| What it does | Free attendance calculator for students to track how many classes they can safely miss
| Free ecommerce profit calculators for online sellers
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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
| 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
| - Net profit margin calculation per order
- Marketplace and payment fee auditing
- Shipping, packaging, storage and labor cost tracking
- Return and defect risk reserves
- Break-even price and maximum ad spend calculation
- Monthly profit forecasting
- Platform-specific calculators for Amazon FBA, Shopify, TikTok Shop, Etsy, and eBay
- Landed cost consolidation for import overheads
- Client-side processing with no data tracking
- Real-time reactive calculation updates
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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
| - Instant reactive calculations as you type
- Pre-loaded platform presets for global multi-currency operations
- Comprehensive suite covering multiple marketplaces and payment processors
- Automated rate syncing with financial institutions
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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) | 1 | 0 |
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| Citation Flow (Majestic) | 19 | 9 |
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| Referring domains (Majestic) | 3 | 1 |
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CalcAttendance
ProfitsCalc