1. User level access. (User can be register web base or Android or iOS apps)
2. Admin users can be add data (Have many Projects by common Indicators)
3. Normal users can be only view Maps and data (Select by Project)
4. Develop Android or iOS App in same data.
Send your Price & Full work details with Flowchart (How to develop - Using software, Open-Street or Google Map - Other Charges - Cloud base, Web server, Domain Registration & etc... )