Cortis

CortisYour Private, Offline AI Assistant for iPhone

Cortis is an innovative offline AI assistant designed exclusively for iPhone, operating entirely without an internet connection. It answers questions, provides explanations, and retrieves information on-device, making it ideal for situations like camping, flights, or travel where connectivity is scarce. This approach ensures user privacy by keeping all data local, never relying on cloud servers. Product Hunt community members can currently request free premium access codes.

freemium
offline AIiPhone appprivacy protectionlocal LLMpersonal assistantno internetProduct Hunton-device AI
Indexed
Updated
3.1 (0 Number of reviews)

Log in to rate the project

Try Now

Cortis tackles a genuinely practical problem: what happens to your AI assistant when your iPhone loses its internet connection? Most AI tools today are heavily reliant on cloud infrastructure, making them useless without a signal. Cortis, however, flips this script by running its entire operation locally on your device, no network required. This is a significant boon for anyone who frequently finds themselves off-grid—think campers, long-haul flyers, or travelers exploring remote areas.

Smart, Even When Disconnected

At its core, Cortis integrates a lightweight language model directly onto your iPhone. This allows it to process your queries and generate responses right there, on the device, much like you'd expect from a cloud-based AI. The key difference is that none of your data ever leaves your phone, offering a robust layer of privacy by design. It's a pragmatic move that prioritizes user control over data.

The use cases are pretty clear-cut. Imagine you're deep in the wilderness, camping under a clear sky, and you want to identify constellations without cell service. Or perhaps you're mid-flight, needing a quick fact-check for work, but Wi-Fi is either unavailable or too expensive. Cortis steps in, providing instant answers without needing a SIM card or a Wi-Fi hotspot. It's about bringing AI utility to environments where it's traditionally been absent.

Streamlined Interaction, Zero Latency

  • Simply open the app and type or speak your question.
  • Responses are delivered in a conversational format, supporting follow-up queries.
  • Operates completely offline, ensuring immediate, lag-free interactions.

From a user experience perspective, Cortis keeps things refreshingly simple. The interface is clean, devoid of unnecessary bells and whistles, focusing squarely on the 'ask-and-answer' loop. Think of it as a more intelligent, offline version of Siri. Because the language model resides on your device, response times are notably faster than waiting for data to travel to and from a cloud server. Plus, there are no recurring monthly fees or data charges to worry about, which is always a welcome bonus.

An Early Look for the Curious

The developers have been distributing free premium access codes via Product Hunt, framing it as a thank you to the community. This suggests Cortis is likely in its earlier stages of development, but the foundational features are clearly robust enough for public use. It's a nice gesture for early adopters and those genuinely interested in the potential of on-device AI.

It's important to manage expectations, though. An offline model, by its nature, won't match the sheer power, complex reasoning capabilities, or up-to-the-minute knowledge of giants like GPT-4 or Claude. Cortis is better suited for general knowledge queries, explanations, and common information retrieval. Also, for now, it's an iPhone-exclusive, leaving Android users waiting in the wings.

Ultimately, Cortis feels like a tool built with a specific purpose in mind: to fill a critical gap in scenarios where connectivity is a luxury, not a given. If you frequently find yourself in no-network zones, or if privacy is a paramount concern, this app definitely warrants a closer look.

Pros & Cons

Pros

  • Operates entirely offline, no internet required
  • Ensures privacy by keeping all data on-device
  • Fast response times due to local processing
  • Designed for practical use in no-signal environments

Cons

  • Model capabilities are more limited than cloud-based LLMs
  • Currently exclusive to iPhone users
  • Premium features require applying for a redemption code, which can be a barrier
  • Potential for incomplete or limited non-English language support

Frequently Asked Questions

Is Cortis completely free to use?

The basic version of Cortis is available for free. Premium features, however, require a redemption code provided by the developer. Currently, members of the Product Hunt community can apply to receive these codes for advanced access.

Does Cortis support languages other than English?

While the description doesn't explicitly detail language support, Cortis appears to be primarily aimed at English-speaking users at present. Support for other languages, including Chinese, might be limited or could be introduced in future updates.

How does Cortis differ from Apple's Siri?

Siri typically requires an internet connection and has more limited capabilities. Cortis, in contrast, operates entirely offline and leverages a large language model, enabling it to handle more complex questions and provide detailed explanations without network dependency.

Will the offline model consume a lot of storage space on my iPhone?

