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Started building a simple invoicing app after a friend asked — 30 users are already waiting
r/SideProject
5/31/2025
SAAS TOOLS
| SaaS | URL | Category | Features/Notes |
|---|---|---|---|
| Number Flow | https://number-flow.barvian.me/ | React library | Animated number transitions |
| React PDF | http://react-pdf.org | PDF generation library | Used for generating invoice PDFs |
| Tanstack Start | - | React framework | Used in frontend development |
| Hono | - | Web framework | Used in backend development |
USER NEEDS
Pain Points:
- Complexity of existing invoicing tools
- Need for simple, user-friendly invoicing solution
- Difficulty managing organizational relationships
Problems to Solve:
- Simplifying invoicing process for small businesses
- Providing clear PDF previews of invoices
- Implementing login functionality for early testers
Potential Solutions:
- Building a minimalist invoicing app
- Adding discount and tax support
- Implementing scheduled email functionality
GROWTH FACTORS
Effective Strategies:
- Building based on real user needs and feedback
- Starting with a simple MVP to validate concept
Marketing & Acquisition:
- Leveraging personal network for initial user acquisition
- Showcasing product through Reddit community
Monetization & Product:
- Keeping product simple to differentiate from competitors
- Planning for future monetization possibilities
User Engagement:
- Engaging with users through Reddit comments
- Providing early access to interested users