Subra AI: Private Spaces
Offline AI Stays On Device
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Your private AI workspace—built to work on your device.
Subra AI brings chat, voice, images, documents, personal knowledge, and focused workspaces together in one privacy-first app. Download the on-device AI model once, then use core AI features without sending private conversations and Vault content to a cloud AI provider.
CHAT, SPEAK, AND LISTEN
• Chat with an on-device AI assistant.
• Ask questions using text or images.
• Record voice messages and transcribe them on device.
• Listen to AI responses with an installed voice.
• Choose your response language and writing style.
• Keep separate conversations with local chat history.
FOCUSED SPACES
Organize different parts of your life without mixing their information. Create Spaces for study, trips, interview preparation, projects, research, language practice, creative work, events, career planning, and private health-record organization. Each Space has its own chats, instructions, context, and Vault scope. An included JavaScript Essentials for React Native learning Space is also available.
PRIVATE DOCUMENT VAULT
Add and organize PDFs, text or Markdown files, images, and audio recordings. Subra AI can extract and index supported text locally, transcribe audio on device, search relevant passages, answer questions using selected sources, and cite source files, PDF pages, or audio timestamps when available. Rename files and add your own context notes. Space files remain isolated from unrelated Spaces. When a Vault does not contain enough evidence, Subra AI tells you instead of presenting general knowledge as source-grounded.
PRIVATE HEALTH ORGANIZER
Capture supported health readings, review and correct detected values and units, and confirm before saving. Search and filter records by date, type, or note, then ask questions about records in the active Health Space. Subra AI is a personal record organizer—not a doctor, diagnostic service, or medication advisor. Consult a qualified healthcare professional for medical decisions.
MORE TOOLS
• AI Memory that you can view, edit, or reset.
• Chat import, export, and sharing.
• Local model download and storage controls.
• Light, dark, and system appearance.
• Image background removal.
• Optional compatible external AI provider.
• Privacy-aware support and diagnostic reports.
PRIVACY BY DESIGN
Local chats, personal Vault files, derived text, audio transcripts, and health records stay on your device unless you explicitly export or share them. Internet access may be required for model downloads, App Store purchases, support, published ready-made content, updates, and an external provider you configure.
SUBRA PLUS
The free version includes core features and one personal custom Space in each supported category. Subra Plus is available as monthly or annual auto-renewable subscriptions and includes:
• Unlimited personal custom Spaces in every category.
• Anonymous Chat Support.
• Priority WhatsApp support.
Payment is charged to your Apple Account when the purchase is confirmed. The subscription renews automatically unless cancelled before the end of the current billing period. Manage or cancel it in your Apple Account subscription settings. Cancellation prevents future renewal, while access normally continues through the paid period. Restore eligible purchases inside the app; no separate Subra AI account is required. Prices vary by country or region. Refunds follow Apple policies and applicable law.
Privacy Policy: https://subraatakumar.com/subra-ai/privacy-policy/
Terms of Use: https://subraatakumar.com/subra-ai/terms/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- subscriptions added
- Minor bug fixes on image capture
The developer, Subrata Kumar Das, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Subrata Kumar Das
- Size
- 138 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.5 or later.
- iPhone
Requires iOS 15.5 or later. - iPad
Requires iPadOS 15.5 or later. - iPod touch
Requires iOS 15.5 or later. - Mac
Requires macOS 12.4 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Subra Plus Annual $49.99
- Subra Plus Monthly $4.99
- Copyright
- © Techcraft By Subrata