Invoice Ninja vs Krystal Bull
A side-by-side comparison of two self-hosted budgeting & finance options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Invoice Ninja
Open-source invoicing and billing platform
VS
Krystal Bull
Become an oracle and create Bitcoin bets
| Feature | Invoice Ninja | Krystal Bull |
|---|---|---|
| Category | Budgeting & Finance | Budgeting & Finance |
| License | Elastic-2.0 | free |
| Language | PHP | Scala |
| Setup difficulty | Medium | Easy |
| Min. RAM | 512 MB | 512 MB |
| Deployment | docker, bare-metal, source | docker, one-click |
| GitHub stars | ★ 9,979 | ★ 42 |
| First released | 2014 | 2022 |
| Replaces | FreshBooks, QuickBooks | — |
Why pick each one
Choose Invoice Ninja if…
- Comprehensive billing features
- Many payment gateway integrations
Choose Krystal Bull if…
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- One-click install on common self-host platforms
- Written in Scala
Frequently asked questions
Is Invoice Ninja or Krystal Bull better?
Neither is universally better. Invoice Ninja has the larger community, while Krystal Bull is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Invoice Ninja and Krystal Bull free and open-source?
Yes. Invoice Ninja is licensed under Elastic-2.0 and Krystal Bull under free. Both can be self-hosted at no software cost.
Can I run Invoice Ninja and Krystal Bull with Docker?
Invoice Ninja: yes. Krystal Bull: yes.