The Nkataa Mobile App Download our mobile app and shop for home or office on the go… Shop for groceries, household essentials and so much more straight from your smartphone or tablet, then have everything delivered to your to your home or office at a time that suits you. Browse thousands of items even if you’re offline. Start an order on your computer and finish it on the app. Find out up-to-date delivery info on your upcoming order. Get in-depth nutritional and dietary information for your shopping.