Reedle

Reedle is a reading app designed for people who want to actually understand and remember what they read. It combines PDF and LaTeX rendering, AI chat, and a built-in spaced repetition system into one app that works on your phone, tablet, or desktop. You can save articles, PDFs, and EPUBs, then chat with them like a knowledgeable study buddy — ask questions, get explanations, or have the AI summarize key arguments. The app also renders complex mathematical equations correctly, a rare feature on mobile.

The standout features are the AI companion and the FSRS spaced repetition algorithm (the same one used by Anki). While reading, you can highlight passages and the app will schedule those highlights for review later, turning passive reading into active recall. Listen Mode converts long articles into a podcast using neural text-to-speech, perfect for commuting. For language learners, Smart Translation provides contextual translations and grammar breakdowns. The Library AI Search lets you query across your entire saved collection, searching articles, highlights, and even your own comments.

Reedle is built for students, academics, and lifelong learners who consume long-form content regularly. It fills a gap between reading apps that only save articles and study tools that lack reading context. If you’re a PhD candidate tackling dense papers, a language learner reading native articles, or just someone tired of forgetting what you read, Reedle offers a practical loop: save, read, understand, remember, repeat.