Ridley

Ridley brings your Zotero research library to your Android device.
Browse collections, read and annotate PDFs, search across your entire library, and keep your research at your fingertips.

FEATURES

- Full library sync with your Zotero account
- PDF reader with night mode, continuous scroll, and pinch-to-zoom
- Text reflow for readable PDFs on small screens (with on-device OCR for scanned papers)
- Highlight, underline, and strikethrough annotations with 5 colors
- In-PDF text search across all pages
- Table of contents navigation
- Reading position memory: pick up where you left off
- Full-text search (finds text inside PDFs, not just titles)
- Citation formatting via OokCite (APA, IEEE, Chicago, and 10,000+ styles)
- Export annotations as Markdown
- Collections and tags browsing
- Offline PDF caching
- Reading statistics

PRIVACY

- Your Zotero credentials stay on your device
- PDF downloads go directly to Zotero's servers
- On-device OCR runs fully locally (no cloud processing)
- No ads, no tracking

RIDLEY MOBILE (optional upgrade)

Unlock external PDF viewing, offline caching, note sharing, and more for approximately EUR 1/month. Ridley Storage subscribers get mobile features included.

EU-HOSTED STORAGE

Ridley also provides EU-hosted storage for Zotero, starting at EUR 1.50/month for 4 GB. Group library sync with per-group credentials. GDPR-compliant, operated from Iceland.

Built by TurtleTech (turtletech.us)