Free to start. Pro when you want more.
Backtests are generous on Free. Pro adds every rule in your screener, the signal email and the special settings.
Free
US$0
Free forever: the stock check, the portfolio screenshot and event studies
- Check your whole portfolio from one screenshot
- 2 screener rules plus your own, with daily signals
- 10 honest backtests a month, US or Hong Kong stocks (you pick one)
Pro
US$29 a month
Similar tools charge US$25–85 a month
Daily routine: any number of rules in your screener, each with daily signals and a paper record.
Building your own: unlimited backtests, every try counted.
Card, Apple Pay or Google Pay. Turn the renewal off any time; Pro stays until the end of the month you paid for.
Paying with Alipay, WeChat Pay or FPS? Pay one month at a time →
Prices in US dollars. Pay in Hong Kong dollars instead
Refunds: once Pro has started, a month or prepaid time isn't refunded. A payment taken by mistake, such as a double charge, is refunded in full: write to support@plainquant.com.
Free and Pro, side by side
| Free | Pro | |
|---|---|---|
| Daily market email | ||
| Market interpretation | ||
| Your stocks' daily moves | ||
| Why each of your stocks moved | ||
| Screener buy and sell signals via email | ||
| Backtests | ||
| Backtests a month | 10 | Unlimited |
| History | 5 years | Since 2016 |
| Change a rule's numbers (average days, stop loss) | ||
| Fundamental filters (P/E, growth) | ||
| Your own stock list | ||
| Screener | ||
| Stock picking rules | 2 | 8 |
| Your own rules | ||
| Daily signals on the site | ||
| Stock check | ||
| Stock check, portfolio screenshot, event studies | ||
| Fundamental Research reports a month | 10 | 100 |
| Markets | ||
| US or Hong Kong | ||
| Both markets at once | ||
Similar = backtesters that keep delisted stocks, prices as of 2026-11
Coming later: Lab, for people building their own strategy. Tell us what you'd use →