Frequently Asked Questions

Noxidox is an iOS app that lets you analyze and search documents using on-device AI — fast, private, and entirely on your device.

Noxidox currently supports PDF files. Additional formats are planned and will be available in future updates.

The Free plan allows up to 10 documents across 3 projects. With Pro, there are no limits — add as many documents and projects as you like.

All data is stored exclusively on your device. Noxidox processes everything locally — your documents never leave your iPhone.

No. Noxidox processes all documents entirely on your device. No data is sent to external servers. With Pro, you can optionally enable iCloud sync — your data remains end-to-end encrypted.

Apple Intelligence is Apple's on-device AI framework that runs directly on your iPhone. Noxidox uses this framework for local document analysis — without sending data to the cloud.

Noxidox requires an iPhone with Apple Intelligence support. This includes iPhone 15 Pro, iPhone 15 Pro Max, and all newer models with the A17 Pro chip or later.

Noxidox requires iOS 26 or later on a compatible iPhone with Apple Intelligence support.

Yes. Since all processing happens on your device, Noxidox works fully offline — no internet connection is needed.

Noxidox uses a technique called Retrieval-Augmented Generation (RAG): it first searches your document for the most relevant passages, then passes those passages to the AI. If the search doesn't retrieve the right passages — for example because your question uses different wording than the document — the AI will correctly report that the provided excerpts don't contain an answer. This is expected behavior, not a bug. Try rephrasing your question using words that are likely to appear in the document itself.

Yes, but results improve when your question matches the document's own language. Noxidox uses Apple's on-device language model to find relevant passages. This model understands general English well, but may not recognize highly specialized or proprietary terminology. For example, if a methodology book coins its own terms (like 'appetite' or 'circuit breaker' for a project management concept), asking about 'time boxing' or 'risk management' may not retrieve the right passages. Try asking with the exact terms the document uses.

A few tips: (1) Use the same terminology the document uses rather than synonyms or paraphrases. (2) Ask specific questions rather than broad ones — 'What is the six-week cycle?' works better than 'What are the key facts?'. (3) If a document covers multiple topics, ask one focused question at a time. (4) Very image-heavy documents (e.g. presentation decks with mostly diagrams) may yield fewer results, as Noxidox analyzes text content.

Noxidox uses Apple Intelligence — Apple's on-device AI framework — for features like automatic title generation, tag suggestions, and document Q&A. Apple's on-device AI includes built-in safety guidelines that can occasionally decline to process content involving detailed medical dosage data, toxicology information, or substance-related warnings. This is a system-level behaviour of Apple Intelligence and is not specific to Noxidox. It may occur with pharmaceutical package inserts (SmPCs), clinical study reports, or similar professional documents. For title and tag generation, Noxidox automatically falls back to a keyword-based alternative so you always receive a usable result. In the chat interface, try rephrasing your question to focus on the document structure or non-sensitive sections.

The Free plan includes 3 projects, 10 documents, 50 questions per month, on-device AI, PDF support, and voice input — free with no time limit.

You can upgrade to Pro directly in the app. The subscription is managed through the App Store and can be billed monthly or annually.

You can cancel your Pro subscription anytime through the subscription management in the App Store. You'll keep Pro features until the end of your current billing period.