| What it does | Free attendance calculator for students to track how many classes they can safely miss
| Free construction, trades and industrial calculators that work offline
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
| AE
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Calculate how many remaining classes can be missed while staying at target
- Determine how many consecutive sessions must be attended to recover if below threshold
- Track attendance for multiple subjects separately
- Browser-based with no sign-up or account required
- All calculations performed locally without sending data to servers
| - 130+ specialized calculators for construction and trades
- Instant imperial and metric unit toggling
- Calculations aligned to verified industry standards
- Zero tracking and complete privacy on calculations
- Real-time material pricing index for concrete, lumber, and rebar
- Custom B2B calculator embedding and white-label licensing
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| What makes it different | - No account or sign-up needed – instant access with no data collection
- All calculations happen in your browser – attendance data never leaves your device
- Supports multiple institutional requirements with 75%, 80%, 85%, and 90% target options
- Tracks multiple subjects simultaneously to prevent any single module from sliding below threshold
- Built and maintained by a single developer focused on honest, accurate answers
| - Engineering-grade accuracy citing primary standards like ASTM and ISO
- Dual-market architectural support for US and GCC specifications
- Complete client-side processing with zero external data transmission
- No setup, registration, or login requirements
- Transparent calculation methodology with published test vectors
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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) | 1 | 0 |
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| Citation Flow (Majestic) | 19 | 13 |
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| Referring domains (Majestic) | 3 | 1 |
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CalcAttendance
buildercalc