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Mobile POS App - Introduction

The NAOS POS App is the mobile application that turns your Android tablet or phone into a full point of sale. It works offline, syncs automatically, and supports receipt printing.

Requirements

  • Device: Android 10+ tablet or phone.
  • Storage: At least 200 MB available.
  • Connection: WiFi recommended (works without internet in offline mode).
  • Optional: ESC/POS thermal printer (Bluetooth, WiFi, or USB).

First Launch

1. Sign In

  1. Open the NAOS POS app.
  2. Enter your business slug (e.g., “myrestaurant”).
  3. Enter your email and password.
  4. The app will download initial data (products, customers, settings).

Select tenant

Enter username and password

Sign in with PIN

Initial data loading

2. Register Terminal

On first launch, the app registers itself as a terminal:

  • A unique device ID is assigned.
  • It is linked to the branch configured for your user.
  • The initial invoice numbering sequence is set.

Terminal registration

Registered terminal verification

3. Set Up Printer

Go to Settings > Printers to configure your thermal printer. See printer setup guide

4. Digital Certificate (DGI)

If you issue electronic invoices, set up the P12 certificate. See certificate guide

Main Screens

The app has a bottom bar with the main screens and a side menu for additional features.

Bottom Bar (Tabs)

TabFunction
SalesMain point-of-sale screen
ProductsProduct catalog by category
CustomersCustomer management
TablesTable map (Restaurant mode only)
OrdersOrder history

Side Menu (Drawer)

SectionFeatures
HomeDashboard with daily KPIs
OperationsQuotes, Returns, Reservations
CatalogInventory Lookup, Purchase Entry, Promotions
FinanceCash Register Closings, Reports
AdministrationPrinters, Electronic Invoices
My AccountProfile, Settings, Sign Out

Side menu with options

Dashboard

The dashboard displays a summary of the day:

  • Daily sales (total amount).
  • Number of orders.
  • Average ticket.
  • Breakdown by payment method.
  • Quick actions for the most-used features.

Home screen

Dashboard with KPIs

Quick access shortcuts

Dark Mode

The app supports dark mode to reduce eye strain:

  • Enable it from Settings or the toggle on the Dashboard.
  • It applies across the entire interface.

Dark mode selection

Languages

Available in three languages:

  • Spanish (default)
  • English
  • Chinese (中文)

Change the language from Settings > Language.

Language change

Settings

Settings screen

Other settings

User profile

Responsive Design

The app adapts to the device:

  • Tablet (landscape): Split view with catalog and cart side by side.
  • Tablet (portrait): Optimized vertical layout.
  • Phone: Compact interface with simplified navigation.

Specific Guides