FeelCalc 作者： Unelma Platforms

FeelCalc is a browser extension that tracks your browsing behavior and calculates a real-time Feel Score (0–100) representing internet anxiety.

Core Features:
- Feel Score Engine — weighted heuristic model combining content type, scroll speed variance, tab switching frequency, and session length
- Floating Indicator — color-coded circle on every page (green → yellow → orange → red)
- Popup Dashboard — live score, trend chart, contributing factors, and score breakdown
- Anxiety Heatmap — highlights stress-triggering headlines on news and social media sites
- Smart Interventions — guided 30-second box breathing exercise when anxiety is elevated
- Grayscale Mode — desaturates the page to reduce dopamine-driven scrolling
- Sentiment Journal — privacy-first emotional tracking over time
- Social Media Detection — enhanced scoring for doomscrolling on Twitter/X, Facebook, Instagram, Reddit, TikTok
- Content Scanning — detects negative keyword density on social media feeds
- Late-Night Awareness — increased scoring for negative browsing after midnight

Privacy First:
All data stays in your browser using local storage. No external servers, no analytics, no tracking. URLs are sanitized — only domain and path are stored, never query parameters. Journal entries store scores and categories only, never personal data.