Digital Products

One Notebook. Built Around Your Work.

Start with the Digital Notebook — a private writing space that works on any device. No account. No subscription. Free to use. Add the Invoice Generator or Project Board whenever you need them.

Free to Use No Account Required Any Device No Subscription Your Data Only
Private notebook — works on any device
Core product
Digital Notebook
Your best ideas vanish into apps you never reopen. One private notebook that follows your link — any phone, tablet, or desktop. Folders, tags, templates, full WYSIWYG editor. Backup built in.
WYSIWYG Editor Folders + Tags 10 Themes 6 Templates Backup & Sync Export Any Device

No account needed. Works on any device.

Open Notebook — Free
Optional add-ons

Extend your workspace

Only buy what you actually need. Each add-on is free to use.

Invoice clients professionally — no monthly fee
Add-on — Invoicing
Invoice Generator
Professional invoices in 60 seconds. Auto tax, 11 currencies, client database, PDF export. No monthly fee ever.
11 Currencies Auto VAT / GST PDF Export Client Database

No account needed.

Open Free
Private kanban board — no subscription
Add-on — Tasks
Project Board
A kanban board you own. Drag cards, set due dates, checklists, priorities. Export anytime. Works fully offline.
Kanban Boards Due Dates Checklists 5 Exports

No account needed.

Open Free
Plugin — Claude
Android Dev Kit
Four Claude skills for the Android tasks that cost the most time. XML to Compose, ProGuard rules, Play Store copy, architecture decisions.
XML to Compose ProGuard / R8 Play Store Copy Architecture

$19 one-time • Claude plugin

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