| What it does | Rent vs buy planner showing which option you can afford based on your take-home pay, kids, childcare, cars and debts
| Free epoxy resin calculator for mold batches, casting voids and tabletop coatings
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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 | Freemium
| Free
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| Pricing | Free to build and edit your plan, no account required. The Housing Model Pass adds detailed results for $59 for 12 months, one payment with no automatic renewal and a 14-day refund.
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| Key features | - Compare renting, buying now, buying later, and starter home then upgrade paths
- 30-year wealth comparison across housing paths
- Compare keeping current home as rental or buying a second home
- Plan retirement and early retirement with drawdown analysis
- Printable PDF report of your full plan and analysis
| - Calculate mold cavity volumes from dimensions or enter known volumes
- Combine multiple molds and piece counts in a single batch plan
- Split totals using product volume or weight ratios
- Add material allowance percentages for wastage
- Estimate kit quantities and material costs
- Support metric and US imperial units
- Save projects locally in browser without creating an account
- Export batch sheets as PDF or CSV
- Calculate deep pour epoxy with layer allocation
- Calculate tabletop coatings with edge coverage
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| What makes it different | - Runs entirely in your browser with no data uploaded to servers
- All calculations performed locally on your device with inputs never sent to company servers
- Free to build and edit plans; pay only for detailed results and printable reports
- Built by a solo maker for his own rent-or-buy decision with automated math verification
| - Published formulas and methodology transparent with no proprietary hidden calculations
- Calculations cross-checked against a separate Python implementation using 100-digit decimal arithmetic
- Handles irregular molds using known volumes without forcing geometry estimates
- Shares batch plans via URL without storing projects on servers
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 1 ● no change since last check |
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| Trust Flow (Majestic) | 6 | 0 |
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| Citation Flow (Majestic) | 12 | 19 |
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| Referring domains (Majestic) | 1 | 6 |
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The Housing Model
ResinBatch