Side by side
Filly AI vs Instafill
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
Fill any form instantly from saved client profiles.
AI-powered PDF form filler for swift, accurate paperwork.
Primary task
Form filling
Form filling
Pricing
Freemium · Free + from $19/mo
Freemium · Free + from $19.99/mo
Pricing details
Free + from $19/mo
Free + from $19.99/mo
Billing cycle
Monthly
Monthly
API access
Not documented
Not documented
Platforms
Web
Web
Integrations
Not documented
Chrome
Source rating
5.0 / 5 · 3 ratings
5.0 / 5 · 7 ratings
Catalog views
1.6k
2.5k
Estimated monthly traffic
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Catalog imported
31 Aug 2026
30 Aug 2026
Listed strengths
- Processes PDF and Word forms
- Exports, shares, and signs filled forms
- Tailored for professionals such as lawyers and HR teams
- Provides a form-filling workflow
- Remembers client information
- Automatic data population
- Swift document completion
- Elimination of human errors
- Suitable for various sectors
- Handles complex documents
Listed limitations
- No support for offline use
- Limited to PDF and DOCX
- No integrated data validation
- Unpredictable performance on degraded copies
- No multi-language support
- Only works with PDFs
- No mention of API
- No offline functionality
- Focused on form filling only
- No document creation capabilities