| 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 one rep max calculator with seven formulas and percentage charts
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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
| - Seven 1RM formulas (Epley, Brzycki, Lombardi, Lander, Mayhew, O'Conner, Wathen)
- Average of all formulas as recommended result
- Percentage chart from 100% to 50% of 1RM
- Rep-max table for 1RM through 12RM
- Support for kilograms and pounds
- Exercise-specific formula defaults
- RPE adjustment for reps in reserve
- Multiple exercise categories (chest, back, legs, shoulders, arms, Olympic)
- Browser-based history with no account
- Warm-up sets calculator and rep-max table
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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
| - Uses seven published formulas instead of one, showing average and range for transparency
- No account, sign-up, or data storage required
- Covers dozens of exercises with exercise-specific guidance and lift variations
- Warns about formula accuracy limits and when estimates are unreliable
- Includes linked tools for related calculations (DOTS, Wilks, training max, FFMI, VO2)
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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 | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 6 | 0 |
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| Citation Flow (Majestic) | 12 | 0 |
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| Referring domains (Majestic) | 1 | 0 |
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The Housing Model
OneRepMax