FAQ
Does BrainShield replace Perplexity?
No. Perplexity is a research tool. BrainShield is a cognitive wellness tool. Use Perplexity to find answers faster, use BrainShield to make sure that speed isn't silently burning out your brain through information overload.
Can AI search tools cause cognitive fatigue?
Yes. When answers are instant, you ask more questions and process more information per session. This creates a throughput problem — your brain can't synthesize information as fast as AI delivers it. Researchers have documented this as AI-induced cognitive overload.
How does BrainShield track Perplexity usage?
BrainShield runs as a Chrome extension and automatically detects when you're using Perplexity and 165+ other AI tools. It tracks session duration, context switches between tools, and overall cognitive load patterns passively — zero manual input required.
Does BrainShield have a free plan?
Yes. Free shows you the score — real-time wellness scoring across 165+ AI tools and basic break reminders. Wellness ($12/mo) adds tool breakdowns, trends, and 30-day history. Balance ($19/mo) adds AI-powered insights, productivity scoring, and data export.