Every stroke of your notes,
traceable.
InkFlo is a handwritten note app built for Apple Pencil. Writing feels as natural as paper, while git-style version control keeps a traceable history of every page.
Currently in development. The full release is coming soon.
Notes shouldn't be lost when you edit them.
Handwritten notes are often overwritten, deleted by mistake, or conflicted across devices. We want notes to work like code: traceable, restorable, and branchable.
Edits you can't undo
A half-written page gets overwritten or deleted, and the previous version is gone. After syncing across devices, the content conflicts.
Every save is a version
Your notebook is a repository. View its history, restore any version, or branch off to try a different way of organizing. Your data stays in your hands.
Made for Apple Pencil.
From the first stroke, it feels natural, and the details hold up through long writing sessions.
Low-latency writing
The stroke path avoids any I/O or blocking work, aiming to keep the nib and the ink almost perfectly in sync.
Smooth ink
After the pen lifts, the stroke outline is rebuilt automatically, for smooth lines with no sharp corners or jagged edges.
Import .goodnotes files
Import GoodNotes .goodnotes files as page sources, then keep writing and organizing. PDFs and images can also be imported as templates.
Parser source code: GitHub · parser-for-goodnotes
PDF annotation
Import lecture slides and papers, then annotate them directly. The original pages are kept and can be exported again.
Handwriting and text search
Planned. Using the platform's native handwriting recognition, you'll be able to search every word you have written.
Your data, your control
Local-first, with no self-hosted cloud server. Back up to iCloud, Google Drive, or your own Git remote.
Box it, then ask AI.
On a note page, select any handwritten or on-page content and ask Claude, Gemini, or other AI services directly, without taking a screenshot or retyping.
Select → Ask
Box the content you want to ask about, choose an AI service, and type your question. Only the content you select and send is passed to the service you choose.
Always your choice
If you don't select and send, nothing is sent. You choose which AI service to use, or skip the feature entirely.
Your note history, at a glance.
InkFlo's core difference: bringing git's ideas to handwriting. Every meaningful change is recorded, so you can go back to any point or branch off into a new attempt.
First draft complete
Week 3 class notes, 4 pages.
Highlights added
Definitions and formulas marked with the Amber highlighter.
A review version branched from the first draft
The original note is untouched. Edit it independently, then decide whether to merge it back.
Added limit definition
Compare any two versions at any time to see what changed.
Starting with iPad, expanding step by step.
The core logic is written in Rust and shared across platforms, and each platform uses its own native interface.
iPad
iPadOS 17+ · Apple PencilPhase 1 · In development
iPhone
iOS 17+Phase 2
Mac
macOS 14+Phase 2
Android · Windows
Shares the same corePlanned
We believe handwriting deserves to be kept well.
InkFlo is built by a team that loves both handwriting and engineering. We believe ideas on paper are precious, and once they're digital, they should be protected and always traceable. We stand for data ownership, writing first, and features that can be verified.
Company: Skailine
- Writing firstThe canvas comes first, and tools appear only when you need them.
- Data ownershipLocal-first. You choose and control your backups.
- Verifiable qualityLatency, ink feel, and data integrity are measured by tests and on real devices.
- Respect nativeEach platform uses its native UI, instead of forcing one interface everywhere.
Questions or partnership ideas? Drop us a line.
Whether it's about the product, a technical collaboration, or anything else, feel free to write to us.
[email protected]