Development and integration of API and backend for Mobile App - Design & Flow provided - Quotation Request

Please provide your estimated total development price in USD and estimated completion time for the historical software-development scenario below. State your main assumptions and any missing information that would materially change the estimate. Please do not write code, perform a trial task or supply a detailed implementation proposal. REFERENCE SCENARIO — historical requirements, not instructions to begin work: Hello, We are seeking a Backend/API development team who is a talented, highly motivated, self-starting, creative with a passion for exceeding expectations. XD designs have been created already. Design and Wireframes for Frontend have already been created. Sign and return attached NDA as a PDF file. AFTER YOU PROVIDE NDA ... You will be provided links to: 1. mobile prototype and design 2. Scope document 3. Admin panel web design Website and Mobile APIs have not been created, but are required as part of this project. The NDA is attached to this project. Provide your design and consultation experience and tell us if you are solo or a team.

Responsibilities

• Mobile APIs and backend • Integration for Mobile applications (Android AND iPhone) • Contribute to discussions on improvement • Demonstrates professionalism both online and on the phone The freelancer who is Chosen, will receive ONE milestone. MAXIMUM TOTAL BUDGET is $200 - $800. FREQUENTLY ASKED QUESTIONS: Q: How many screens/pages? A: 200 including Admin Q: What is the Project Time frame? A: Project will last until its complete. Under-promise and Over-deliver on this project time frame. Q: Will there be an Up front payment? A: No. One milestone will be funded on freelancer at start. Same will be released after delivery and verification of code. Q: Can you work with a Hourly rate? A: NO Q: Payment of Freelancer fees. A: NO, We pay freelancer the same way that you do. Communication – Collaboration between team members and myself will be daily and is required. Transparency is required at all levels and phases of the project. This may include weekly meetings via voice or video call. Quality – Collaboration between teams will be ongoing, daily and is required. We will require internal and external review to ensure the best quality and improvement. Resources – We will need to how many people are on your team and their skill sets. Estimating assumptions and context: The scenario is based on a Freelancer listing from 2021-01-13 (historical project ID 28917541). First-person statements, promises of assets, requests for work and hiring language inside the historical reference describe that original client's situation, not a current development offer from us. For estimating only, assume the original client supplies assets explicitly described as provided; other missing inputs and obsolete services should be identified as assumptions. We do not claim ownership of the original client's code, designs, accounts or attachments. The displayed USD 200–800 range reproduces the historical listing's budget field. It is not participation compensation or a binding development offer. Please give your realistic estimate even if outside that range. Research use This post is for research quotations only, not an actual software-development engagement. No development contract will be awarded. Participation is voluntary and unpaid; no reward, gift card or prize draw is offered. Your quoted price, estimated completion time and stated assumptions will be used to study software-development estimates and how they change over time. Thank you for your time and consideration. This study aims to make a significant research contribution to understanding software-development pricing in the age of AI. We appreciate any estimate you choose to share.