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Kai

Fast, Simple Open-Source AI Chat
Need quick AI answers without the bloat? Kai is your lightning-fast, open-source companion, powered by models like Llama and Google's Gemini. Dive into seamless chats for brainstorming, writing, summarizing, learning, or casual talks – all in a minimalist interface that loads in seconds.

Supported AI Services
• Ollama: Connect to your self-hosted local AI models for privacy-focused chats
• Gemini: Google's advanced AI with built-in file attachment support
• xAI: Access innovative Grok models for creative and insightful responses
• Groq: Experience ultra-fast AI inference for quick replies
• Mistral AI: Utilize the free tier for cost-effective AI interactions

Key Features
• Encrypted Local Storage: Securely store your chat history on your device with end-to-end encryption
• Text-to-Speech: Hear AI responses aloud with natural-sounding voice output
• File Attachments: Easily upload files to enhance your conversations (supported on Gemini)
• Seamless Service Switching: Switch between AI providers effortlessly mid-conversation
• Multi-Turn Conversations: Enjoy context-aware chats where AI remembers previous messages
• Simple Chat Interface: User-friendly design for beginners and experts alike

AI Tools (Enable in Settings)
• Get Local Time: AI provides accurate current date and time info
• Get Location: Receive location-based responses using IP detection
• Send Notification: Get push notifications triggered by AI
• Create Calendar Event: Add events to your calendar straight from the chat

Privacy First
Kai prioritizes your privacy: All chat history is stored locally with strong encryption. When using cloud AI services, your data is sent directly to the providers for processing – no data collection by the app itself. Stay in control with this open-source AI chat app.
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Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.7.3 (52) suggested Added on Feb 23, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • Read calendar events and details
      This app can read all calendar events stored on your phone and share or save your calendar data.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read phone status and identity
      Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call.
    • add or modify calendar events and send email to guests without owners' knowledge
      This app can add, remove, or change calendar events on your phone. This app can send messages that may appear to come from calendar owners, or change events without notifying their owners.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • com.inspiredandroid.kai.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 4.5 MiB PGP Signature | Build Log

    • 1.7.0N1.7.0e1.7.0w1.7.0 1.7.0i1.7.0n1.7.0 1.7.0v1.7.0e1.7.0r1.7.0s1.7.0i1.7.0o1.7.0n1.7.0 1.7.0{1.7.0{1.7.0 1.7.0l1.7.0a1.7.0t1.7.0e1.7.0s1.7.0t1.7.0_1.7.0v1.7.0e1.7.0r1.7.0s1.7.0i1.7.0o1.7.0n1.7.0 1.7.0}1.7.0}1.7.0
    Add explore topics
    Fix openai compatible api
  • Version 1.7.0 (47) - Added on Feb 18, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • Read calendar events and details
      This app can read all calendar events stored on your phone and share or save your calendar data.
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read phone status and identity
      Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call.
    • read your text messages (SMS or MMS)
      This app can read all SMS (text) messages stored on your phone.
    • send and view SMS messages
      Allows the app to send SMS messages. This may result in unexpected charges. Malicious apps may cost you money by sending messages without your confirmation.
    • add or modify calendar events and send email to guests without owners' knowledge
      This app can add, remove, or change calendar events on your phone. This app can send messages that may appear to come from calendar owners, or change events without notifying their owners.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • com.inspiredandroid.kai.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 4.5 MiB PGP Signature | Build Log

    • 1.6.2N1.6.2e1.6.2w1.6.2 1.6.2i1.6.2n1.6.2 1.6.2v1.6.2e1.6.2r1.6.2s1.6.2i1.6.2o1.6.2n1.6.2 1.6.2{1.6.2{1.6.2 1.6.2l1.6.2a1.6.2t1.6.2e1.6.2s1.6.2t1.6.2_1.6.2v1.6.2e1.6.2r1.6.2s1.6.2i1.6.2o1.6.2n1.6.2 1.6.2}1.6.2}1.6.2
    Add additional tools support
    Add nvidia api support
    Upgrade sdks
  • Version 1.6.2 (46) - Added on Feb 13, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • Read calendar events and details
      This app can read all calendar events stored on your phone and share or save your calendar data.
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read phone status and identity
      Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call.
    • read your text messages (SMS or MMS)
      This app can read all SMS (text) messages stored on your phone.
    • send and view SMS messages
      Allows the app to send SMS messages. This may result in unexpected charges. Malicious apps may cost you money by sending messages without your confirmation.
    • add or modify calendar events and send email to guests without owners' knowledge
      This app can add, remove, or change calendar events on your phone. This app can send messages that may appear to come from calendar owners, or change events without notifying their owners.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • com.inspiredandroid.kai.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 4.4 MiB PGP Signature | Build Log

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