OnTask vs pdfFiller vs Formstack Documents Comparison
OnTask
Starting at $49 /Month
- Free Trial
- Large Enterprises
- Medium Business
Increase productivity and deliver better quality documents with OnTask. Using workflow-specific templates, drop-down menus and task forms, this document creation software helps to get the job done quickly, accurately, an…
pdfFiller
Starting at $8 /Month
- Free Trial
- Large Enterprises
- Medium Business
pdfFiller allows users to quickly and easily create PDF files on their Windows PC. Users can fill a PDF form with their own data, or upload an existing Microsoft Word template. Once filled, a PDF document can be saved fo…
Formstack Documents
Starting at $92 /Month
- Free Trial
- Large Enterprises
- Medium Business
Create custom legal forms, contracts, letters and more with Formstack's extensive library of fully customizable standard and legal documents. Create, customize and fill out documents online using our cloud-based software…
OnTask leads on user satisfaction with a 4.8-star rating across 25 reviews.
OnTask vs pdfFiller vs Formstack Documents — at a glance
| Feature | OnTask | pdfFiller | Formstack Documents |
|---|---|---|---|
| Rating | 4.8 / 5 | 4.5 / 5 | 4.7 / 5 |
| Reviews | 25 | 8,757 | 183 |
| Starting price | $49 /Month | $8 /Month | $92 /Month |
| Free trial | Yes | Yes | Yes |
| Free version | No | No | No |
| Best for | Large Enterprises, Medium Business, Small Business | Large Enterprises, Medium Business, Small Business | Large Enterprises, Medium Business, Small Business |
| Category | Document Creation Software | Document Creation Software | Document Creation Software |
| Platforms | SaaS/Web/Cloud | SaaS/Web/Cloud, Mobile - Android, Mobile - iOS, Installed - Windows, Installed - Mac | SaaS/Web/Cloud |
| API | Available | Available | Available |
| Support modes | Business Hours, Online | 24/7 (Live rep) | Business Hours, Online |
| Certifications | — | SOC 2, HIPAA, GDPR | SOC 2, HIPAA, GDPR |
| Data residency | US | US | Global |
Key differences between OnTask and pdfFiller
- Pricing: OnTask starts at $49 /Month, while pdfFiller starts at $8 /Month.
- User satisfaction: OnTask scores higher with a 4.8-star average.
- Deployment: OnTask supports SaaS/Web/Cloud; pdfFiller supports SaaS/Web/Cloud, Mobile - Android, Mobile - iOS, Installed - Windows, Installed - Mac.
Compare OnTask vs pdfFiller vs Formstack Documents — and walk away knowing which one fits.
Which tool fits your team best
Which is actually cheaper for your team size
Where each product wins, per real buyers
Most Document Creation Software tools look identical on paper. This comparison cuts to the differences that matter — pricing structure, team fit, and what real buyers found after signing up.
Biggest differences
Features
Pricing
Buying details
Security
Buyer feedback
Integrations
Product tour
Other options
Talk to an expert Talk to an expert | Talk to an expert Talk to an expert |
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Biggest differences
Start here before you go deeper into features.
Best for quick, accurate document creation using easy workflow templates.
- You need fast, reliable document generation with minimal training.
- Your team prefers simple, streamlined workflows without complex setup.
- You want to improve productivity in legal, HR, or sales document tasks.
- Your company requires highly customized or complex document workflows.
- You need extensive integration with other enterprise software systems.
Best for simple, efficient PDF form creation and filling on Windows PCs.
- You need to quickly fill and save PDF forms repeatedly with saved data.
- Your workflow requires easy integration of Microsoft Word templates into PDFs.
- You want built-in emailing and WYSIWYG printing options within a streamlined app.
- Your team requires advanced document workflow automation or extensive collaboration features.
- You need cross-platform or mobile support beyond Windows.
Best for legal and HR teams needing customizable, collaborative document creation.
- You require a broad library of customizable legal and standard document templates.
