Android ios web app (Cross Platform OR Native)

Hello friends!, We need to develop an app for android/ios/web page.(cross platform OR native)
With better cooperation, we will be happy to continue cooperation.

The application is simple.
This project can make the world more noble and humane.


The download process and the first thing the user sees is information about the service and organization,
idea. () 5-7 seconds after it is transferred to the first activity (page)

The first page, top changing summer news
(which are updated, edited on the web page by the administrator, in the personal account)

below button
1 "Submit request"
2 "Legal advice"
___________________________________________________

--1 "Send request" :--
second activity, text field (description of a comment, appeal),

a window with a file attachment, + a comment about the allowed formats / sizes.
or turn on and take a photo (from 1 to 7) or video.
(files are sent to the organization's work mail with a text about the filled windows or a mark sent anonymously)

below Last Name First Name (Anonymous)
below City (Anonymous)
below Phone (Anonymous)
checkbox to determine geolocation, (if desired)

the field is anonymous, (if you check the box here, files can be sent without filling)


The design of the application is the same as that of the site. (yellow, white, blue) We will provide the site
web page with the same functionality, but with the ability for the administrator to edit the news feed from the first activity, interval text picture.

___________________________________________________

--2 "Legal Advice"--

Redirects to the activity in which the fields to fill
the first field is the message text
second time convenient for communication --> specify or as soon as possible
send the third.


The candidate is required:
- on what can this project be implemented (native / crossplatform)
- cost and terms of implementation?
- is it possible to support for some time or after testing the application will work like clockwork?
- please comment all code



Thanks for your attention friends! =) waiting for you