ChatPDF summarizes your documents. Reedle reads them with you, line by line.
ChatPDF is fast. Upload a paper, get answers in seconds. That's the job it's designed for, and it does that well for simple documents. But summarizing loses 80% of the detail. For researchers, that 80% is the point.
| Reedle | ChatPDF | |
|---|---|---|
| Mobile PDF with LaTeX/math | ||
| FSRS spaced repetition | ||
| AI Chat on documents | ||
| Multi-document RAG search | ||
| Offline sync | ||
| Zotero integration | ||
| Price | $4.99/mo (30-day free trial) | ~$5–20/mo |
Key differences
In Reedle, you turn key findings into flashcards while you're still reading them. FSRS schedules your reviews. You remember it next month.
LaTeX formulas render correctly in Reedle on your phone. ChatPDF mobile crashes on complex documents and counts failed uploads against your daily limit.
Reedle's RAG Chat searches across your entire saved library. Ask across 200 papers at once: "What did I save about transformer attention mechanisms?"
Ask about the specific formula in section 3.2. Ask why the confidence interval is wide. Ask how this contradicts what you read last week. Reedle answers from the actual document.
The loop that makes reading stick.
Where ChatPDF wins
We believe in honest comparisons. Here's where ChatPDF is genuinely stronger:
- ChatPDF is faster for one-off Q&A on a single document when you don't need to retain the information.
- No account required for basic use, lower friction for a single disposable session.
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