I built an Android invoicing app for freelancers — looking for honest feedback

I recently launched BizNavi Invoice, a simple Android invoicing app for freelancers, sole proprietors, and small businesses.

I built it because many small operators need a practical way to create and manage invoices from their phone without the complexity of a large accounting system.

The app focuses on a simple mobile workflow, invoice management, PDF export, and everyday usability.

I’m especially looking for feedback from Android users outside Japan.

I’d appreciate honest feedback on:

• whether the app is easy to understand at first launch
• the English wording and UI
• the Google Play presentation
• features that feel missing
• anything that feels unnecessarily complicated

Feedback from freelancers, sole proprietors, and small business owners would be especially valuable.