I will create well informative documents for your software using my expertise over 7 years of experience in IT and market research. I will create the following type of document based on your project status: 

• Document Types
• BRD (Business Requirement Document)
• SRS (Software Requirement Specifications)
• API Documents
• Test Cases & Test Scenarios
• HLD (High-Level Document)
• LLD (Low-Level Document)
• FRS (Functional Requirement Document)
• RFP (Request for proposals)
• Feature Listings
• Release Manuals / User Manuals
• UML. Diagrams (Class Diagram, ER Diagram, Architecture, Functional flow, User Journey, Architecture, Use Case Diagram, Sequence flow, Layered Architecture, etc. )
• Implementation Plan
• Final Report
• Gap Analysis (As in - To Do )
• Database Dictionary
• Business Plans
• PPT Presentation
• NDA (Non-Disclouser Agreement)
• Prototype/ Wireframing

I use the following tools for 

Diagram: Draw.io, Lucidchart, Creately

Prototyping: Balsamiq

Documentation: MS Office, Google Docs, Sheets, etc