App collection · October 2026 Demo on request
Ten mini apps for small businesses
Ten small tools for neighborhood businesses, each with its own site: WhatsApp catalog, bookings, PDF quotes, inventory, repair shop, cash register, store credit, loyalty, orders and costs.
What it is
Each app does one thing and does it well on a phone: Miga (catalog and WhatsApp orders), Turno (bookings), Cotiza (PDF quotes), Bodega (inventory), Taller (work orders), Caja (daily cash and closing), Libreta (store credit and payments), Vuelve (QR cards and rewards), Encargo (orders with a deposit) and Costea (recipe costs and margin).
They’re working demos: everything is saved in the browser, they never charge or send messages on their own, and each one has its own site.
What I built
- Ten independent sites, each with its own interface, data and three-step help
- Built for phones: tables turned into cards, touch-friendly controls and visible keyboard focus
- Quotes that download as PDF and orders composed as a WhatsApp message
- Search across catalog, inventory, repairs, cards and orders
- Validation that catches mistakes before saving: payments up to the balance, resulting stock, cash variance
The hard parts
Ten apps, one standard
Each keeps its own data and site, but they share the same interface rules: quick actions, errors next to the field and save confirmations.
Tested at 390 px
The main flows of all ten were checked with no overflow at 390 px wide, and the logic of nine with automated tests.