Your handwriting,
linked.

Obsilide is a handwriting-first notebook for Android. Circle a word you wrote, and it becomes a link to a new note — one whose cover is that handwriting.

In development · Android first

One email when the first build is ready. No list, no noise.

You’re on the list. Talk soon.

How it works

Typing files things away.
Handwriting is where you think.

So Obsilide doesn’t ask you to type your notes back out to make them useful. The link lives on the ink itself — the strokes stay exactly as you drew them.

01

Write

Ink goes down under the nib, not a frame behind it. Rest your hand on the glass — palm rejection handles it.

02

Select a slice

Lasso it, drag along the line, or tap a word. Selection lands on part of a stroke, so it works on cursive.

03

It becomes a link

Tap it later and you’re in a new note. Its cover is the handwriting you selected — nothing to name, nothing to type.

Built for the pen

Fast where it counts.

Front-buffered ink

Wet strokes render straight to the front buffer — the same technique Samsung Notes uses — with motion prediction and full digitizer sampling on top.

Plain files you own

One folder per note: a Markdown file with the links, an ink sidecar with the strokes. Readable in any editor, backed up like anything else.

Canvas that keeps going

Keep writing and the page extends under you. Pinch to zoom in on small handwriting; two fingers to move around.

Palm rejection that trusts the pen

Once the stylus is in play, your hand stops drawing. Pick the pen up and touch scrolls again. The window is yours to tune.

A graph you drew

Links go both ways: every note knows what points at it. Notebooks are covers, not filenames — you recognise your own handwriting faster than any title.

Offline by construction

The app ships without the internet permission. There is no account, no telemetry, and no server it could talk to.

Your notes, your disk

No account. No network permission.

Handwriting is the most personal thing you can put in an app. So Obsilide keeps it in plain files on your device and asks for nothing else.

  • Links live in the Markdown as [[wiki-links]] — the graph rebuilds from text alone
  • Saves are atomic and fsynced; a killed app never leaves a half-written page
  • An unreadable file is quarantined, never deleted — handwriting doesn’t get thrown away quietly
notes/ ├── ideas/ │ ├── note.md ← title + [[links]] │ ├── note.ink ← your strokes │ └── thumbnail.png ← the cover └── reading-list/ ├── note.md └── note.ink

Pricing

Pay once, if you ever pay.

The notebook is free and stays free. Everything paid is a one-time price for life — no subscription, from a developer of one.

Free

$0

The whole notebook. Forever, with no account.

  • Unlimited notes and handwritten links
  • Low-latency ink, pressure pen, highlighter
  • Extending canvas, zoom, reading mode
  • Plain files on your device
Get early access
Most will want this

Premium

$15once · lifetime

Back an indie build, and get every premium feature as it ships.

  • Everything in Free
  • Search and question your handwriting with AIin development
  • Samsung Notes import and syncin development
  • PDF export, notebook covers, full pen palettein development
  • Every future premium feature, no upgrade fee
Claim the lifetime price

Straight about what exists: version 1 is the free notebook — ink, links, canvas, local files. Items marked in development are on the roadmap, not shipping yet; paying early is how you lock the lifetime price and fund them. Nothing here renews, ever.

Be there for the first build.

Android first. One email when it’s ready.

You’re on the list. Talk soon.