Create an app for IOS and Android as well as Computer

I want this app to work on iphone, ipad, and android and computer as well. Can you make it work on computer? Can you give me some technical details on how this can be done? Sorry I am not an expert in this field. I want to develop an application based on the following points. I have 45 days & a budget of less than $3,000. Plz advise if u can do it & how you will do it, I need some details to feel comfortable before going ahead. 1. Application that works on both Android & ios systems 2. About 50 pages, half in English & half in Arabic. Each page has text, drawings & link to a short video. (both Arabic & English test will be ready for you to use directly) 3. One page is called ”Test you Knowledge”, users can answer questions (select an answer, True or false) & get a feedback of their answer if correct or incorrect. The overall results of the test e.g. 90% correct, should go to the admin for review 4. There will be a page with a form where the user will fill data e.g. Name, Age, Sex, history of diabetes, weight, ….. when filling this form the system should generate a report to the user with his condition according to answers e.g. if Q1,3,4 are “Yes” then the report will show a red ribbon and will request user to go to doctor ASAP, if the answers are all “NO” the system will generate the report with green ribbon & with a request to just follow up, if one is “Yes” it will be yellow ribbon. 5. The admin will get a collective report about the answers e.g. 60% of users said “Yes” to Q1, 50% said “Yes” to Q2, …..