Your Thoughts, Decoupled and Refracted.
A private, AI-augmented journaling companion with 100% on-device inference. Reflect on your day with an AI that listens, learns, and prompts — all while your data stays on your phone.
Defrag
Built for what actually goes wrong
Privacy concerns with cloud-based journaling AI that reads your most personal and sensitive thoughts.
All AI inference (Gemma / Kokoro) stays on-device — no text is ever sent to a server for processing.
Robotic, inconsistent voice quality in mobile apps that vary across different hardware vendors.
Sherpa-onnx + Kokoro Studio Voice provides a brand-consistent, neural-quality voice experience on every device.
What ships in the box
Editor AI Companion
A reflective writing partner that provides real-time questions, observations, and expansion prompts using on-device Gemma 4 models.
Studio Voice Architecture
Vendor-independent, brand-consistent neural voice powered by Sherpa-onnx, ensuring the same high-quality audio on Samsung, Pixel, and iOS.
Secure-by-Design Data
Encrypted SQLCipher storage and biometric authentication with cross-platform BlobFormat backups for secure Android and iOS portability.
Built on enterprise-grade infrastructure
Not a single journal entry ever leaves the device. Inference runs on the phone's NPU (Snapdragon 8 Gen 3+, Apple Silicon, Pixel Tensor). Storage is encrypted SQLCipher unlocked only by biometric, and backups are encrypted BlobFormat the user controls. No third-party model can train on what you write.
Cloudflare global edge — innate DDoS protection, zero cold-starts.
Clerk (SOC 2 Type II, GDPR) for multi-tenant fleets; PBKDF2 for single-tenant apps.
Cloudflare & Resend (SOC 2 Type II) · Stripe (PCI-DSS Level 1).
From foundation to fleet scale
- Phase 1Shipped
Foundation — Reflection Engine
- Biometric-locked editor with local SQLCipher persistence.
- Basic on-device Gemma integration for simple reflective prompts.
- Brand-consistent dark theme and Material 3 UI.
- Phase 2In progress
Companion & Voice — Interactivity
- Real-time AI suggestion panel with JSON-protocol parsing.
- Pulse-indicator voice conversation screen with interrupt support.
- Localized prompts and safety-heuristic pre-flight.
- Phase 3Next
Studio Voice & iOS — The Future
- Sherpa-onnx + Kokoro 82M "Studio Voice" download integration.
- Full iOS portability spec implementation via KMP and SwiftUI.
- Gemma 4 hardening with ShieldGemma 2 on-device safety.
Ready to bring Defrag into your stack?
Talk to our team about deployment, custom SLAs, and integration with your existing identity and observability stack.