★ Bookkeeping that finally makes sense
Run your business.
We'll run the
books.
Tired of fighting clunky, confusing software that treats you like an accountant? Oikos Books handles invoicing, expenses, taxes, and real reports — in plain English, on your own computer.
Try the real app right in your browser — nothing to install, no account. Prefer to own it? Download free for Mac & Windows.
★ The real thing, right here
Don't take our word for it. Use it.
This is the actual Oikos Books app, running live in your browser below — not a video, not a mockup. Pick your kind of business, send an invoice, open a report. Nothing to install, no signup, and nothing you type ever leaves your browser.
What running your books on Oikos Books actually costs you:
Built for the work you actually do
A real look
The whole business, in one calm app
Watch it drive itself, or click any section in the sidebar. This is your actual day.
Everything your business runs on, in plain English
Most owners juggle a clunky accounting program, a spreadsheet, and a shoebox of receipts, then pay someone to untangle it at tax time. Oikos Books is the one place it all lives — in words you already use — doing the real accounting correctly behind the scenes, so you never have to think like a bookkeeper.
No jargon
We translated the accounting into English
Other tools make you learn their language before you can use them. We did the opposite — the accountant's terms still run underneath, perfectly correct, but you only ever see plain words.
Try it yourself
Send an invoice. Watch your books balance.
This is the whole idea: you do the simple thing — bill a customer — and the correct, double-entry accounting happens automatically. You never touch a debit or a credit. Give it a go.
★ Included in Cloud
Just ask. Oikos AI knows your books.
No reports to dig through, no jargon to learn. Ask a plain question and get a straight answer, with the numbers pulled live from your own ledger.
- "How much did I make last month?"
- "Who still owes me money?"
- "What did I spend on fuel this quarter?"
One app. The whole business.
No add-ons to buy, no modules to unlock — it's all in the box.
Invoices & estimates
Quote, invoice, get paid. Recurring invoices, credit memos, and printable customer statements come standard.
Expenses & bills
Log what you spent or enter a bill to pay later. Recurring bills and vendor credits handled without a thought.
Reports in English
Profit & loss, balance sheet, cash flow — "money in, money out, what's left." Print or export any of them.
Sales tax & 1099s
Charge tax, track what you owe the state, and see which contractors need a 1099 at year end.
Inventory
Track what you stock. Selling an item updates your quantity, cost, and profit automatically.
Time tracking
Log billable hours as you work, then turn them into an invoice in one click.
Job & project costing
Tag income and costs to a job and see, plainly, whether it actually made money.
Budgets
Set a yearly target for any category and watch how you're tracking, live.
Switch in minutes
Coming from another tool? Import your customers, vendors, categories, and opening balances and pick up where you left off.
Accountant pack
One click bundles your P&L, balance sheet, trial balance, and full ledger — everything a bookkeeper needs at tax time.
Your data, exportable
One click backs up or exports everything. It's a file on your computer — and it's yours, forever.
Updates itself, free
New features arrive quietly in the background. No "upgrade to the new edition," no surprise bill.
Why owners switch to Oikos Books
Own it, don't rent it
A one-time app you keep — not a subscription that holds your own books hostage every month.
No accounting degree
Plain language everywhere, with a "what's this for?" on anything that could trip you up. Built for the expert in your trade, not in finance.
Correct, invisibly
Real double-entry accounting runs under the hood, so your books always balance — without you ever seeing a debit or a credit.
Works offline
It lives on your computer. No account, no internet, no outage can ever lock you out of your own numbers.
Bring it in, take it out
Import to start, export everything anytime. No lock-in, ever.
Updates itself, free
New features show up automatically. The version you bought keeps getting better.
Download Oikos Books — free
Install it on your Mac or Windows PC and set up your business in about five minutes. No card, no account, no catch.
Free · auto-updates · Mac (Apple Silicon) & Windows 10/11
Simple, honest pricing
Start free. Add the cloud when you want your books everywhere.
The full app, on your own computer. Yours to keep.
- Invoices, expenses, sales tax & real reports
- Complete double-entry books, in plain English
- Works offline · your data stays on your machine
- Free updates, forever
Everything in Free, plus your books in the cloud, on every device.
- Sync across all your devices, automatic backup
- Get paid online & automatic bank feeds (rolling out)
- Invite your accountant or team
- Oikos AI included — ask your books anything, in plain English
Less than a couple hours of a bookkeeper's time, for a tool that does the bookkeeping. No per-feature add-ons, no surprise upgrades.
Built for the people who are great at what they do — and would rather not spend their evenings fighting accounting software.
Questions owners ask
Is this a full replacement for the software I use now?
Yes. Invoicing, expenses, sales tax, real reports, and a complete double-entry ledger are all built in — in plain language, without the learning curve.
Does it do my taxes?
It keeps perfect books and hands you (or your accountant) every report needed to file — profit & loss, balance sheet, the full ledger, even a one-click "accountant pack." Filing the actual return stays with your accountant, the same as it is today.
Is my data really mine?
Completely. Your books are a file on your own computer. Back it up or export everything anytime. Nothing is held on someone else's server.
Mac and Windows?
Both. One free download for each, and the app keeps itself up to date automatically.
Do I need to be online?
No — the free app works fully offline on your own computer. If you'd rather have your books sync across devices, get paid online, invite your accountant, and use the built-in AI assistant, the optional Cloud plan adds all of that.
Can I try it without installing anything?
Yes — try.oikosbooks.com runs the real app right in your browser with a sample business. No download, no signup. When you're ready, download the free app or start the Cloud plan.
Can I switch my existing data over?
Yes. Bring your customers, vendors, categories, and opening balances across, and you're running in minutes.