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ChatPDF
✓ verifiedFreemium
ChatPDF lets users chat with and extract from PDFs; widely used, high traffic.
👁 1.8M/mo♥ 43K
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Google Opal
✓ verified
Google Opal builds AI mini-apps via natural language; official Google product.
👁 2.1M/mo
Pricing
No public pricing
Basic: $0/month
Pro: $20/month
Team: $49/month
No public pricing
No public pricing
Core features
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- ✦Integration with Notion databases
- ✦Unlimited fields and submissions
- ✦Customizable form styling
- ✦Conditional logic and validation rules
- ✦Ready-made form templates
- ✦File uploads
- ✦Multi-page forms
- ✦Email, Slack, and Discord notifications
- ✦Submission editing
- ✦Form protection (password, captcha)
- ✦AI-powered PDF interaction
- ✦Text extraction from PDFs
- ✦GPT analysis of PDF content
- ✦Summarization and question answering
- ✦Cited sources in answers
- ✦Multi-language support
- ✦No-Code AI Mini-App Creation
- ✦Natural Language Building and Editing
- ✦Rapid Prototyping
- ✦Intuitive Visual Editor (Node-based workflow)
- ✦Instant Hosting and Sharing of Apps
- ✦Multi-step AI Workflow Creation
- ✦Gallery of Demo Opals for Remixing
- ✦Debugging with Console
- ✦Automatic Version History
Use cases
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- →Guest blog submission forms
- →Event attendee check-in forms
- →Customer satisfaction surveys
- →Patient intake forms
- →Photography quotation requests
- →Equipment rental requests
- →Photo shoot permit requests
- →Extracting information from research papers
- →Understanding legal contracts
- →Summarizing books and essays
- →Answering questions from manuals
- →Generate full blog posts from a topic input.
- →Create Google Doodles that look up historical events and generate logos.
- →Develop apps that solve math problems from screenshots, provide explanations, and solutions.
- →Generate DJ tracks based on mood or preferences, including intros and YouTube links.
- →Build apps to find and present historical events related to a user's birthday.
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