Is it possible to make a solution for mobile phones without an app?

When we were working on the realization of the talk2plant.com project, we had a rather typical task – to implement the processing of information between sensors and users. The traditional solution – creation of a mobile application – requires significant efforts ( = time and money) for application development (iOs, Android), publication on apple store or playmarket and its constant support and updating.
Typical approach with mob.app.

To get around these disadvantages we took a fundamentally different path: organizing interaction with the user via messenger. The user receives information in the form of text or voice messages, pictures or videos. Some messengers allow you to create a simple menu to interact with a user. And the user responds in simple human language using his favorite messenger. During development, we implemented information exchange with sensors and third-party APIs and integration with ChatGPT to classify and interpret messages from the user, as well as to diversify and humanize messages from the system to users.

It turned out to be very interesting and efficient. I see the point of translating this experience into the creation of a platform that will allow you to create similar applications very quickly. This allows for a number of benefits:
Reduced development and support costs and time
User does not need to install and learn another application
Human-like user interaction in any language
AppLess platform structure
Here is a structural diagram of the platform, which already includes interfaces for working with sensors, messages and generative AI, and also has a built-in DB and admin panel for configuration, user management, and viewing statistics.

What do you think? Do you know about any similar solution? Does it make sense? Would you be willing to join a team to create such a platform?