| What it does | Construction calculators that show their math
| Snap a photo to check what something is worth based on current listings
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Free: 1 scan per day on website, 3 scans total on iPhone app then 1 per week. Premium Weekly: $4.99 per week. Premium Yearly: $29.99 per year with 3-day free trial.
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| Key features | - Every constant cited to ASTM, CMHA, or datasheet
- Two calculation methods shown separately
- Free and private, no account required
| - Photo identification using AI for brand, model and condition
- Real-time listings from Google Shopping and eBay
- Price range with confidence levels based on listing data
- Condition adjustment that updates price in real time
- Specialist catalogues for coins, banknotes and trading cards
- Live metal prices for gold and silver
- Up to three photos per scan for detailed matching
- Collection tracking to monitor item values over time
- Labeled rough estimates when live listings are insufficient
- Full transparency with access to actual live listings and photos
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| What makes it different | - Every constant traced to named source and shown next to result
- Shows both methods when they disagree instead of averaging them
- Solves massive discrepancy in published block fill volumes
- Calculations run in browser with no data storage
- Built on version-controlled, auditable reference data modules
| - Uses current marketplace listings instead of AI training data or memory
- Shows confidence levels and actual proof you can verify yourself
- Filters out outlier listings to avoid inflated or deflated prices
- Covers specialized markets like coins and trading cards with expert sources
- Never invents numbers when data is insufficient
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| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | 8 ● no change since last check | Not checked yet ● no change since last check |
| Trust Flow (Majestic) | 5 | 0 |
| Citation Flow (Majestic) | 22 | 0 |
| Referring domains (Majestic) | 7 | 0 |