- Your team needs real-time collaboration and version control across multiple devices.
- Your organization is mid-sized to large, benefiting from cloud-based document workflows.
- You are a freelancer or sole proprietor with minimal document automation needs.
- Your company demands highly specialized or industry-specific document automation beyond standard templates.
OnTask: Best for quick, accurate document creation using easy workflow templates. pdfFiller: Best for simple, efficient PDF form creation and filling on Windows PCs.
Description | Increase productivity and deliver better quality documents with OnTask. Using workflow-specific templates, drop-down menus and task forms, this document creation software helps to get the ... Read More about OnTask | pdfFiller allows users to quickly and easily create PDF files on their Windows PC. Users can fill a PDF form with their own data, or upload an existing Microsoft Word template. Once filled, ... Read More about pdfFiller | Create custom legal forms, contracts, letters and more with Formstack's extensive library of fully customizable standard and legal documents. Create, customize and fill out documents online ... Read More about Formstack Documents |
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Best Company Size | 51-500 employees500+ employees | 1-50 employees51-500 employees | 51-500 employees500+ employees |
Get pricing help | Get pricing help | Get pricing help |
Software Demo
Demo |
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Compare OnTask, pdfFiller and Formstack Documents on pricing
Review starting price, plan structure, and free-trial access side by side so you can see which option fits your budget and buying process.
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Get help choosing | Get help choosing | Get help choosing |
Security & Compliance
Certifications, data handling, and security controls for IT and compliance evaluators.
SOC 2 | — | ✓ Yes | ✓ Yes |
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HIPAA | — | ✓ Yes | ✓ Yes |
GDPR | — | ✓ Yes | ✓ Yes |
Single Sign-On (SSO) | — | ✓ Yes | ✓ Yes |
Multi-Factor Auth (MFA) | — | ✓ Yes | ✓ Yes |
Data Encryption | — | ✓ Yes | ✓ Yes |
Audit Logs | — | ✓ Yes | ✓ Yes |
Data Residency | 🇺🇸 US | 🇺🇸 US | 🌐 Global |
OnTask vs pdfFiller User Reviews & Rating Comparison
User Ratings | 4.8 (based on 25 reviews) | 4.7 (based on 183 reviews) | |
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Rating Distribution | |||
Spotsaas Editor’s POV generated by AI | Buyer sentiment Buyers generally praise OnTask for its ease of use and efficiency in document creation, though some note concerns about pricing clarity and customization limits. What buyers like
Common complaints
| Buyer sentiment Users generally appreciate pdfFiller for its ease of use and efficient PDF form handling, though some desire more advanced features and clearer pricing. What buyers like
Common complaints
| Buyer sentiment Users generally express high satisfaction with the platform's document customization and collaboration features, though some note pricing and integration limitations. What buyers like
Common complaints
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Pros and Cons |
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Positive Reviews | No reviews available for the product | No reviews available for the product | No reviews available for the product |
Media and Screenshots
Screenshots | No screenshots available. |  4 Screenshots | No screenshots available. |
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Videos |  3 Videos |  2 Videos |  2 Videos |
Alternatives
Alternatives |
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Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].
Frequently asked questions
- Which is better, OnTask or pdfFiller?
- OnTask edges out the other on user ratings (4.8 vs 4.5). That said, the best pick depends on your use case — use the comparison tables above to evaluate each dimension.
- Do OnTask and pdfFiller offer a free trial?
- Yes, both OnTask and pdfFiller offer a free trial.
- What is the starting price of OnTask vs pdfFiller?
- OnTask starts at $49 /Month. pdfFiller starts at $8 /Month.
- What are the top alternatives to OnTask?
- Top alternatives to OnTask include Smart Forms, DocuWare, Documint, pdfFiller, Formstack Documents.
- What are the top alternatives to pdfFiller?
- Top alternatives to pdfFiller include Documint, Adobe Acrobat DC, PDFelement, Fill, Adobe Sign.