DeepWriter

Pioneer in transformer-based mobile writing (2022) - Legacy Project

🏛️ Groundbreaking Achievement: One of the first iOS apps with transformer models trained from scratch on carefully curated datasets. Full GPT-style architecture running locally on mobile devices!

DeepWriter represented a massive leap from our Markov chain-based Creative Writer. This was one of the first implementations of transformer architecture on iOS, featuring models trained entirely from scratch on meticulously curated datasets spanning literature, technical writing, poetry, and contemporary prose.

🔐 Privacy-First Architecture

All transformer inference happened on-device using CoreML optimization. No internet required, no data ever left the device - a revolutionary approach when cloud-based AI was the norm.

The app featured custom-trained transformer models optimized for different writing styles, with automatic model updates delivered via Amazon S3. Each model was carefully trained on domain-specific corpora to ensure high-quality, contextually appropriate suggestions.

🔒 Privacy Policy 📚 Technical Theory 💳 Subscription Info

🚀 Technical Stack (2022)
Custom Transformer Models • CoreML 5 • PyTorch → ONNX → CoreML Pipeline • S3 Model Delivery
Note: This app was discontinued in 2023 due to the rapid evolution of cloud-based LLMs

Revolutionary Transformer Technology

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Custom Transformer Architecture

Full transformer models trained from scratch, not fine-tuned. Each model carefully architected for specific writing domains.

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Curated Training Data

Meticulously curated datasets from quality sources - no web scraping. Every text manually vetted for quality and appropriateness.

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CoreML Optimization

PyTorch → ONNX → CoreML conversion pipeline with custom optimizations for Apple Neural Engine acceleration.

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Zero-Knowledge Architecture

Complete on-device processing. No telemetry, no analytics, no data collection. True privacy in the age of surveillance capitalism.

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Multi-Model System

Different transformer models for poetry, technical writing, creative prose, and business communication - all swappable in real-time.

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Mobile-First Design

Models specifically designed for mobile constraints - 50M parameters optimized to run smoothly on A12 Bionic and newer.

Advanced Technology Stack

🤖 GPT Architecture 📱 CoreML 🔧 PyTorch ☁️ AWS S3 🎨 SwiftUI

DeepWriter represents a breakthrough in mobile AI - the first iOS app to successfully implement full GPT model inference on-device, ensuring both powerful AI assistance and complete user privacy.