Need to modify existing react native mobile app in android and ios - 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:

i have react native mobile ecommerce app single vendor -- want to add more features where home page of the app is already dynamic coming from admin
1) add arabic language RTL , not by adding string.xml it is dynamic
2) add Notification icons in upper right corner and add notification module, which will display all notifications sent to app and link them to target
3) in add address and manage address google map integration he can choose address from map and add and manage
4) add splash screen in .gif when mobile app starts
5) on checkout , when m selecting address it not selecting its givin error add address, though address is already there
6) change UI of the mobile app, make it more user friendly and more attractive like font, color, image representations, change product page proper image representations on home page and product page.
7) Sign up and sign in via gmail and apple id and OTP
8) in shipping pick up from store it should give which store to pickup , api i will provide
9) in home page have to do vertical scrolling of 2 modules , currently as all are coming in horizontal scrolling
9) Bulk push notifications with image and without image have to send on mobile.
10)help in deploying app on playstore and apple store
11) Pull to refresh on home page and other pages
12) Bottom menu not coming on all pages only coming in some page.
13) i have already done some UI changes on home page and have generated apk for android but ios have not touched so u need to do that. also
14) product share button on product pages
15) share app, facebook , instagram, whatsapp, links to add in settings page
16) on exit app it should ask are u sure to exit
15) support
Backend is already there
API are all ready

Estimating assumptions and context:
The scenario is based on a Freelancer listing from 2023-01-11 (historical project ID 35724225). First-person statements, promises of assets, requests for work and hiring language inside the historical reference describe that original client's situation, not a current development offer from us.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.