Top 5 Reasons to Choose Under.io Over FormStack
When it comes to creating the best online forms for onboarding and data collection, both Under.io and FormStack are popular options. However, if you're dealing with complex processes like qualifying leads in financial services or managing advanced onboarding workflows, Under.io stands out as the superior choice. In this article, we’ll explore why Under.io is a better fit for businesses that need to go beyond simple form creation and tackle more sophisticated needs.
1. Advanced Onboarding Scenarios Made Easy
Under.io is purpose-built for advanced onboarding scenarios that require fast, seamless qualification of leads. Unlike many Formstack alternatives, Under.io integrates essential features like identity verification services and document collection directly into the form workflow. For industries like financial services, where compliance and speed are critical, Under.io ensures you can gather, verify, and process data efficiently without relying on third-party tools.
FormStack, while a solid form creator, is better suited for straightforward use cases like surveys or event registrations. When it comes to more advanced needs, it falls short in handling the complexity required for industries with rigorous onboarding demands.

2. Fully Customizable Forms for Tailored Experiences
Under.io lets you create the best online forms that are fully customizable to your branding and workflow requirements. Whether you’re collecting sensitive documents, managing eSignatures, or building multi-step forms for complex qualifications, Under.io provides unparalleled flexibility. This level of customization ensures that every touchpoint reflects your brand and simplifies the user experience.
While FormStack offers customization options, they are often limited in scope, especially for those needing highly specific workflows. Businesses looking for Formstack documents alternatives will appreciate Under.io’s ability to adapt to unique challenges with ease.
3. Comprehensive Data Gathering in One Place
One of the standout features of Under.io is its all-in-one approach to data collection. It combines document uploads, identity verification, and eSignatures into a single, streamlined process. This eliminates the need to piece together multiple tools and ensures all data stays in one secure platform.
On the other hand, FormStack often requires additional integrations or workarounds to achieve the same results, making it less ideal for industries that prioritize speed and simplicity. If you’re searching for forms for websites that handle everything from start to finish, Under.io is the clear winner.

4. Faster Lead Qualification with Built-In Identity Services
Speed matters when qualifying leads, especially in high-stakes industries like finance. Under.io’s built-in identity services allow you to verify leads quickly without extra steps, improving conversion rates and reducing delays. This feature makes Under.io an exceptional choice compared to Formstack competitors that don’t offer such advanced capabilities within their platforms.
With FormStack, businesses often need to integrate third-party tools for identity verification, adding both complexity and cost. If your goal is to streamline operations with the best online forms for lead qualification, Under.io delivers unmatched performance.

5. Cost-Effective and Scalable Solutions
Under.io not only outperforms FormStack in functionality but also provides more value for businesses needing advanced features at scale. Its pricing is designed to accommodate growth, allowing you to handle increasing volumes of leads and data without breaking the bank.
FormStack, while effective for basic use cases, can become expensive as your needs evolve. For businesses seeking Formstack documents alternatives, Under.io provides a more cost-effective option with all the essential tools included.
Conclusion
If you’re looking for the best online forms to handle advanced onboarding scenarios, Under.io is the superior choice over FormStack. With its ability to manage everything from identity verification to document collection and eSignatures within a single platform, Under.io is perfect for industries like financial services that require efficiency, security, and customization. While FormStack remains a solid website form builder for simpler needs, Under.io’s advanced capabilities make it the clear choice for businesses with complex workflows.