Twinr is a really useful solution, especially I think it will be perfect for online stores. Most users use phones and using Twinr you can improve the lives of your customers in a matter of minutes. Using the web version is not as convenient as using the application.
The system itself is quite convenient and understandable, which simplifies the whole process, even a non-technical specialist can easily use Twinr
It is also possible to immediately monetize your application and make it the main or additional income.
If necessary, you can add push notifications, which is an extremely effective tool.
Good job!