Ledor vs Strobe
Ledor
ledor.app
Strobe
strobefast.appSide by side
| Figure | Ledor | Strobe |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | Yes | — |
| macOS | — | Yes |
| Linux | Yes | — |
| iOS | Yes | Yes |
| Android | Yes | — |
| Plans published | 1 | 1 |
| Spec score · Speed Reading Apps | 8.7 (#3) | 7.2 (#24) |
| Offline use | The app says it works without internet, with syncing optional and books and progress stored on the device. | Imported text can be read offline, and Strobe does not offer cloud sync between devices. |
| Privacy | The privacy policy says Ledor collects no data and has no analytics, ads, tracking, accounts of its own, or servers of its own. | Documents, reading progress, and settings stay on the device, and the app has no account, analytics, or document uploads. |
| What it does | Ledor is an open-source speed reader for EPUB books and web articles using rapid serial visual presentation with an Optimal Recognition Point highlight. | Strobe is an RSVP reader that presents words one at a time at a fixed point for reading PDFs, EPUBs, and text. |
Plans
In their own words
Ledor
Ledor is a free, open-source reader for RSVP, EPUB files, and web articles, available on Android, iOS, Linux, and the web. It offers RSVP, text-to-speech narration, and a traditional e-reader mode. Readers can import EPUBs or save articles by URL; Android users can also share a page with the app. Text-to-speech uses system voices, provides lock-screen controls, and supports speeds from 0.5× to 3×. Appearance settings cover colors, fonts, sizes, and positions, with light and dark themes and a live preview.
Ledor works offline, storing books and progress on the device. Optional Google Drive sync can carry the library, progress, bookmarks, ratings, sessions, and display settings across devices. The privacy policy says the app collects no data and has no analytics, ads, tracking, accounts, or servers of its own. Weekly and monthly reading charts and a shareable monthly recap are calculated on the device. The MIT-licensed free plan includes all features, with no ads or account required.
Strobe
Strobe is an RSVP reader for PDFs, EPUBs, and text. It displays one word at a time at a fixed point, with adjustable reading speeds from 100 to 1,000 words per minute. Smart Timing changes word intervals according to word length, punctuation, sentence endings, and complexity. The app imports PDF, EPUB, TXT, and Markdown files and accepts pasted text. Readers can search passages, browse chapters, and resume at the exact word where they stopped. Documents, progress, and settings remain on the device, with no account, analytics, document uploads, or cloud synchronization. Imported text works offline. Accessibility support includes VoiceOver, larger text, Reduced Motion, Dynamic Type, and keyboard controls on compatible devices. Strobe runs on iOS, iPadOS, and macOS. It has a free plan with no subscription, advertisements, or in-app purchases. DRM-protected EPUBs and password-protected PDFs are unsupported, and PDFs need a text layer because the app does not run OCR.