| What it does | Free options calculators and trade analyzer that shows its assumptions
| Free browser tools for PDF, image and UK money tasks that process files locally
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
| GB
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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
| - PDF merging and splitting
- Image conversion between HEIC, JPEG, PNG and WebP
- UK take-home pay calculator with income tax and National Insurance
- Stamp duty calculator for England and Northern Ireland
- Size converters for clothing, shoes, bra and ring sizes
- VAT, mortgage and loan calculators
- All tools run locally in the browser without uploading files
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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 file processing and calculations run in your browser with no uploads to servers
- UK tax calculators use official rates from HMRC and GOV.UK reviewed after each Budget
- Covers Scottish and Welsh tax rules separately with clear documentation
- No accounts or contact forms required
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 7 ● no change since last check | Not checked yet ● 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 | 3 |
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