A money app you'd
actually read.
Biankbook keeps the ledger so you don't have to. Log one thing; Otto catches the rest. Every month becomes a closed chapter and quietly, over a year, you have a book.
Teach Otto once.
He catches forever.
You log Whole Foods on a Saturday. Otto leans over and asks once: “Want me to catch this every week?” Say yes — and from then on, every Whole Foods entry lands in Groceries on its own.
Rules learn cadence too — weekly, biweekly, monthly, irregular. Otto remembers Spotify is monthly. He knows payroll is biweekly. He notices Lyft is sporadic and waits for you.
Five months, side by side.
The In/Out chart is the heart of Biankbook. Every month shows what came in and what went out — same colors, same bars, no shame, no spin. You'll know what's normal for you in three months.
Twelve pockets.
No yelling.
Groceries, Rent, Transport, Dining, Subscriptions, Utilities, Income, Transfer, Shopping, Health, Fun, Savings. Twelve categories — the ones that match how people actually spend.
Set a monthly target on any of them. When you cross it, the bar turns coral. We don't ping, freeze, or shame you. The number is the number; you decide what to do with it.
Save toward
actual things.
“Three months of essentials.” “Japan, autumn 2026.” “A 35mm prime.” Goals are the named version of saving. You set a target, a deadline, and a monthly add — Otto does the on-track math and tells you in plain words.
Four kinds of money.
One running total.
Checking, savings, credit, and cash on hand. Add as many as you want; Biankbook keeps them straight. Transfers between accounts don't double-count — Otto knows the difference between spending and moving.
Each month becomes a chapter.
On the last day of every month, you close the book together. We seal it, summarize it, and set it on the shelf. Most folks never look back. We keep the bound copy anyway.
Quietly, you get good at this.
Ten levels, each named for a kind of attention. You don't unlock features — you become someone who notices.
Open the book.
Free forever for one account. No card. No tracking. No ads, ever.
Start your first chapter →