No Code stock management and billing app

No Code stock management and billing app(very simple) by using any of the no code platform(Preferably Appsheet) which is easy to use and can be easily managed, also it should be cost effective.

Features:
- Inventory tracking
- Sales tracking
- Purchase tracking
- Billing
- Bar code/ QR code
Platform preference: Both Desktop and mobile app

Expected number of users: 2-3

Ideal skills and experience:
- Knowledge of stock management and billing systems
- Experience in developing no code application
- Ability to create user-friendly interfaces
- Strong problem-solving and troubleshooting skills