Database Design Software You Buy Once
Schemity is a one-time purchase with 1 year of updates included. Try every feature free for 2 weeks with no credit card, and if it is not for you, get your money back within 14 days of buying.
License
Own it forever. No subscription.
Secure checkout by LemonSqueezy, by card or PayPal. Schemity never sees your payment details. Prices in USD; any sales tax or VAT is calculated at checkout.
Start the 2-week free trial Other platforms- 14-day refund, no questions asked
- 1 year of updates included
- Use it on up to 3 of your machines
- No credit card for the trial
What the license unlocks
Understand your schema
- Live reverse engineering
- PostgreSQL, MySQL, SQL Server and SQLite, directly or over SSH
- Context Map & Context Views
- Split a large schema by domain, then zoom C4-style from the map of domains down to every table
See the impact of every change
- Change preview
- Only the tables a change touches, drawn with dropped, added and changed columns in red, green and blue
- Impact analysis & schema lint
- Edit the diagram or open a migration file, then see data loss, failing rows and broken views before anything runs
- Refresh & merge
- Re-sync after your ORM migrates, without redrawing the diagram
Work your way
- MCP server
- Your AI agent works from your real schema
- More formats
- Export SQL for another database, plus SVG, Mermaid, DBML, PlantUML, D2, OpenAPI and a data dictionary in Excel, HTML, Markdown or PDF
- Snowflake design
- Import a GET_DDL script, design, and convert SQL to and from Snowflake
- Offline, in Git
- Diagrams saved as JSON files you can commit
Only need a quick sketch in your browser? Schemity Lite is free
What three years costs
A subscription charges for as long as you use it, and the other buy-once license costs more up front. Schemity is paid once and keeps working when you stop paying.
- DbSchema Pro (Personal)Perpetual license; $296 if you also renew updates every year $196
- ChartDB Pro$25/month, up to 40% less billed yearly from $540
- Schemity LicenseOne-time; $187 if you also renew updates every year $129
Single-user plans at their cheapest published billing, from each vendor's own pricing page, checked September 30, 2026.
Already own a license? Your license never expires. After the first year, updates are an optional $29/year renewal.
Compare plans
| Free trial | After trial | License | |
|---|---|---|---|
| Design visuallyEntity templates, SQL from any entity, import SQL, export PNG / JPEG / JSON | |||
| More formatsSQL converted between PostgreSQL, MySQL, SQL Server, SQLite and Snowflake; export SVG / Mermaid / DBML / PlantUML / D2 / OpenAPI JSON; data dictionary in Excel / HTML / Markdown / PDF | — | ||
| Snowflake designImport a GET_DDL script, export Snowflake SQL, convert to and from other databases | — | ||
| Understand your schemaReverse engineering, SSH tunneling, Context Map, Context Views, minimap | — | ||
| See the impact of every changeImpact analysis, change preview, schema lint, migration generation | — | ||
| MCP server for AI agentsYour AI agent works from your real schema, and nothing reaches the database until you approve it | — | ||
| Multiple workspacesKeep each project's diagrams in its own folder, even inside its Git repo, and move diagrams between them | — | ||
| Works fully offlineDiagrams saved as Git-native JSON files | |||
| Duration | 2 weeks | No time limit | Forever |
| Updates | Included | Keep coming (since v2.13.0) | 1 year included |
| Credit card required | No | No | At purchase |
After the trial, offline design keeps working and your workspace JSON stays on your disk - nothing is deleted or locked away. What pauses is the live-database half and the Context Views built on top of it, until a license unlocks them again. Existing workspaces stay fully usable - only creating a new workspace is gated. Since v2.13.0 an expired trial also keeps receiving updates: what stays unlocked is basic diagramming, which seldom changes, so there is no reason to freeze it on an old version.