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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
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Readable
✓ verifiedPaid
Instant English-to-Japanese PDF translation preserving layout; useful focused tool.
87K visits/mo177 saves
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Audeus
✓ verifiedFreemium
Text-to-speech reader that turns PDFs, docs, and web pages into natural audio with highlighting, on web and mobile.
54K visits/mo21K saves
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Paperguide
✓ verifiedPaid
All-in-one research platform for reading, writing and managing papers; high traffic.
286K visits/mo4.1K saves
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ChatPDF
✓ verifiedFreemium
Popular tool to chat with PDFs and other documents, giving summaries and cited answers, with a free daily tier and no-signup start.
1.8M visits/mo43K saves
Pricing
Pro Standard (Yearly): 800 /month
Pro Premium (Yearly): 4,000 /month
for Business: Contact for Pricing
Free: $0/mo (limited uploads and Pro voices)
Pro: $9.92/mo (billed annually)
No public pricing
Free: $0/month
Starter: $9/month
Advanced: $16/month
No public pricing
Core features
- ✦Instant PDF translation
- ✦Layout preservation
- ✦Side-by-side English and Japanese viewing
- ✦Chrome extension for one-click translation
- ✦Translation without DeepL subscription (optional)
- ✦Natural AI voices for reading aloud
- ✦Supports PDF, Word, EPUB, and web pages
- ✦Synchronized text highlighting
- ✦Highlighting and annotation tools
- ✦Adjustable playback speed up to 3.5x
- ✦Apps for web, iOS, Android, and Chrome
- ✦AI Chatbot powered by ChatGPT, GPT-4o & Gemini
- ✦Available on multiple platforms (Web, iPhone, Apple Watch, macOS, Android)
- ✦Humanlike responses
- ✦Homework assistance
- ✦Proofreading
- ✦AI Writing Assistant
- ✦AI Search
- ✦Literature Review
- ✦AI Writer
- ✦Reference Manager
- ✦Chat with PDF
- ✦Chat with PDFs, Word, PowerPoint and text files
- ✦Summaries with cited sources
- ✦Multi-file chats via folders
- ✦Any-language upload and chat
- ✦Extra tools: AI writer, detector, flashcards, slides
- ✦No-signup quick start
Use cases
- →Translating English research papers into Japanese
- →Translating technical specifications from English to Japanese
- →Quickly understanding English documents in Japanese
- →Listen to study material and documents
- →Boost focus for auditory learners
- →Read web articles hands-free
- →Get through reading backlog while multitasking
- →Get help with homework, from essays and compositions to math questions.
- →Proofread written work to create professional-grade documents.
- →Get personalized help with any writing project, from essays to social media posts.
- →Act as a travel agent.
- →Finding relevant research papers and getting research-backed answers.
- →Analyzing papers faster with accurate data extraction.
- →Generating and polishing academic content using AI.
- →Streamlining citation and reference management.
- →Understand research papers
- →Study and homework help
- →Review contracts and reports
- →Translate and summarize documents
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