Productivity
Marginalias
Private document AI
iOS for iPhone and iPad
- $3.99 one-time purchase
- No account
- No ads or app telemetry
Screenshots
3 images · iPhone 6.7"
iPad
3 images · iPad Pro 12.9"
Marginalias is for reading your own documents more closely — a research PDF, a stack of notes, a long report you need to get through. It brings summarizing and question-answering to that material, but it does the work on your device instead of uploading your files to a server.
You import text-based PDFs, plain text, or Markdown into a local library, and from there you can ask the app to summarize a document, answer questions about it, or pull out key points, action items, outlines, and glossary terms. What sets it apart is that it keeps the output honest: every generated claim is tied to the exact evidence behind it, so you can inspect the source excerpts, character ranges, and PDF pages, and see the retrieved context that produced each answer. When you are studying or triaging, that traceability is the difference between a summary you trust and one you have to re-check by hand.
It is built for focused review, note cleanup, study, and document triage. Output can be copied or shared, the library is searchable, and there is a bundled sample document to try before you import anything of your own. Light, dark, and system appearances are all supported.
Nothing about it requires an account, and there are no analytics or advertising SDKs; your documents and the generated output stay with you. One note on requirements: the AI features run on Apple's on-device intelligence, so they need Apple Intelligence enabled. If it is not available, importing and reading still work, and the app tells you what it needs.
About Marginalias
Keep the quote with its source
Evidence Board collects exact passages across your documents, with topics and notes. Verify each clip against the local source and share a focused Markdown evidence sheet.
• Open a document → Clip evidence. Enter an exact passage of at least three characters and choose its occurrence.
• Save a topic and note with the clip. Open Evidence Board from the library to find and review clips.
• Open a clip to verify its quote and source hash, edit notes, or share the visible board.
Exact case-sensitive matching shows up to 32 occurrences. A source hash identifies the local text version; it is not proof of authorship or truth. Up to 256 clips and 1 MiB are retained. Unavailable or changed sources are reported.
Marginalias is a private reading companion for your own documents. Import text-based PDFs, plain text, or Markdown notes, then use on-device intelligence to summarize, ask questions, and pull out useful structure without sending your content to a developer server.
Build a local library of documents, open the source text whenever you need it, and keep AI output close to the material it came from. Marginalias is designed for focused review, research, note cleanup, study, and document triage.
Features:
- Import text-based PDFs, plain text, and Markdown
- Keep a searchable local document library
- Generate concise document summaries
- Ask questions grounded in document excerpts
- Inspect exact evidence excerpts, character ranges, and PDF pages behind generated claims
- See the retrieved context used for each answer
- Extract key points, action items, outlines, and glossary terms
- Copy and share generated output
- Use light, dark, or system appearance
- Review a bundled sample document before importing your own files
Privacy:
Marginalias does not require an account, does not include analytics or advertising SDKs, and does not collect your documents or AI output. Documents and generated output stay on your device.
Device note:
AI features use Apple on-device intelligence. If Apple Intelligence is unavailable or not enabled, importing and reading documents still work and the app explains the requirement.
A Shadowfetch app. Published on the App Store by Robert Corbin.