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Reviewed · Updated 2026-06-19

Bubble Screener

Bubble Screener is a free interactive stock-market visualization tool that renders major indices as bubble charts, mapping metrics like price, performance, market cap, and volume.

Reviewed by the Conversion Gems editorial team ·
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Pricing
Free Trial
Best for
Investors
Category
Finance, Billing & Accounting
The bottom line

A fast, free visual pulse-check on major stock indices — best for a quick macro read, not deep fundamental analysis.

6.3
Our score
6.3 / 10
Conversion Gems editorial verdict
Free
Features5/10
5 - visual bubble charts are well-executed but no screener filters, alerts, or fundamental data.
Value9/10
9 - completely free with no hidden tiers; hard to beat for the price.
Ease of use9/10
9 - zero signup, instant load, highly intuitive visual interface.
Ecosystem3/10
3 - fully standalone; no API, no integrations, no export.
Support3/10
3 - indie/solo project; no documented support channel beyond the site itself.
What it really is

Bubble Screener — free interactive bubble-chart visualizer for stock market indices.

Our take

DB summary was completely wrong: it described a recruitment screening tool, not a finance product. Bubble Screener is a lightweight, fully free stock-market visualization tool that renders major indices (S&P 500, Nasdaq 100, Dow Jones, FTSE 100, DAX, Nifty 50, Sensex) as interactive bubble charts. Bubble size and color map to metrics like price, performance, market cap, or volume, with data refreshing every ~5 minutes. Price tier in DB was listed as 'free_trial' but the tool is simply free with no paid tier at all.

Why we rate it

Hard to fault a zero-cost tool that delivers genuine at-a-glance market insight. The bubble-chart format makes sector rotation and daily gainers/losers intuitively readable in seconds.

The catch

No fundamental screening filters, no alerts, no portfolio integration, and no API. Useful for a macro visual snapshot but stops well short of a full stock screener.

Best for
Retail investors wanting a quick visual market overview
Traders monitoring sector momentum across global indices
Finance students learning market dynamics through visual tools
Not good for
Quantitative analysts needing screener filters or backtesting
Fundamental investors seeking earnings, P/E, or DCF data
Teams requiring API access or workflow integrations
Friction report
Time to value
Fast: open the site and the bubble chart loads immediately — no signup required.
Scale breakpoint
No scaling path; the tool has a single free tier with no upgrade, so power users will outgrow it quickly.
Walled garden
Low: web-based viewer with no account lock-in, though there is no data export or API.

Frequently Asked Questions

Alternatives

Step up

Finviz Elite for advanced screening, real-time data, and alerts.

Lighter alternative

Finviz free bubbles view for a similar US-only snapshot.

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Tags

#ScreeningTool#BackgroundChecks

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