Flutter Developer - Simple App API Integrations - 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 All, We need to make flutter app of below module functional. API and all app screen are ready. We need to do it within next 19th October :- - Splash Screen - 4 Screens - Login - 1 Screen - Registration with Phone OTP [Firebase] + Referral code - 2 Screens - Forgot Password - 2 Screen - Profile + KYC - 2-3 Screen - Refferal List - 1 - Wallet + Transaction to shown earned point - 2 Screens - Walk & Earn with GPS - 5 Screens - Drink Water + Push Notifications - 2 Screens - Insurance - Beneficiary Add - 4 Screens - Add Family - 2 Screens This is an ongoing project. We want to hire someone who worked this module efficiently. We will create milestone but payment will be release after complete the above features. Workflow video - https://drive.google.com/file/d/1yaWf9vV4LE-Tzij3JHMLVh3CbtOOYb_a/view?usp=sharing Rules :- - Everyday i need IPA & APK for checking progress of work. - Need to upload it on iOS and Android both. - Need to provide previous live flutter app link. Remember Timeline is 19th October! If you can't then please don't bid. If the work is not done then we can not release the payment. Estimating assumptions and context: The scenario is based on a Freelancer listing from 2022-10-12 (historical project ID 34909247). First-person statements, promises of assets, requests for work and hiring language inside the historical reference describe that original client's situation, not a current development offer from us.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 30–250 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.