Accounting and invoicing software demo: 7 live apps built by AI models
Every app below is a working accounting and invoicing software, built by an AI coding model from the PlanSmith Accounting & Invoicing planner. They all run with sample data. Open one, sign in with the demo account it shows, and try it.
Open one and try it.
LivePenny
The deepest build: true double-entry with multi-entity switching, invoices, expenses, AP bills, bank reconciliation, and P&L / balance-sheet reports. The richest and most buyer-usable of the set: a full finance back office from the planner.
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LiveLedgerly
A bookkeeper-first back office: a vendor-bill approval queue, a bank-reconciliation workspace, AR/AP aging, and role-based access enforced on every action. The cleanest handover profile of the group.
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LiveButter
A plain-first UI for owners with accountant depth underneath: invoices, expenses, bank match, journal / general ledger, and P&L. 34 balanced-ledger features, hardened against an adversarial security audit at every step.
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LiveBeginner-friendly ledger
The core double-entry stack made approachable: chart of accounts, journal entries with reversal, trial balance, balance sheet, and P&L, behind a friendly setup-first flow and warm plain-language copy.
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LiveBookkeeper Finance OS
An ambitious multi-company, multi-currency finance OS: a setup-readiness command center, AR/AP with an approval workflow, bank reconciliation, tax summary, exports, and a full audit trail.
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LiveMintBooks
A lean, invoice-led bookkeeping app: cash accounts, a running ledger, invoices with partial-payment allocation, receipts, P&L, and receivables aging. It is the focused end of the planner's range.
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Same planner, different results.
| Rank | Build | Model | Score | In one line |
|---|---|---|---|---|
| 1 | Penny | Claude Opus 4.8 | — | Best for a deep, buyer-usable accounting build. |
| 2 | Ledgerly | Claude Opus 4.8 | — | The safest, most disciplined build to hand over. |
| 3 | Beginner-friendly ledger | Claude Opus 4.8 | — | Best for a friendly, first-timer accounting app. |
| 4 | Bookkeeper Finance OS | GPT-5.5 | — | Widest ambition; worth a review before handover. |
| 5 | MintBooks | GPT-5.5 | — | Best when a narrow, invoice-led scope is enough. |
| 6 | Butter | Claude Opus 4.8 | — | Stronger than its audit rank suggests. |
| 7 | Meridian | Gemini 3.5 Flash | — | Newest build. It beat the “too shallow” expectation. |
Scores are as found at audit. The full findings for every build, both what it does well and what went wrong, are on the accounting & invoicing build-off board.
What to know before you build.
- Free accounting software: what the free options give you, and how to test one
- Accounting software features list: 9 core, 7 optional
- The 19 questions an accounting planner asks before a line of code is written
- Nonprofit accounting software: fund accounting is the whole difference
- Construction accounting software: why generic books fail a builder, and what to do about it
- Accounting in Excel: how far a spreadsheet goes, and the wall it hits