Anxin Learn v2.0 Release Notes

Dear Parents,

Welcome to v2.0! We have thoroughly re-architected your child’s learning and media experience. This milestone release brings scientific scheduling with robust anti-addiction controls, our powerhouse Bilibili learning engine, dedicated multi-child family profiles, smart video bundle aggregation, seamless cloud drive sync, and ultra-fast near-field device transfers.

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I. 🌟 Major Features: Effortless, Structured Learning & Care

1. Scientific Scheduling & Screen Time Controls (Major Upgrade)

• Daily Serialized Learning Schedule: Prevent binge-watching! The system automatically dispenses serialized lessons at a healthy rhythm of "1 unlocked episode per weekday", establishing steady learning habits.
• Category-Based Time Allocations: Cap daily screen time for specific categories independently (e.g., limit cartoons to 30 min/day while keeping science or languages open), encouraging well-rounded discovery.
• Brand New "Parent Challenge" Verification: Upgrades parental gates with smarter challenge prompts (Parent Challenge) to replace easily guessed math questions or simple PINs, keeping older kids securely out of admin settings.
• Weekend Zone & Weekend Time Extension: Segregate movies and feature-length documentaries into an exclusive "Weekend Zone" that stays hidden on weekdays and opens on Saturdays and Sundays with custom time allotments.
• Locked Weekend Time Policies: Hardens weekend zone time windows directly in the system core, preventing children from tampering with or bypassing schedules.
• Automated Saturday Morning Premieres: Feature films and long-form documentaries are pooled during the week and released systematically every Saturday morning.
• Graceful +15 Min Extension: One-tap approval to grant an extra 15 minutes during key lesson climaxes, featuring an elegant countdown overlay that preserves bedtime routines.
• Topic-Level Auto Lock: Topics lock automatically the instant their daily quota is reached, blocking accidental overuse.
• Extended Duration Tiers: Adds 6-hour and 8-hour total daily time presets, alongside dedicated wish-list duration controls.

2. Deep Bilibili Integration & Auto-Sync (🌟 Killer Feature)

• One-Click Comprehensive Parser (No More Single-URL Copying):

• Series & Collections in One Go: Paste a single collection link to parse dozens or hundreds of episodes neatly in seconds;

• Storylines & Creator Spaces: Full compatibility with creator story arcs and complete space video catalogues;

• Cross-Creator Collaborations: Consolidate multi-part "../../en"lectures hosted across multiple educators into a single structured course bundle.

• **Favorites Folder Import via fid**: Share any Bilibili favorites folder; the engine extracts the fid and imports the full roster into your private family library.

• Smart Auto-Sync for New Episodes: When an educator posts a new lecture, our background difference-engine pulls the latest episode automatically into the course bundle without manual intervention.

• Pure, Distraction-Free Playback:

• Stripped of Comments, Danmaku & Algorithmic Feeds: Eliminates related video sidebars, distracting comments, flying danmaku, and gaming promotions;

• Default Accelerated Media Pipeline: Built-in accelerated playback pipeline delivers instant video launches without buffering delays.

• Proactive Invalidation Warnings: Instantly flags deleted, unlisted, or expired videos with clear indicators, making it easy to swap in alternatives.

3. Dedicated Multi-Child Family Management

• Instant Child Profile Switching: Tailored for multi-child households. Manage multiple child profiles on a single phone or tablet and switch in a split second.
• Completely Isolated Histories & Progress: Viewing histories, daily records, favorites, and course queues remain entirely sandboxed between children—no more cross-contamination of lesson progress.
• Independent Multi-Device Sessions: Run the living room TV, study tablet, and parent's phone simultaneously under independent child profiles without session conflicts.
• Rock-Solid Family Account Architecture: Refactored account binding and unbinding guarantees zero state leakage or profile loss during rapid switching.

4. VideoBundle Smart Collection Management

• Unified Series Bundling: Groups related episodes, course packs, and story seasons into compact bundle cards to eliminate dashboard clutter.
• Horizontal Swipe Episode Picker: Swipe left and right directly on the bundle card to browse and switch episodes without diving into nested sub-pages.

