esper - Offline & Private AI

About this app

<p>esper - Offline & Private AI is your personal AI chat app—designed to keep your conversations private and powerful.</p>
<p>Run open-source models completely offline on your iPhone. With esper - Offline & Private AI, you can choose to keep your data on your device. No tracking.</p>
<p>Key Features of esper - Offline & Private AI:</p>
<p>– Run Offline<br />
Download top open-source models like Qwen, Gemma, and DeepSeek directly to your phone—fully functional even without internet or WiFi.</p>
<p>– Bring Your Own Key<br />
Prefer ChatGPT or Claude? Plug in your own API key and get instant access to premium models from their providers. Swap between models anytime, even within the same conversation.</p>
<p>– Multimodal Support<br />
Chat with models that support vision for images, PDFs, and other files.</p>
<p>– Local RAG knowledge bases<br />
Upload documents into organized collections that you can add to chats to provide extra context for models, all 100% private and offline.</p>
<p>– Local Image Generation<br />
Run stable diffusion directly on your device for unlimited image generations, with esper Pro.</p>
<p>– Web search<br />
Ground your requests with search results with any model, or use native web search from providers like Google, xAI, OpenRouter, and more.</p>
<p>– Shortcuts<br />
Send prompts and attachments to esper from shortcut workflows</p>
<p>– Branching Conversations<br />
Explore different chat paths and easily toggle between threads.</p>
<p>– Privacy-First<br />
No analytics, no log storage, no server necessary. esper - Offline & Private AI gives total user control to choose completely offline chats, or connect with their favourite online providers. The choice is yours.</p>
<p>– Custom GPTs & Model Swapping<br />
Build and edit your own GPTs. Switch models mid-conversation—from Gemini to Claude in a single chat.</p>
<p>– Customizable<br />
Adjust the interface to match your personal style. Take control of conversations with editing, deleting, or retrying messages.</p>
<p>– iCloud Sync<br />
Sync conversations across your devices with Pro.</p>
<p>– Go Pro<br />
Pro gives you unlimited model downloads, local image models, knowledge base access, iCloud Syncing, Kokoro voice model, and optional color themes and animations.</p>
<p>If you want an AI chat experience that’s powerful, flexible, and private, esper - Offline & Private AI is built for you.</p>