LithosPOS is the first-party point of sale. Its integration is document-level: each POS session’s sales, tenders and returns arrive in OneBooks as invoices, payments and credit notes against the Cash Customer, with tax and discounts, so your receivables, tax reports and ledger show the same detail as the POS.

Connect
Section titled “Connect”- From inside LithosPOS, start the connection to OneBooks.
- LithosPOS sends you to OneBooks: sign in if needed, pick the business and select Approve. If LithosPOS shows a code instead, go to app.getonebooks.com/device, enter the code, select Continue and then Approve.
- Back in LithosPOS, map the POS tenders (cash, card, wallet…) to the OneBooks cash and bank accounts, and the POS taxes to your tax rates.
Once you approve, LithosPOS completes the connection. It then appears on Apps → Integrations under the Installed and Connected apps filters, where you can revoke it.
What is posted
Section titled “What is posted”- Sales — an invoice per sale (or per session summary, depending on the sync mode chosen in LithosPOS), sent immediately.
- Tenders — a payment per tender against that invoice, into the mapped cash or bank account.
- Returns and refunds — a confirmed credit note and, when money was handed back, a refund.
- Voids — voided POS sales void the corresponding invoice (only if unpaid).
Each POS sale carries a reference, so a replayed session is never posted twice.
Your LithosPOS benefit
Section titled “Your LithosPOS benefit”OneBooks and LithosPOS are separate companies with one shared idea: your books should keep themselves. Connect OneBooks from inside LithosPOS as described above and the OneBooks Standard plan is included with your LithosPOS subscription, at no charge.
The benefit comes with that connection, not with a coupon: there is nothing to claim and no code to enter. It starts as soon as LithosPOS completes the connection after you approve access, and an hourly check applies it if that moment is missed. Installing the LithosPOS app from Apps → Marketplace, or opening it inside OneBooks, does not start the benefit on its own, and developer sandbox businesses never receive it.
The benefit runs in 30-day periods and lasts as long as LithosPOS keeps the connection active. The plan a partner program grants is set per program — for LithosPOS it is Standard today. While your plan comes from the benefit, the Your plan card in Settings → Billing & Plan reads Included with your LithosPOS subscription.
The benefit ends if you uninstall the app or revoke its access on Apps → Integrations, or if LithosPOS disconnects your account — for example when your LithosPOS subscription ends. Standard then continues until the close of the current 30-day period, never sooner, and the card reads Included with your LithosPOS subscription until and the date. After that, your business moves to the Free plan, or to a paid plan you choose. Connect again from inside LithosPOS at any time and the benefit comes back. If you separately try or buy a higher plan in Settings → Billing & Plan, the higher plan applies; the benefit never downgrades you. See Billing and plans.