5. Baidu Netdisk Import & Sync

• Incremental Sync via Source Lineage: Automatically scans your cloud folders for newly added episodes, importing only the delta to eliminate duplicate work.
• DeepScan Directory Penetration: Automatically navigates deeply nested folder hierarchies to capture and index buried media files.
• Clear "Already Added" Status Badges: Netdisk folders and files show clear visual badges if already imported, avoiding accidental duplicate imports.
• Automatic Title Sanitization: Strips file extensions, download links, hashes, and unwanted special characters to produce clean, legible lesson names.
• Smooth Thumbnail Fetching: Throttles remote thumbnail downloads with a dedicated concurrency limit (up to 20 concurrent tasks) and clear progress spinners.
• Multi-Account Switching & Label Clarity: Switch cleanly between different Netdisk accounts without truncation of long account IDs.

6. Audio Immersion & Vinyl Turntable Player

• Authentic Vinyl Skeuomorphic Player: Features a spinning vinyl turntable interface for both kids and parents, adding analog warmth to listening time.
• Background & Lock Screen Playback: Keeps language listening, audiobooks, and children's stories playing smoothly while the screen is locked or the app is minimized.
• Local & Remote Audio Albums: Imports local sound files and external sources into structured, easily browsed audio albums.

7. Course Pack Sharing & Face-to-Face Instant Sync

• Instant Course Pack Cards: Turns customized course structures into shareable cards and QR codes for effortless parent-to-parent recommendations.
• Face-to-Face Device Beam: Curate lessons on your phone during your daily commute, then beam them directly to your child's tablet offline when you get home.
• Rich Web Landing Pages: Shared links open in modern web landing previews for recipients who have not yet installed the app.
• Strict Same-Family Isolation: Syncing is restricted strictly to authenticated matching family account windows to prevent cross-account pollution.
• Specialized Cards for Classical Poetry: Dedicated card designs for rhythmic recitations and classical poetry collections.

8. Referral Program & Growth Rewards (All-New)

• Invite Friends, Earn Rewards: Introducing our built-in Referral Program. Generate your personal invite card and share quality curation with your parent network.
• Instant 7-Day Free VIP Trial: Friends joining via your invite link receive a full 7-day VIP trial immediately.
• Refreshed VIP Hub: Upgraded subscription hub with transparent multi-channel payment statuses and simplified troubleshooting.

9. Cloud Hardening & Complete Backup

• Full Schedule & Lesson Restoration: Back up and restore everything—settings, watch logs, course libraries, and daily scheduling progression—with zero data loss.
• Edge Cloud Security Migration: Core authentication and services run on hardened edge infrastructure with sandboxed runtimes to safeguard family privacy.

10. Format Compatibility & Android Direct APK

• Expanded Codec Support: Broadened media engine decodes a wider spectrum of audio and video formats, eliminating unplayable files or black screens.
• Direct Official Android APK Links: Download the latest official Android APK installer directly for seamless updates.

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II. 💡 UX Polish & Child-Friendly Details

1. Streamlined Library Organization

• Batch Select & Delete: Manage your catalog faster with multi-select and one-tap bulk removal.
• Drag-and-Drop Category Reordering: Long-press and drag subject tags to position your child's favorites at the top.
• Inline Category Creation: Add a missing subject tag right inside the selector sheet without losing your place.
• Accurate Episode Picker Highlighting: Opening an episode sheet automatically scrolls to and highlights the currently playing track.
• Continuous Auto-Play Option: Toggle uninterrupted auto-play across related episodes within the same title.
• Cascading Selection in Nested Trees: Resolves multi-tier selection issues, allowing bulk selection of subcategories even when the parent category is empty.
• Recent Category Memory: Suggests recently used categories automatically when importing new materials.
• Long Title Formatting: Eliminates awkward title truncations, keeping long course names readable across all screen sizes.
• Curated Cover Art Selection: Restricts custom thumbnail changes to high-quality video frames for clean presentation.