The integrated language model will indeed occupy some storage on your device. The exact size hasn't been disclosed, but smaller models usually range from a few hundred megabytes to several gigabytes. It's advisable to ensure you have sufficient free space.

Explore More

Similar Tools

ChappieAI

ChappieAI isn't just another chatbot; it's an AI agent designed to actively operate within your macOS system. It remembers context across sessions, manages local files, executes terminal commands, and even handles Git commits and pushes. Users can bring their own API keys (OpenAI, Gemini, etc.) or run local models like Llama completely offline. This deep dive explores how ChappieAI moves AI beyond mere conversation.

MindVoice

MindVoice

MindVoice is a mobile voice recording tool designed to capture your thoughts instantly. It leverages AI to automatically categorize these ideas into actionable to-do lists for shopping, work, health, and more. Unfinished tasks seamlessly roll over to the next day. The free version offers on-device transcription, ensuring your audio never leaves your device, balancing efficiency with robust privacy.

Memanto

Memanto

Memanto equips AI agents with long-term memory, leveraging built-in RAG and semantic search to maintain context across sessions. It eliminates the need for vector database management, supports serverless or on-premises deployment, and integrates with over 10 tools like Claude Code and Cursor, balancing cost and privacy concerns.

Neuralancer

Neuralancer

Neuralancer positions itself as a personal AGI assistant, emphasizing complete user ownership and data privacy. It aims to deliver a highly personalized and intelligent interaction experience, ideal for users prioritizing efficiency and confidentiality. Currently in early development, its progress is worth watching for those seeking a truly private AI companion.

Dirac

Dirac

Dirac is an AI-native email management tool designed to cut through inbox clutter. It automatically scans email threads, drafts replies, and generates concise summaries, presenting only the critical decisions you need to make. By silently handling up to 80% of non-essential emails, Dirac aims to save busy professionals hours daily, allowing them to focus on what truly matters. It's ideal for founders, executives, and anyone overwhelmed by their inbox.

Memory Butler

Memory Butler is an AI assistant designed for persistent memory, remembering user preferences, conversation history, and key details across sessions. It aims to eliminate the need for constant re-explanation, offering a truly personalized and continuous interaction experience. Ideal for creators, developers, and professionals seeking a smarter, less forgetful AI companion.

Open-source Alternatives

ODS: Turn Your PC into a Local AI Server

ODS is an open-source project designed to transform your PC, Mac, or Linux device into a fully functional AI server. It integrates LLM inference, conversational UI, voice interaction, AI agents, workflows, RAG, and image generation. This makes it ideal for developers and advanced users who want to run a comprehensive suite of AI capabilities locally, prioritizing privacy and control over their data.

basic-memory: Give Your AI Long-Term Memory

Basic Memory is an open-source Python tool designed to inject persistent memory into AI conversations. It eliminates the need for users to repeatedly explain project backgrounds by leveraging a local knowledge graph and semantic caching. This allows AI assistants like ChatGPT and Claude to retain crucial context across sessions, making it particularly valuable for developers and heavy AI users seeking consistent, context-aware interactions.

Airunner: Offline Multi-Modal AI Engine for Local Inference

Airunner is an open-source offline AI inference engine that lets you run image generation, real-time voice conversations, LLM chatbots, and automated workflows entirely on your local machine. No internet required, no data leaves your computer. Perfect for privacy-conscious users and developers who want full control over their AI tools without cloud dependencies.

lotti: Open-Source Private Journal with Local AI

lotti is an open-source private journaling app featuring a built-in, locally-run AI agent. It’s designed to record your activities, thoughts, and tasks over time, offering proactive suggestions based on your entries. All data processing happens on your device, and synchronization across devices is end-to-end encrypted via the Matrix protocol, ensuring robust privacy. It's ideal for users who prioritize data privacy and seek AI assistance for personal management.

rowboat: Your Open-Source AI Colleague with Memory

rowboat is an open-source AI assistant designed with a core feature: persistent memory. It remembers your preferences, project context, and conversation history, making AI collaboration more continuous and personalized. Ideal for teams or individuals seeking self-hosted solutions with full data control. This article dives into its design, use cases, and setup tips.

local-deep-research: Private AI Research, On Your Terms

local-deep-research is an open-source tool for deep research, supporting local and cloud LLMs (like LLaMA, Ollama, Google) and integrating over 10 search engines including arXiv and PubMed. All data is locally encrypted, ensuring privacy. It achieves around 95% accuracy on SimpleQA (with Qwen3.6-27B on an RTX 3090), making it ideal for researchers and privacy-conscious users.