Compare tools
Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
⇄ Comparison dimension — pick the market you're actually shopping in
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OpnForm
✓ verifiedPaid
Open-source AI form builder for free forms and surveys; strong adoption and traffic.
30K visits/mo684 saves
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CasperPractice
✓ verifiedFreemium
AI-graded Casper test prep with realistic questions and feedback; free tier, one-time Basic $159 and lifetime Pro $189.
49K visits/mo433 saves
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VWO
✓ verifiedPaid
Established digital experience optimization suite for A/B testing, behavior analytics, and personalization for enterprise marketers.
318K visits/mo
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
Free: $0
Basic: $159 one-time (1-week access)
Pro: $189 one-time (lifetime access)
No public pricing
Core features
- ✦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)
- ✦On-demand exams
- ✦Exam creation tools
- ✦Asynchronous content creation
- ✦Test taker resources and support
- ✦Representative practice questions and tests
- ✦Realistic timed Casper simulator
- ✦Instant AI grading and feedback
- ✦Video answer review
- ✦Rewritten model answers
- ✦4th-quartile score guarantee (paid)
- ✦Split and multivariate testing across web and mobile app
- ✦Session recordings, heatmaps, and funnel analysis
- ✦Feature flag experimentation and web rollouts
- ✦Personalization and audience segmentation
- ✦AI-assisted optimization agent (Wandz)
- ✦Bayesian statistics engine for results analysis
Use cases
- →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
- →Organizations launching certification programs
- →Subject matter experts contributing test content
- →Individuals taking certification exams
- →Practice for the Casper admissions test
- →Get feedback on text and video answers
- →Simulate real Casper test conditions
- →Ecommerce teams optimizing conversion rates
- →SaaS companies running structured product experiments
- →Enterprise UX teams analyzing visitor behavior
- →Marketing teams personalizing web experiences at scale
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