2. Playful Visuals, Sound & Typography

• Large Text Mode: High-contrast, larger typography allows younger children to navigate comfortably from a distance.
• Magnetic Snap Scrolling: Carousel cards glide smoothly and snap magnetically into center alignment.
• Toy-Like Haptic Audio Feedback: Playful tactile audio cues accompany every tap, offering delightful sensory feedback.
• Unified Design System: Cohesive sheets, rounded pop-up menus, tag palettes, and iconography across both parent and child interfaces.

3. Frictionless Onboarding

• Local Biometric Passwordless Sign-In: Authenticate instantly via on-device biometrics without retyping long usernames and passwords.
• No More Math Gates for Imports: Removed unnecessary math challenges during video imports, streamlining lesson organization.
• Contextual QR & Import Wizards: Step-by-step inline guides assist with single links, collection IDs, creator spaces, and cloud drives.
• Clipboard Distraction Filter: Suppresses irrelevant clipboard prompts when entering the app.
• Human-Readable Error Messages: Replaces obscure system error codes with actionable guidance for authentication and network hiccups.

4. Pure & Safe Child Experience

• Unmissable Full-Screen "Out of Energy" Alerts: Break reminders and lock screens overlay above all video layers, ensuring playtime limits cannot be covered up.
• Simplified Child Home Screen: Strips away confusing search and sorting buttons, keeping younger kids from getting lost in nested menus.

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III. 🐛 Bug Fixes & Stability

1. Parental Controls & Anti-Bypass Hardening

• Fixed a vulnerability on iOS/iPadOS where PiP (Picture-in-Picture) gestures or backgrounding could circumvent break screens.
• Fixed text truncation and layout alignment bugs in the Parent Challenge dialog under English localization.
• Fixed layering bugs where full-screen video frames could occlude time-out notifications.
• Fixed unexpected desktop crashes triggered by system back gestures on secondary pages.
• Resolved modal conflicts when granting multiple back-to-back time extensions.

2. Sync, Sharing & Import Reliability

• Fixed an edge-case crash when unbinding state during rapid multi-account switching.
• Fixed a blank-screen exception when launching shared Deep Links directly via the native system camera while logged out.
• Fixed a recursion bug where nested collection imports caused titles to repeat endlessly like nesting dolls.
• Fixed an incremental sync bug in Baidu Netdisk where split multi-part "../../en"files missed new episodes.
• Optimized face-to-face transfer chunking to prevent socket timeouts during bulk transfers.
• Fixed an issue where the inline URL analysis helper failed to refresh upon editing pasted links.

3. Playback & Audio Engine Tuning

• Fixed turntable hang-ups when toggling full-screen mode on the vinyl player.
• Resolved IPv6 network blackouts that caused Bilibili short URLs to hang indefinitely on certain broadband providers.
• Fixed black-screen playback errors on select Netdisk 480p videos encoded in legacy FLV wrappers.
• Corrected audio filter equalization parameters that caused muffled vocals on select audio pipelines.
• Re-timed full-screen playback control bar fade-out and auto-hide animations.

4. Data Statistics & Clock Calculations

• Resolved a timing rollover bug where continuous playback across the midnight 24:00 boundary miscalculated daily hours and punch-in cards.
• Fixed an intermittent bug where child profile avatars and nicknames disappeared during account switching.
• Fixed a pie-chart rendering crash on large libraries and set a minimum visual threshold for short sessions.

5. Performance & Storage Hygiene

• Sub-200ms Cold Start: Re-architected initialization and serialization routines to bring app launch latency under 200ms.
• Storage Guard & Image Eviction: Implemented an automated LRU cache eviction policy for local images, preventing storage bloat.
• Jank-Free 60fps Lists: Virtualized long lists to eliminate frame drops during rapid scrolling on older hardware.
• Polished layout details, including wish-list typography overflow and home screen sub-pixel icon alignment.