PenNido

Your Android note-taking app

A little space.
For your big ideas.

Take handwritten notes, sketch ideas and annotate PDFs on Android. Bring your digital notebooks into a 3D workspace that feels like yours.

Meet Pennido Coming soon to Google Play ↗
Digital notes · Connected PDFs · 3D workspacesFree first release · Coming soon for Android

Room to think

Write it. Read it.
Make it your own.

WRITE

Think on paper.
Keep it digital.

Write by hand, sketch an idea, add text and highlight what matters. Start with a blank page or a paper template.

Digital notes
READ

A conversation
with your PDFs.

Read and mark up PDFs, then bring your own thoughts into a notebook. Your reading and writing belong together.

PDF annotation
ORGANIZE

A place for
every idea.

Keep your pages in notebooks and folders. Find a favorite page, browse your library and make each cover your own.

Your workspace
Paper for your plansTemplates, colors and page styles
Your library, in orderNotebooks, folders and favorite pages
A copy you controlManual backup export and import

Make it yours

Small details.
A space that’s yours.

A few designs to start with. Open the collections to browse every style in the app.

Set the scene

A desk that feels
like your kind of place.

Three favorites from 24 3D environments. From a warm study to a music studio, there’s more than one way to settle in. Try a mood below, or explore the full collection.

Walnut is selected for the workspace below.

Explore all 24 environments

Stay in the flow

Two spaces.
One continuous workspace.

Your notebook sits to the left of its linked PDF. Watch them move together, just like the four-finger switch in the app.

Notebook + linked PDFInteractive preview
01 / NOTEBOOK
02 / LINKED PDF
THE LEARNING GUIDEPAGE 2 / 3

Small steps.
Lasting connections.

A simple reading routine

Give each reading session a question. Pause to connect a new idea with something you already know.

YOUR LINKED EXCERPT

The learning loop

Read→Reflect→Recall

Read a little. Reflect on the meaning. Recall it in your own words.

Return to your notes and write down what you want to explore next.

Interactive website illustration using Pennido’s 3D scenes. The four-finger gesture switches workspaces in the Android app; it does not turn PDF pages.

Four fingers. A natural switch.

Place four fingers on a blank part of the page. Swipe left to your linked PDF; swipe right to your notebook.

SmartLink keeps the source close.

Crop an area → tap SmartLink → place it from Clipboard. Tap the linked clipping in the notebook above to find its original excerpt.

See how to make a SmartLinkIllustrative English SmartLink crop screen on Pennido’s wooden 3D desk

Choose an area in a PDF or note with Crop. Tap SmartLink to save it to Clipboard, then choose the item and place it in your note. Keep the original document available so the link can find it.

Edited app screenshot · Illustrative content

Your next notebook

Now imagine
your own ideas here.

The first release will be completely free.
The download link will appear here when Pennido is available.

Coming soonGoogle PlayFor Android · Ages 13+Get in touch