Integrating OneSignal Mobile Notification to Existing iOS application - 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:

Project Title: Integrating OneSignal Mobile Notification to Existing iOS application

Overview:
We are looking for an iOS developer to integrate the OneSignal Mobile Notification SDK into our existing iOS application.

Requirements:
- Experience in iOS app development
- Familiarity with integrating third-party SDKs

Tasks:
1. Review the existing iOS application and its codebase
2. Familiarize yourself with the OneSignal Mobile Notification SDK documentation and specifications provided
3. Integrate the OneSignal Mobile Notification SDK into the iOS application
4. Test the integration to ensure proper functionality
5. Guidance on how to use and manage the implemented push notification feature

Deliverables:
- Integrated OneSignal Mobile Notification SDK into the existing iOS application
- Functional push notification feature that aligns with the provided documentation and specifications
- Guidance on how to use and manage push notification from One Signal platform

Estimating assumptions and context:
The scenario is based on a Freelancer listing from 2023-10-30 (historical project ID 37373114). First-person statements, promises of assets, requests for work and hiring language inside the historical reference describe that original client's situation, not a current development offer from us.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.