How to vibe codeReeder

Prerequisites

• macOS & XcodeFree

  Required for compiling and running native SwiftUI applications for macOS and iOS

• Apple Developer Account$99/yr

  Required for configuring CloudKit containers and provisioning push notifications or device sync

• CursorFree tier / $20/mo Pro

  AI-assisted Swift editor for iterating on SwiftUI views and data models

AI coding tools

• Cursor

  Best code editor for prompting and editing native Swift/SwiftUI multi-file architectures

• Claude Code

  Terminal agent capable of running local builds, managing git, and debugging Swift compiler errors

Build guide

1. 01Project Scaffolding & Core Data Models

   Initialize a multiplatform SwiftUI project structure for macOS and iOS using SwiftData for local persistence.

   Create a new multiplatform SwiftUI project structure targeting macOS 14+ and iOS 17+. Set up SwiftData models for Feed, Article, MediaItem, and TimelinePosition. Define fields for item ID, title, URL, contentSnippet, publishedDate, mediaType (rss, youtube, podcast, link), readStatus, and continuousScrollOffset. Ensure models support CloudKit synchronization containers out of the box. Implement a clean MVVM or observable architecture where view models query SwiftData stores efficiently with predicate filtering for tags and sources.

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2. 02Feed Parser & On-Demand Fetching Engine

   Implement robust XML/JSON parsing for RSS, Atom, and JSON feeds using Swift concurrency.

   Implement an asynchronous FeedParser service in Swift using URLSession and XMLParser (or SwiftSoup/FeedKit equivalent if allowed via SPM). The parser must gracefully handle malformed RSS 2.0 and Atom feeds, extract enclosures (podcasts, YouTube video links), sanitize HTML content strings, and handle network timeouts or HTTP error codes. Write background task triggers that periodically fetch new items for subscribed feeds, updating SwiftData asynchronously without blocking the main thread UI.

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3. 03Unified Timeline UI & Smooth Scrolling

   Build a responsive native timeline list supporting variable media types, thumbnails, and scroll position tracking.

   Build a high-performance SwiftUI unified timeline view using LazyVStack or List optimized for both macOS sidebar navigation and iOS compact/split views. Each row must dynamically render content based on media type (article excerpt, YouTube thumbnail preview, podcast play button). Implement continuous scroll-position tracking that records the exact visible item ID and fractional offset, persisting it locally and queuing it for CloudKit sync on scroll deceleration.

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4. 04CloudKit Scroll Position & Metadata Sync

   Configure CloudKit record zones to synchronize timeline position, starred items, and subscriptions across devices.

   Integrate CloudKit container syncing for user metadata. Synchronize feed subscriptions, tag mappings, favorites, and most importantly, the latest continuous scroll position markers across devices. Implement conflict resolution logic favoring the most recent timestamp to prevent sync loops when switching rapidly between an iPhone and Mac. Handle network disconnects gracefully with local queueing and automatic retries.

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5. 05Share Extension & External Link Capture

   Create a native share extension enabling users to send links from Safari and other apps directly into the reader.

   Add an iOS and macOS Share Extension target to the project. The extension UI must allow users to select tags or folders, extract URLs and page titles from sharing context, and save them into the shared SwiftData container or push them directly to CloudKit so they appear instantly in the app's 'Links' timeline. Ensure app group containers are properly configured for data sharing between the main app and extension.

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6. 06Shared JSON Feeds & Edge Export

   Build a lightweight Cloudflare Worker endpoint to export public tag collections as JSON feeds.

   Create a Cloudflare Worker project using TypeScript and Workers KV or D1 to handle public shared feeds. Implement an endpoint structure (/feed/[tagId]) that accepts exported tag structures from the client app and renders them as standard JSON Feeds (jsonfeed.org format) with proper CORS headers and caching rules. Write documentation and testing scripts to verify that external RSS readers can ingest these generated endpoints.

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Cost vs paying for Reeder