★ A bound book for your money ★


A money app you'd actually read.

Biankbook keeps the ledger so you don't have to. Log one thing; McMack catches the rest. Every month becomes a closed chapter and quietly, over a year, you have a book.

Open your first chapterSee how McMack works →
No card · No bank linking · iOS · Android · Web
TodayDec 14 · Chapter 5
McMack says
Morning, Mira. 23-day streak. Dec is shaping up 14% better than Nov.
· 13 rules running   · 4 entries waiting on you   · Chapter 5 in progress
Saved · Dec
$1,520
+$380 vs Nov
Spent · Dec
$3,600
of $4,150 budget
Streak
23 days
Log one thing today.
Net worth
$16,356
+$1,240 this month
In · Out
Last 5 months
IncomeSpend
Recent
Activity
Tartine Bakery
PendingDec 14 · Cardinal
−$16.00
Ferry Plaza Mkt
Needs categoryDec 13 · Cardinal
−$42.00
Aesop
Needs categoryDec 12 · Cardinal
−$38.00
Whole Foods
Dec 11 · Cardinal· rule
−$82.00
You've saved more in December than three of the last five months.
McMack the capybara — idle
Manual, on purpose
No Plaid. No credentials. You type. McMack learns.
13 rules running
Spotify, rent, payroll — all caught automatically.
5 months at a glance
Bar chart of in and out, side by side, every month.
Closed chapters
Each month is sealed and shelved. You level up.
01The rules engine


Teach McMack once. He catches forever.

You log Whole Foods on a Saturday. McMack 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. McMack remembers Spotify is monthly. He knows payroll is biweekly. He notices Lyft is sporadic and waits for you.

14
rules in the demo
92
caught this month
0
passwords stored
McMack's rules13 running · 92 caught
Match
Category
Cadence
Caught
On
Acme Payroll
Income
biweekly
8×
Spotify
Subscriptions
monthly
4×
Netflix
Subscriptions
monthly
4×
Whole Foods
Groceries
weekly
22×
Trader Joe's
Groceries
weekly
14×
Apt 4B Rent
Rent
monthly
5×
02Money you can see

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.

In · OutIncomeSpend
Last 5 months
Aug · saved $640Sep · saved $980Oct · saved $1,140Nov · saved $1,140Dec · $1,520 (so far)
Where Dec wentTop categories
Rent$1,850
Groceries$484
Subscriptions$247
Health$215
Utilities$162
Transport$156
03Categories & budgets
McMack needs you4 entries
4 entries need a category. Teach me once.
Aesop
Dec 12 · Cardinal Credit
−$38.00
McMack's guess
Shopping
Health
Fun
Save onceTeach McMack
December budgets9 pockets · $4,150
Groceries$484 / $500
Rent$1850 / $1850
Transport$156 / $200
Dining$320 / $400
Subscriptions$247 / $300


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.

04Goals & forecast


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 — McMack does the on-track math and tells you in plain words.

McMack's forecast
“Emergency fund hits $10,000 by April. Japan trip lands by August. Lens lands a month after that. All three on track at current pace.”
Goals3 goals · all on track
Emergency fund
+$800/mo · ready in 4 mo
$6,840
of $10,000
Japan, autumn 2026
+$340/mo · ready in 8 mo
$1,820
of $4,500
New camera lens
+$100/mo · ready in 9 mo
$320
of $1,200
05Multi-account, one book


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 — McMack knows the difference between spending and moving.

All accountsNet worth · $16,356
che
Everyday Checking
••4182
$4,218
sav
Rainy-Day Savings
••9921
$12,860
cre
Cardinal Credit
••0044 · limit $5,000
−$842
cas
Cash on Hand
manual
$120
Chapter 517 days left
December
Saving more than Nov
$1,520
saved · so far
At this pace you'll close December at $2,100 saved — your best in 5 months.
06The bound book

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.

2025
AUG
Lvl 1
$640
★ CLOSED ★
2025
SEP
Lvl 2
$980
★ CLOSED ★
2025
OCT
Lvl 3
$1,140
★ CLOSED ★
2025
NOV
Lvl 4
$1,140
★ CLOSED ★
2025
DEC
Lvl 5
in progress
· OPEN ·
07Levels

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.

Lvl 1
Apprentice
Your first chapter.
Lvl 2
Note-taker
Two months tracked. The hand steadies.
Lvl 3
Bookkeeper
A quarter held. McMack smiles.
Lvl 4
Quiet Saver
Every month this year saved more than spent.
Lvl 5
Even Hand
Five clean closes in a row.
YOU
Lvl 6
Steward
Half a year. Half a year.
Lvl 7
Steady Hand
The streak is now the habit.
Lvl 8
Quiet Pride
Eight chapters. McMack reads ahead.
Lvl 9
Patient Reader
Nine. The book is getting thick.
Lvl 10
Year Closed
Twelve clean months. A whole book.
McMack the capybara — celebrating

Open the book.

Free forever for one account. No card. No tracking. No ads, ever.

Start your first chapter →