OpenCone
On-Device RAG with Pinecone
About
This app transforms your iPhone or iPad into a powerful RAG system. It allows you to import various document types for on-device extraction, embedding, and semantic search. Connect to your OpenAI and Pinecone accounts to build a private knowledge base for real-time, citation-backed answers.
What's New in OpenCone
3
June 20, 2026
This update introduces critical security enhancements, major performance optimizations for document management, and full compatibility with the latest reasoning models. Performance & UI Optimizations: - Instant Document Deletion: Upgraded vector deletion logic to use batching. Removing documents from your index is now up to 10x faster. - Optimistic UI Updates: Deletion of indexes and namespaces now updates instantly in the UI for a much snappier experience. - Namespace Management: Added a new Namespace deletion option directly in the Documents tab so you can wipe custom namespaces cleanly. - Background Syncing: Index lists now sync seamlessly in the background across views. Security & Architecture: - Secure API Key Storage: API keys are now stored exclusively in the system Keychain via a secure settings store, replacing process environment variables. - UserDefaults Hardening: Wiped legacy plain-text API credentials from unencrypted UserDefaults storage. - Reasoning Model Support: Updated API parameters to fully align with latest OpenAI models, including native reasoning effort configuration and completion token limits. Stability & Bug Fixes: - Migrated navigation toolbars to cross-platform SwiftUI layouts to improve UI stability. - Resolved background streaming task retention warnings. - Expanded unit test coverage across all core services for improved reliability.
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FAQ
What file types can OpenCone import?
OpenCone supports a wide range of file types including PDFs, Word documents (DOCX), plain text (TXT), HTML, Markdown, JSON, CSV, and various code formats. It also utilizes Apple Vision OCR for text recognition within images.
How does OpenCone ensure privacy and security?
All credentials are stored securely in the Keychain using SecureSettingsStore. Release guardrails are in place to prevent accidental key leaks, and a reset control allows users to wipe credentials and history without reinstalling the app.
Can I use OpenCone offline?
While the core processing and search happen on-device, OpenCone requires access to your OpenAI and Pinecone credentials to function. Therefore, an internet connection is necessary to interact with these services for embedding and reasoning.
What are the supported AI models in OpenCone?
OpenCone supports standard models like GPT-4o and GPT-4o mini, as well as the advanced GPT-5 model. Users can dynamically control reasoning effort for GPT-5 and temperature/top-p settings for other models.
How does OpenCone handle large documents or datasets?
The app features MIME-aware chunking with configurable size and overlap to manage large documents effectively. Deduplication by path, size, and timestamp fingerprinting also helps in managing data efficiently.
What is the update frequency for OpenCone?
OpenCone was last updated on January 19, 2026, indicating active development. The latest version is 2.2.
Does OpenCone have ads?
No, OpenCone is ad-free. It is a free application with no advertisements present.
What is the user sentiment for OpenCone based on ratings?
OpenCone has a perfect rating of 5.0 stars from 1 rating, suggesting very positive initial user feedback.
