Invoice Ninja vs Stampli
Updated June 2026 · A structured head-to-head comparison.
Open-source invoicing and payments.
The verdict
Both Invoice Ninja and Stampli are credible invoicing billing tools, and the right pick comes down to your priorities.
Choose Invoice Ninja if you want a lower starting price (free – $10/mo), a free plan to start on and broader platform coverage. Open-source invoicing and payments.
Stampli — AI-powered accounts payable automation.
Invoice Ninja vs Stampli: side by side
| Dimension | Invoice Ninja | Stampli |
|---|---|---|
| Starting price | Free – $10/moWinner | Custom |
| Free plan | YesWinner | No |
| Pricing model | Freemium | Subscription |
| Best for | Freelancers, Developers | Mid Market, Finance Teams |
| Platforms | Web, Self Hosted, Ios, AndroidWinner | Web, Api |
| Rating | 4.6/5 | 4.7/5 |
Invoice Ninja key facts
- Vendor
- Invoice Ninja
- Pricing
- Freemium — Free – $10/mo
- Free tier
- Yes
- Platforms
- Web, Self Hosted, Ios, Android
- Best for
- Freelancers, Developers
- Editor rating
- 4.6 / 5
- Founded
- 2014
- Headquarters
- Israel
Stampli key facts
- Vendor
- Stampli
- Pricing
- Subscription — Custom
- Free tier
- No
- Platforms
- Web, Api
- Best for
- Mid Market, Finance Teams
- Editor rating
- 4.7 / 5
- Founded
- 2015
- Headquarters
- Mountain View, CA, USA
Frequently asked questions
Is Invoice Ninja better than Stampli?
Neither is universally better — Stampli edges ahead on overall rating, but the best choice depends on price, platforms, and your use case. See the side-by-side table above.
Is Invoice Ninja or Stampli cheaper?
Invoice Ninja is the more affordable of the two to get started, at free – $10/mo. Invoice Ninja starts at free – $10/mo; Stampli starts at custom.
Can Invoice Ninja replace Stampli?
Yes for most teams — both are invoicing billing tools with heavily overlapping features. The main trade-offs are pricing and platform support, covered in the comparison above.