Casual Puzzle Mobile Game Development

​I am looking to develop a mobile casual puzzle game similar in style and functionality to this reference app on Google Play:
Reference Link: https://play.google.com/store/apps/details?id=com.jiyanshi.tictactoe
​I would like to receive your quote, estimated timeline, and a breakdown of the deliverables you can offer. Please share the details based on the requirements below:
​1. Core Features (Base Package)
​Clean, responsive UI/UX for both mobile phones and tablets.
​Smooth single-player modes with dynamic AI difficulty levels (Easy, Medium, Hard).
​Local pass-and-play / 2-player offline mode.
​Sound effects, haptic feedback, and lightweight animations.
​Offline gameplay capability without network dependency.
​2. Advanced & Add-on Features
Please list what additional advanced features you can integrate and their respective cost impact, such as:
​Online multiplayer matchmaking or private room creation.
​Ad network integration (AdMob / Meta Bidding: Banner, Interstitial, Native, and Rewarded ads).
​In-App Purchases (IAP) for ad removal, custom skins, themes, and board customizations.
​Google Play Games integration (Achievements and Global Leaderboards).
​Analytics and crash reporting (Firebase / Crashlytics).
​3. What I Need in Your Proposal
​Total Estimated Budget: A milestone-based cost breakdown.
​Timeline: Estimated delivery time from development to final APK/AAB build.
​Tech Stack: Preferred framework (Flutter, Unity, Native, etc.).
​Portfolio: Links to similar mobile games you have successfully built and deployed.
​Looking forward to your response and proposal so we can discuss the next steps.