Teller
12 screens · BankingA current account that tells you what is actually left
Twelve screens of an everyday banking app built on the question a balance never answers, which is how much of it is already spoken for by standing orders and bills before the month ends, with every forecast, category total, pot projection and budget remainder on every screen derived from the ledger rather than asserted above it.
The design system and all 12 screens in one prompt. Each screen is also on its own page, free, if you only want one.
Design system
One file, shipped with the set. Every screen declares these values inline so it can be lifted out on its own, and the build refuses a screen that paints a colour this file does not name.
Colours
Scales
The flow
In the order somebody meets them. This is the app's own sequence, not a list of categories.
The account
4What is in it and where it went. A balance that is honest about what is already committed, and a ledger you can actually interrogate.
Moving money
4Paying someone, which is the thing a bank is for, and the three screens between choosing them and the money being gone.
Staying on top
4The parts that decide whether the month works. A budget that knows what is still to come, pots with real dates on them, and the card itself.











