PlentyBook is a checkbook register, and nothing more than that.

Type an amount. Tap Income or Expense. Done — the keypad is always on screen, so adding a line takes about two seconds and never opens a single pop-up.

MULTIPLE ACCOUNTS
Keep a register for checking, for savings, for the cash in your pocket. Give each one a colour so you always know which book you're in at a glance. Every account is completely separate — no shared budget, no combined pot, no cross-talk.

A RUNNING BALANCE ON EVERY LINE
See what the balance was after each entry, the way a paper register works. Newest entries sit at the top, where you actually look.

SIMPLE BY DEFAULT
Out of the box there are three ideas: a starting balance, money in, and money out. Notes are optional. Categories, day grouping, and marking entries as cleared all exist — but every one of them is switched off until you decide you want it.

LIGHT, OR NOT
Light by default, because most checkbook apps are relentlessly dark. Flip it to Inverted if you prefer, or let it follow your system.

FIND ANYTHING
Search notes, amounts, or categories. Results show how many matched and what they add up to, so "how much have I spent on coffee" is one search away.

QUICK AUDIT
Money in, money out, and the net for this month, last month, the last 30 days, this year, or any range you pick.

LOCK IT
Require your fingerprint, face, or PIN to open the app — or to open just one account. Off by default, and free.

YOUR DATA IS YOURS
No account. No sign-up. No email address. No analytics, no trackers, no ads. Your register is stored on your device and nowhere else — PlentyBook has no server to send it to.

Export a backup to a plain, readable file whenever you like. That's free, always, whether you buy anything or not. The same file restores on iPhone, so switching phones doesn't mean starting over.

FREE, WITH ONE OPTIONAL PURCHASE
PlentyBook is free with one account. A single $4.99 purchase unlocks unlimited accounts — one payment, no subscription, ever.

Built by ASHA Technology LLC.