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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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OpnForm
✓ verifiedPaid
Open-source AI form builder for free forms and surveys; strong adoption and traffic.
👁 30K/mo♥ 684
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ChatPDF
✓ verifiedFreemium
ChatPDF lets users chat with and extract from PDFs; widely used, high traffic.
👁 1.8M/mo♥ 43K
Pricing
No public pricing
Free: $0
Pro (Monthly): $16 per month
Pro (Yearly): $16 per month (billed yearly)
Basic: $0/month
Pro: $20/month
Team: $49/month
No public pricing
No public pricing
Core features
- ✦Voice, video, audio, and text surveys and forms
- ✦AI Probing
- ✦AI Survey Generation
- ✦AI Translation (50+ languages)
- ✦AI Transcription
- ✦Sentiment and Thematic Analysis
- ✦Standard Survey Features (multiple choice, likert scale, etc.)
- ✦Voice and Video Responses
- ✦Branching and Logic
- ✦Customization
- ✦AI Form Builder
- ✦Unlimited forms, fields, and responses (Free plan)
- ✦Form logic, URL pre-fill, Hidden fields
- ✦File uploads, Custom code, Webhooks
- ✦Customizable themes and thank you pages
- ✦Form Analytics
- ✦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
- ✦AI-powered petition drafting
- ✦Effortless achievement collection
- ✦Tailored AI-editor for immigration petitions
- ✦One-stop document assembly and filing
- ✦Recommendation letter builder
- ✦Smart form filling
- ✦Summary of Contributions (SoC) drafting
Use cases
- →Concept Testing
- →Net Promoter Score
- →Brand Tracking
- →Diary Study
- →Product Feedback
- →Exploratory Research
- →Event Feedback
- →Creative Testing
- →Creating contact forms
- →Conducting surveys
- →Collecting internal announcements
- →Managing warehouse inventory check-ins
- →Gathering training feedback
- →Processing international job applications
- →Streamlining legal petitions
- →Supporting environmental initiatives
- →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
- →Drafting NIW, EB1, H1B, and O1 petitions
- →Organizing and indexing exhibits for petitions
- →Mining evidence to strengthen petitions
- →Preparing ready-to-file petition packages
- →Drafting a Summary of Contributions (SoC)
- →Streamlining the green card application process
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