Month as the unit
Flip between months, not infinite scroll. Each period has a balance, a savings rate, and a story.
Personal finance, uncluttered
See the month clearly, before it slips away.
Lumina is a private ledger for income, spending, and what you actually keep. No accounts. No noise. Just a calm workspace that lives in your browser.
- Private by default
- Saved only on this device
- Built for months
- Not endless transaction dumps
- Ready in seconds
- Add a paycheck and go
Designed to stay out of the way
A ledger that feels like a well-made notebook.
Where it went
Expenses ring a category chart automatically, so rent, groceries, and the rest stay distinct.
Edit without friction
Search, filter, correct a typo, or remove a duplicate. Your history stays tidy.
Yours alone
Nothing is uploaded. Entries stay in local storage on this computer, in this browser.
Workspace
Your ledger
August 2026
Available this month
$0.00
In
$0.00Out
$0.00Kept
0%Add income to see how much of it you keep.
New entry
Where it went
Spent
$0Activity
About Lumina
A small site for a serious habit.
Most budget tools try to be a bank, a coach, and an ad network. Lumina is a website with one job: help you look at a month and tell the truth about it.
- Works offline after the first load
- No signup, email, or tracking pixels
- Clear this site’s storage anytime to reset