Madam/Sir, I am contacting you in order to get a

Madam/Sir,
I am contacting you in order to get a quotation for the development of a Native android and a web progressive app.
The app we want to develop is for our non-lucrative organization which fight against food wastage. The app, based on an “uber” liked model, will put into relationship 3 types of user with different profiles and roles. Options like geolocalisation, push notifications, market place, online payment and interaction between members will be needed.
The app has been designed and we already have a document explaining and detailing very well what is expected.
Please note that we would like to develop this for France and depending on the success of the apps and the concept, this is scalable to the European Union (Meaning a potential for much more future developments)
What would be the best solution with the minimum investment according to you? We would like to have an idea of the price range before engaging into further discussions.
Thank you in advance.