atrophy vs Silvia AI

Atrophy is a short diagnostic that measures how much of your judgment you've handed to LLMs. It runs entirely offline. No accounts, no servers, no analytics, no third-party SDKs. Everything stays on your device. WHAT IT DOES - A focused calibration quiz: spot AI slop, verify weak claims, explain back what you read, gauge confidence. - A calibration score with a plain-language reading of where you're solid and where you're drifting. - A shareable result card you can save to Photos. WHAT IT DOESN'T DO - No tracking. No advertising IDs. No ATT prompt — there's nothing to track. - No content rented from a server. The drills ship in the app. - No social graph, no leaderboard, no streaks. ATROPHY PRO (Optional Subscription) Unlocks the Practice Pack — additional drills for ongoing calibration. - Monthly: $4.99 / month - Annual: $49.99 / year Subscriptions auto-renew until canceled. Cancel anytime in your Apple ID settings (Settings → Apple ID → Subscriptions). Account is charged for renewal within 24 hours prior to the end of the current period. Payment is charged to your Apple ID account at confirmation of purchase. Privacy policy: https://atrophy-ai.github.io/privacy.html Terms of use: https://atrophy-ai.github.io/terms.html

Silvia AI is a polished, multi-model AI chat studio designed for everyday ideas, writing, coding, research, and creative work. SMART MODEL ROUTING Use Auto mode and Silvia selects the right Gemini model for each request, or choose a model yourself for more control. CHAT, WRITE, AND REASON Ask questions, brainstorm ideas, draft content, explain code, and work through complex topics with clear, formatted responses. FILES AND IMAGES Attach photos and supported documents for analysis. Generate creative images from text prompts and save results to your photo library. VOICE INPUT Speak your prompt when you prefer hands-free input. POLISHED CHAT HISTORY Create multiple conversations, revisit recent chats, copy answers, regenerate responses, and clear history whenever you choose. Guest conversations stay on the device; signing in enables account-based chat sync. Silvia AI requires an internet connection for AI responses. AI output may be inaccurate, so verify important information.