SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
#1Apollo AI records 0 monthly visits with -100% month-over-month growth and Freemium pricing. ChatPDF records 1,044,477 monthly visits with -3.7% growth and Freemium pricing.
AI research assistant for long PDFs, papers, and literature reviews
| Dimension / Metric | ||
|---|---|---|
| Official Domain | useapollo.app | chatpdf.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 0 (0) | 1.04M (1,044,477) |
| MoM Traffic Delta | -434 (-100%) |
| -40.47K (-3.7%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (9.6%) |
|---|
| Direct Visits / mo | 0 | 457.79K |
|---|
| User Rating | 4.2 | 4.2 |
|---|
| Supported Platforms | Website | Website |
|---|
AI research assistant for long PDFs, papers, and literature reviews
Upload papers and reports of hundreds of pages and get summaries, extracted findings, and specific answers in seconds without chunking the file yourself.
The assistant generates its own queries, gathers credible sources, cross-checks the information, and returns a report with citations and a reference list.
Draft literature reviews and produce formatted references in APA, MLA, Chicago, Harvard, and IEEE styles.
Turn research data into bar charts, line graphs, pie charts, and scatter plots ready to drop into a paper or presentation.
Chat with any PDF, video, or website and get cited answers in seconds
Every response is anchored to your source document with clickable citations that scroll to the exact passage, so verification takes seconds instead of page-by-page searching.
Organize documents into folders and query many files in a single conversation to compare arguments, cross-reference findings, or study a whole syllabus at once.
Condense long papers, reports, and contracts into key takeaways, and translate or query documents in any language — including mixing a source language with a different question language.
Generate flashcards and slide decks from your material, and use the built-in AI writer and AI detector for drafting and checking academic text.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
#1
A free, AI-powered academic search engine for 240M+ papers across every scientific field


AI academic search engine for peer-reviewed science
#3
AI research platform for reading, understanding and writing scientific papers
Free / Open-sourceCompletely free PDF reading and editing tool with AI assistant, though basic compared to dedicated platforms.
AI research assistant for evidence-based literature review and synthesis

Free AI-powered PDF editor, converter and reader for every device
The AI workspace where researchers read, write, and cite with every claim traceable to its source

Combines full desktop PDF editing software with AI chat, but requires software installation for full features.

A proactive AI reading lens for papers, videos, and web pages
Includes robust developer APIs for custom document workflows, but free tier limits document page counts.

One prompt, fully cited academic drafts from your own sources
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
A free, AI-powered academic search engine for 240M+ papers across every scientific field
AI research platform for reading, understanding and writing scientific papers
Free AI-powered PDF editor, converter and reader for every device
The AI workspace where researchers read, write, and cite with every claim traceable to its source
A proactive AI reading lens for papers, videos, and web pages
One prompt, fully cited academic drafts from your own sources