Start free.
Upgrade when you outgrow it.
Free is the real editor — every diagram type and notation, not a crippled demo. You only hit Pro when you need more models, the AI assistant, or exports without a watermark. Every new account starts on a 14-day Pro trial, no card required.
Free
The full modelling app, with sensible caps for personal use.
- The full UML 2.5.1 diagram set — class, sequence, activity, state, and more
- Formality & detail rendering, sketch mode, stereotypes
- Real-time autosave and sync across your devices
- Baselines and version history
- Export to PNG, SVG, PDF, XMI, and code-gen JSON
- Up to 3 models, 10 diagrams and 100 elements each
- 50 MB storage · up to 5 published baselines
- A "Made with EOModeller" watermark on exported images (PNG/SVG/PDF)
- No AI assistant
- No more than 3 models, or larger diagrams/storage
Pro
or $190 / year — 2 months free. Every new account starts with a 14-day trial.
Get your first year for US$99 (normally $190). Apply code 8T5ZTZPK at checkout when you choose yearly.
- Clean exports — no watermark
- The AI assistant
- Up to 100 models — effectively unlimited for individual use
- Up to 1,000 diagrams and 5,000 elements per model
- 5 GB storage · up to 100 published baselines
Teams
Everything in Pro, built for a group working on the same models.
- Shared team workspaces
- Roles and permissions
- SSO and centralized billing
Want this? Tell us what you need and we'll factor it in.
Prices are billed through Stripe and shown before you pay. Free-tier caps are the only hard limits; Pro's are generous fair-use thresholds. Questions? Get in touch.