Sigmy
Private on-device AI & PDFs
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Now with table answers, chat search, and smarter follow-ups. Ask about your PDFs, get cited replies, and keep digging — all on your iPhone, fully offline.
Sigmy is a fully on-device AI assistant. The language model, document search, and every piece of private text stay on your iPhone or iPad. No cloud. No account. No tracking. No training on your data. Ever.
WHY SIGMY IS DIFFERENT
• Runs a Google Gemma model locally on your device — no API keys, no subscriptions to external AI services, and no network round-trips that can leak your content.
• Works offline, on a plane, in a tunnel, or in a sensitive workplace where cloud AI is banned.
• Your documents, chats, and questions never leave your device. We cannot read them and neither can anyone else.
WHAT YOU CAN DO
• Ask questions about your PDFs, Word docs, text files, Markdown, and scanned images — every answer cites a tappable source passage.
• Import documents by tapping +, scanning with the camera, capturing text from photos, pasting images, or sharing from any other app.
• Compare two or more documents side-by-side — "what's different between these contracts?", "which proposal has better terms?".
• See comparison answers as clean tables when the model formats them that way.
• Tap suggested follow-up questions after each answer to dig deeper with one tap.
• Extract events from any document straight to your Calendar — meeting dates, deadlines, travel itineraries.
• Hands-free mode: have Sigmy read answers aloud in your choice of voice — fully on-device.
• Dictate questions by voice and export chats as PDF, Markdown, plain text, RTF, or email.
• Search your chat history to find past conversations instantly.
• Full-text search across every document you've imported, with semantic ranking that understands what you meant.
• Quick-prompt templates for executive summaries, action items, study outlines, and timelines.
PRIVACY BY DESIGN
• Optional Face ID / Touch ID unlock for the whole app.
• Optional AES-GCM encryption of the document index at rest, sealed whenever you background the app.
• Privacy manifest declares every iOS API we touch and why.
• PII detection warns you before indexing credit card numbers or other sensitive identifiers.
FREE TRIAL — 7 DAYS OF EVERYTHING
Every new install gets a 7-day free trial with full Pro features: unlimited documents, extended memory window, and all advanced tools. No credit card required.
SIGMY PRO
After the trial, Sigmy Pro unlocks:
• Unlimited document imports and queries
• Extended memory window for long files
• All advanced tools and future Pro features at no extra cost
THREE WAYS TO SUBSCRIBE
• Pro Monthly — $5.99/month after a 7-day free trial
• Pro Yearly — $39.99/year after a 14-day free trial (saves ~50% vs monthly)
• Lifetime Pro — one-time $79.99, permanent access, no renewals
SUPPORTED DOCUMENT TYPES
PDF, Word (.docx), plain text (.txt), Markdown (.md), Rich Text (.rtf), HTML, CSV, and images containing text (via on-device OCR).
DEVICE REQUIREMENTS
iPhone or iPad with sufficient RAM for on-device AI. Sigmy adapts memory settings automatically to your device. The language model (~3.4 GB) is included in the app — no separate download after install. Works fully offline once installed.
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SUBSCRIPTION TERMS
Sigmy Pro is an auto-renewable subscription.
• Pro Monthly: $5.99 per month after a 7-day free trial.
• Pro Yearly: $39.99 per year after a 14-day free trial.
• Lifetime Pro: one-time $79.99 non-renewing purchase.
Payment will be charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscription in Settings → Apple Account → Subscriptions.
Privacy Policy: https://www.sigmygroup.com/privacy
Terms of Use: https://www.sigmygroup.com/terms
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What's new in 1.0.4
• Table answers. When Sigmy compares documents or lists structured data, pipe tables now render as clean, scrollable tables instead of raw text.
• Chat history search. Find any past conversation from the Chats list with the new search bar.
• Faster document search when you refine or repeat similar questions.
• Refreshed chat experience from 1.0.3: lighter answer layout, smoother streaming, time-of-day greeting, gradient send button, and one-tap follow-up suggestions after each reply.
• Code blocks now appear in tidy cards with a one-tap Copy button.
• Fixed an issue where hidden model markers could briefly appear in streamed replies.
• General polish across Chat and Documents.
Everything still runs entirely on your device. Nothing leaves your iPhone or iPad.
The developer, SIGMY GROUP PTY LTD, 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
- SIGMY GROUP PTY LTD
- Size
- 3.5 GB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 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
- Lifetime Pro $79.99
- Pro Yearly $39.99
- Pro Monthly $5.99
- Copyright
- © 2026 Sigmy Group Pty Ltd