| What it does | Electronics calculators for makers
| Free mortgage recast calculator and educational guides for homeowners
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
| US
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| Pricing model | Freemium
| Free
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| Pricing | Free: $0 forever. Pro Monthly: $4 per month, cancel anytime. Pro Lifetime: $29 one-time payment.
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| Key features | - Resistor Color Code: read 4, 5 and 6-band resistors or find bands for a value
- LED Resistor: pick the current-limiting resistor and power rating
- Voltage Divider: output voltage, loading effect, or solve R2 for target Vout
- RC Filter: cutoff frequency, time constant and attenuation at any frequency
- LC Resonance: resonant frequency, characteristic impedance and Q
- 555 Timer: astable frequency/duty cycle and monostable pulse width
- Battery Life: runtime from capacity, active/sleep current and duty cycle
- PCB Trace Width: IPC-2221 trace width for current and temperature rise
- Electronics Unit Converter: SI prefixes, AWG to mm², mil to mm, dBm to mW, oz copper
| - Estimates new monthly principal and interest payment after recast
- Calculates monthly payment savings
- Projects estimated payoff date after recast
- Estimates total interest saved from principal reduction
- All calculations run locally in browser with no data transmission
- Educational guides on mortgage recast concepts and strategies
- Comparison of recast versus extra principal payment strategies
- Information on mortgage recast fees and lender conditions
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| What makes it different | - Real E-series resistor values, not ideal numbers
- Engineering notation input and result sharing as links
- No ads, no tracking, no sign-up for free calculators
- Whole-device BOM costing and battery-life summary in Pro
- Works on phone at the bench
| - Free tool that keeps all mortgage data private in your browser
- No registration or account required to use the calculator
- Plain-English guides help homeowners prepare questions for their servicer
- Educational focus on practical mortgage decisions with appropriate caution
- Explains differences between recast and refinance options
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 1 ▲ +1 (up) since last check | 1 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 3 |
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| Citation Flow (Majestic) | 0 | 11 |
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| Referring domains (Majestic) | 0 | 1 |
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