BillMyWeek vs Firmary
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
BillMyWeek compared with Firmary
| Detail | 
BillMyWeek | 
Firmary |
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| What it does | Weekly day-rate invoices for UK trades and contractors
| Command line interface for firm staff, scripts and AI agents to access practice data
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| Stage | Not given
| Not given
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| Founded | Not given
| Not given
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| Based in | GB
| US
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| Pricing model | Free trial
| Not given
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| Pricing | Free trial for 14 days with no card needed. Then £1.99 per month or £19.99 per year. Cancel any time.
| Not given
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| Key features | - Automatic weekly invoice filling based on previous complete week
- CIS deduction handling (20%, 30% or 0%)
- VAT invoicing with optional reverse charge
- Copy last week to repeat previous invoice details
- Email invoices directly to clients with PDF attached
- Automatic payment reminders up to twice when overdue
- Multiple export formats: PDF, Word, Excel, CSV, PNG
- Tax year summary with expenses for Self Assessment
- Mobile browser app with home screen installation
| - Cross-platform installation for macOS, Linux and Windows
- Full-screen terminal application with home, work, clients and billing screens
- Commands for clients, contacts, tasks, invoices, engagements, requests and messages
- Operation search and execution with customizable fields
- Agent sign-in with JSON output and approval workflows
- MCP server integration with Claude, Codex, Cursor and VS Code
- Approval system with exit codes and approval wait functionality
- Service token support for CI environments
- Tab completion for commands, fields and client names
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| What makes it different | - One-minute invoice generation after setup with Copy last week
- Automatic day rate calculation with precise penny rounding
- Integrated CIS and VAT compliance for UK construction work
- No app download required; runs entirely in mobile browser
- Built specifically for UK Construction Industry Scheme rules
| - Unified interface applying the same permissions and approvals across CLI, app, API and MCP
- AI agents can access firm data while subject to approval workflows and firm policies
- Integration with major AI coding platforms through MCP server support
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 3 ● no change since last check | 25 ● no change since last check |
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| Trust Flow (Majestic) | 4 | 0 |
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| Citation Flow (Majestic) | 17 | 24 |
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| Referring domains (Majestic) | 5 | 10 |
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4 details filled in for both companies.
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