Wave's free plan is generous, but the ceiling is low: no API, no AI, no Stripe integration, and higher payment fees. InvoiceCave Pro at $4/month unlocks the modern stack Wave never built.
Wave Apps built its reputation on a free forever plan — and for basic invoicing, it still holds up. But Wave has stagnated on automation, discontinued its public API, and locks you into Wave Payments (with higher per-transaction fees than Stripe). InvoiceCave offers a free plan too, then adds AI assistance, MCP integration for LLM tools, a proper REST API, and your choice of payment processor — all for $4/month.
| Feature | InvoiceCave | Wave |
|---|---|---|
| Starting price | $0 (Free plan) | $0 (Starter) |
| Pro plan price | $4/mo | $16/mo (Pro) |
| Unlimited invoices (free tier) | ||
| Stripe integration | ||
| Custom payment processor | ||
| AI invoicing assistant | ||
| MCP / LLM integration | ||
| REST API | ||
| Recurring invoices | ||
| Estimates & quotes | ||
| Multi-currency | ||
| Client portal | ||
| Receipt storage (Google Drive) | ||
| Sales tax calculator (free tool) | ||
| Profit margin calculator | ||
| Bookkeeping / double-entry | ||
| Payroll add-on | ||
| Payment transaction fees | Stripe standard (2.9% + 30¢) | Wave Payments 2.9% + 60¢ |
| Customer support | Email + docs | Email (paid plan) |
Pick InvoiceCave if…
You want modern tooling — AI, MCP, API, Stripe — and you'd trade Wave's unlimited-free-invoices for real automation and lower payment fees at $4/month.
Pick Wave if…
You need truly unlimited free invoicing with no usage caps, you're in the US/Canada and need Wave Payroll, or you prefer an all-in-one with bookkeeping coaching.
If your business genuinely fits inside Wave's feature set, you absolutely can. But most growing businesses hit real limits — no API, no AI, higher payment fees, and recurring invoices locked behind Pro. InvoiceCave Pro is $4/month and includes all of those.
For most US transactions, yes. Stripe is 2.9% + 30¢ per transaction; Wave Payments is 2.9% + 60¢. On a $500 invoice, Stripe costs ~$14.80 and Wave ~$15.10. Small per-transaction, but adds up on volume.
No. If you need US/Canada payroll, Wave Payroll may be a compelling reason to stick with Wave. InvoiceCave focuses on invoicing, payments, and AI — payroll is not on the near-term roadmap.
Yes — export your Wave customers and invoices as CSV, then import to InvoiceCave. Historical records remain viewable in Wave if you need them.
Model Context Protocol lets AI assistants like Claude, Cursor, and Codex talk directly to InvoiceCave. You can say "create an invoice for Acme Corp for 10 hours at $150/hr due net 30" and the AI generates it — no clicks.
Start with the Free plan — no credit card. Import your clients in minutes.
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