SimFin

As a financial data platform with an API, SimFin differs from most in offering a free plan that still covers stock research for investors, analysts and students.

SimFin is a financial data tool that lets you look into company fundamentals, screen stocks and backtest ideas.

Start on the free plan to see whether the data suits your work.

Light research or coursework may never need more.

Paid plans add speed and depth.

START costs $15 a month and BASIC costs $35 a month, both with fast screening and backtesting.

PRO costs $71 a month and includes all features and the complete data history.

Those prices are billed annually, which saves 40 percent against monthly billing.

If you run heavy backtests, the paid tiers are where SimFin gets useful.