| What it does | Paycheck, tax and money calculators with formulas and sources
| 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 | - Paycheck calculators for all 50 states and DC
- Federal income tax and W-4 withholding calculators
- Savings, retirement, credit and loan calculators
- Roth IRA calculator
- CD calculator
- Savings calculator with compound interest
- Mortgage payoff calculator
- Loan payment calculator
- Credit card payoff calculator
- Dividend calculator
| - 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 | - Shows all formulas and cites official sources
- Calculations run entirely in browser without collecting personal data
- Updated annually with current tax year data
- Explains assumptions and provides reproducible examples
- Free with no ads or product sales
| - 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) | 10 ▼ −1 (down) since last check | Not checked yet ● no change since last check |
| Trust Flow (Majestic) | 7 | 0 |
| Citation Flow (Majestic) | 23 | 18 |
| Referring domains (Majestic) | 14 | 2 |