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Turn your notes into a mind map on Android for free

Upload a PDF, DOCX, PPTX, plain notes, or a photo of a page, and get a mind map you can expand and explore branch by branch.

Create mind maps nowFree · No credit card required

Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free · First set needs no signup · Creates mind maps in seconds

How a free mind map app fits Android study

Many Android students want a free mind map app for Android that can handle the messy material they already have, such as lecture slides, scanned textbook pages, and class PDFs. DeckOwl reads those files and turns them into a structured map of main topics and supporting details.

Works with PDF, DOCX, PPTX, plain text, and photos of pages
Editable branches you can expand, collapse, and reorganize
Free plan includes three generations per month, no credit card needed
Students get 40% off a paid plan with a school email

Example Android mind map branches (Android study)

Android app componentsActivities · Services · Broadcast receivers · Content providers

Activity startup callbacksonCreate · onStart · onResume

IntentsExplicit intents name a target class · Implicit intents declare an action · Intent filters let apps receive them

Android UI building blocksViews draw widgets · ViewGroups arrange views · Fragments host reusable screen sections

Android storage optionsSharedPreferences for small key-value data · Room for structured SQLite data · Internal and external file storage

Generate the full set

Starts from your own material

Upload lecture slides, class PDFs, Word files, or photos of handwritten pages, and the mind map is built from that content.

Editable and explorable

Expand or collapse branches to focus on one topic at a time, and adjust the structure when your course frames a concept differently.

Studies beyond the map

Turn the same material into flashcards with spaced repetition or into quizzes with explanations when you are ready to test recall.

How it works

Upload your notes

Add a PDF, DOCX, PPTX, text file, or photo. Photos are read with text recognition.

Generate the mind map

DeckOwl organizes the main ideas into branches and sub-branches you can open and rearrange.

Explore and review

Work through each branch in your browser, then switch to flashcards or a quiz on the same topic.

DeckOwl is a web tool, so there is nothing to install from a store. You open it in Chrome or another browser on your phone or tablet, and the free plan gives you three generations each month with studying done in the browser.

Exports are part of the paid plans. Plus is $39 per year or $7.99 per month and adds unlimited generations plus PDF, DOCX, Anki, and CSV export. Students can get 40% off with a school email, and no credit card is needed to start.

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Free mind map app for notes and PDFs

Turn PDFs and notes into an editable mind map. Start free, 3 generations a month.

Free mind mapping app for students

Turn lecture notes and PDFs into an editable mind map, free to start, with no credit card needed.

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Frequently asked questions

How should I structure an Android mind map for an exam?

Start with the central topic, such as app components or the activity lifecycle, then add one branch for each concept and put the methods, rules, or examples under each branch. Keep each branch to a few sub-points so you can recall the whole map from memory.

How many branches should a mind map on Android topics have?

Five to seven main branches is a practical range for one chapter, with three or four sub-points under each. If a branch grows much larger, split it into its own map so the structure stays readable.

Can I use the free plan on my Android phone?

Yes, you can open DeckOwl in your mobile browser and use the free plan with three generations per month. Exporting to PDF, DOCX, Anki, or CSV requires the Plus plan.

Does the free plan include exports?

No, the free plan lets you study in the browser but does not include exports. Plus at $39 per year or $7.99 per month adds PDF, DOCX, Anki, and CSV export along with unlimited generations.

Generate free mind maps

Keep exploring the topic

Review the main ideas visually or practice recalling them.