| What it does | Free options calculators and trade analyzer that shows its assumptions
| Free calculators and file tools that run entirely in your browser
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Trade analyzer for single and multi-leg positions
- 58 strategy templates
- Black-Scholes-Merton Greeks calculator
- Scenario matrix across price and time
- Volatility labeled by source
- MarketData.app integration for option chains
- Browser-based position storage
- Shareable position links
- 20+ focused calculators
- Plain-English learning library
| - Word and character counter
- PDF merge and manipulation tools
- Image compression and format conversion
- Currency converter with live exchange rates
- JSON formatter and validator
- Recipe scaler for cooking measurements
- Percentage and fraction calculators
- Time zone converter and date calculations
- Health calculators for BMI and TDEE
- Local browser processing with no uploads
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| What makes it different | - Shows which numbers are exact arithmetic, which are estimates, and which come from user input
- No account required and positions stay in browser
- Never hides assumptions or pricing
- Server never sees user data or tokens
- Exact expiration payoff calculations
| - All processing happens locally in your browser with no file uploads to servers
- Completely free with no accounts, login requirements or hidden payments
- No tracking or advertising, with optional cookie-free analytics only
- Comprehensive guides and explanations for every tool and calculation
- Independently maintained by a single developer focused on quality and accuracy
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 7 ● no change since last check | 1 ● no change since last check |
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| Trust Flow (Majestic) | 4 | 0 |
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| Citation Flow (Majestic) | 20 | 17 |
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| Referring domains (Majestic) | 9 | 4 |
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