a client. And the account, with everything in it, can be deleted from either app.