| What it does | Independent guide to home backup power with sizing calculator, cost data, and brand comparisons
| Free online Texas Instruments TI 84 Plus CE graphing calculator simulator for algebra, calculus, matrices, and standardized test prep
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| Stage | Not given
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| Founded | Not given
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| Based in | US
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Generator size calculator that determines running watts and starting surge from appliance list
- 62 appliances in wattage database
- Installed cost ranges for whole house and portable setups
- Fuel type comparison and tank sizing guidance
- Published manufacturer specification data
- Transfer switch installation and setup guidance
| - High-resolution color graphing with function plotting and curve rendering
- Numerical derivatives and definite integrals for calculus
- Matrix operations and linear system solving with row reduction
- Statistical regressions and data list analysis
- Fullscreen mode with keyboard shortcut support
- TI-30XS MultiView scientific calculator mode
- Mobile responsive design with touch-friendly buttons
- Works on Chromebooks, iPads, Mac, Windows, and Linux browsers
- No installation, account creation, or downloads required
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| What makes it different | - No brand sponsorships; independent research that takes no brand money
- Published data sources with every guide; cites specifications and affiliate commission model
- Calculator automates load math with running watts, starting surge, altitude, and safety margin
- Tracks real installed cost ranges rather than list prices
- Free tool that costs nothing to use
| - Completely free with no paywalls, subscriptions, or account requirements
- Privacy-first architecture: calculations stay on your device, never transmitted to servers
- Accurate emulation of authentic Texas Instruments hardware syntax and functions
- Distraction-free learning environment with no ads or pop-ups
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| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | 6 ▲ +1 (up) since last check | Not checked yet ● no change since last check |
| Trust Flow (Majestic) | 8 | 0 |
| Citation Flow (Majestic) | 30 | 18 |
| Referring domains (Majestic) | 71 | 2 |