The cheapest way to make international calls from your browser
Stage
Growing
Not given
Founded
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Based in
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Pricing model
Freemium
Paid
Pricing
Free 14-day Pro trial with no credit card required. Pro subscription options: $19/month (billed monthly), $144/year (save 37%), or $12/month for founding members (locked forever, first 150 subscribers only).
Credits starting from $5 up to $100. Call rates vary by destination country. 25% off first top-up with code DF25.
Key features
Full S&P 500 market scanner with 500+ tickers
IV Rank and Edge Score for options signals
Options signals including Greeks, skew and term structure
Events calendar for earnings, ex-dividend and clinical trials
Risk heat map dashboard for market overview
Strategy scanners including Wheel and Covered Calls
Browser-based calling without app downloads
Instant account setup in minutes
Works on desktop, tablet, and mobile devices
HD voice quality
Dedicated or existing caller ID
Global coverage to over 200 countries
WebRTC end-to-end encryption
Call history visibility
Mobile app availability
What makes it different
Combines earnings, legal, clinical trials, SEC filings and FDA actions in one risk score
Edge Score identifies premium-selling opportunities by combining IV Rank and catalyst risk
Risk score instantly re-weights to any option expiry window without new scan
Data updated every 30 minutes for S&P 500 stocks
Built by independent team of options traders with no VC roadmap
No app download required - calls directly in browser
Transparent pay-as-you-go pricing with no hidden fees