Quadratic vs Stackby
Quadratic and Stackby are both databases & spreadsheets tools. Quadratic is aimed at developers and small businesses, while Stackby is aimed at small businesses and agencies. Stackby costs less, from $9/mo versus $20/mo for Quadratic. Both have a free plan.
AI spreadsheet with Python, SQL and JavaScript in the cells
Spreadsheet-database with API connectors
| Pricing | Freemium · $20 | Freemium · $9 |
| Starting price | $20/mo | $9/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Built for | Developers, Small businesses, Enterprise | Small businesses, Agencies |
| Platforms | web | web |
| Country | US | IN · 2018 |
| Rating | — | — |
Choose Quadratic if
Analysts, data scientists and technical founders who want spreadsheet speed with Python and SQL power.
- Real Python in a spreadsheet without local setup
- Fast browser rendering even on very large datasets
- Code stays visible and auditable cell by cell
Look elsewhere if: Finance teams wanting classic spreadsheet modelling (Equals) or non-technical teams needing an operational database (Airtable).
Choose Stackby if
Marketers needing data-enriched tables.
- Live marketing data
- Affordable
- Templates
Look elsewhere if: Large-scale databases.
Quadratic vs Stackby pricing
Quadratic
- Free$0Limited AI usage, sharing, files and connections
- Pro$20/user/mo$18 billed annually; $20 in AI credits/mo, unlimited connections
- Business$40/user/mo$36 billed annually; $40 in AI credits/mo, buy extra credits
- EnterpriseCustomSSO, self-hosting option, dedicated support
Stackby
- Free$0Up to 5 editors, 20 stacks, 1,500 rows/stack
- Economy$9/seat/mo$4.20/seat/mo billed annually; 7,000 rows/stack
- Business$18/seat/mo$8.30/seat/mo billed annually; 50,000 rows/stack
- Business Plus$35/seat/mo$12.50/seat/mo billed annually; 100,000 rows/stack
- EnterpriseCustom250,000 rows/stack, SAML SSO
Quadratic · Key features
- Python, SQL and JavaScript code cells next to formulas
- AI that writes formulas, code and charts from plain language
- Direct connections to Postgres, MySQL, Snowflake and BigQuery
- Import of CSV, Excel, Parquet and PDF tables
- Agents for auditing sheets, fixing errors and augmenting data
- MCP server and API for external AI agents
Cons
- Less familiar for Excel users who never write code
- AI usage capped by monthly credit allowances
- Fewer finance-specific templates than Excel or Equals
Stackby · Key features
- API columns for live data
- Views and forms
- Automations
- Templates for marketing
- Collaboration
- API
Cons
- Smaller ecosystem
- Feature depth limited
- Less known
Quadratic vs Stackby: FAQ
Which is cheaper, Quadratic or Stackby?
Stackby starts at $9/mo and Quadratic at $20/mo. Both prices are checked on the vendors' own pricing pages.
Do Quadratic and Stackby have a free plan?
Yes, both Quadratic and Stackby have a free plan; paid plans add more usage and features.