Hobby & Collecting
InkRotation
Which ink is in which pen — right now.
Private pen & ink rotation tracker. Offline-first, no ads, no account.
Why InkRotation exists
Fountain-pen enthusiasts track their rotation in web apps that need a login or in spreadsheets that do not travel. InkRotation is a mobile-native, offline catalogue that remembers which ink is in which pen right now and how long it has been there.
What InkRotation does
- Pen catalog: brand, model, nib size, filling system, and photos
- Ink catalog: brand, hex-coded colour swatches, and ink type
- Currently inked dashboard with a days-inked counter
- Un-ink and clean a pen — the usage period is logged automatically
- Usage history: which pens have used which inks, and for how long
- Search and filter pens and inks by brand, type, or name
- Export your collection as CSV or JSON anytime
- Fully offline — no account, no cloud, no tracking
Screenshots
Privacy and local storage
InkRotation stores your whole collection locally. No account, no tracking. Optional Drive sync goes through your own Google Drive only.
Optional Google services
- + Google Drive (optional): back up and restore your collection via your own Drive account
All Google services are optional. InkRotation works completely without them.
Affiliate links disclosure
InkRotation may include clearly-labelled contextual links to pens, inks, paper, and accessories. Links are optional and never shown inside your collection.
Get InkRotation
Get it on Google Play
Google Play
Play Store listing coming soon. The app is under active development.