PDF Hero - PDF Editor & Reader

What it does

PDF Hero is a comprehensive mobile tool for working with PDF documents. It allows users to create PDFs from scratch or by importing files and photos. Its core functionality is a robust editor that enables users to highlight text, add notes, draw, insert images, and apply digital signatures and stamps. The app also includes file management features like password protection, format conversion, and folder organization.

Where it shines

PDF Hero excels in its clean, intuitive editing interface. The contextual toolbars that appear for each function (01:22) keep the screen uncluttered and focused. Adding complex elements like a signature (02:39) or an image (03:15) is remarkably fluid, with simple controls for resizing and placement. The app's use of a pre-loaded, editable PDF as an interactive tutorial (00:49) is another high point, allowing users to learn the tools by actually using them.

UX highlights

Contextual Editing Tools: When a tool like "Highlight" or "Text" is selected, a dedicated menu with relevant options slides up from the bottom. This prevents UI clutter and makes finding the right control easy.
Interactive Tutorial Document: The app uses a "Welcome" PDF as a hands-on guide (00:49). This is an effective way to teach features in a practical, low-stakes environment.
Streamlined Media Insertion: Adding an image to a document (03:13) is straightforward, with intuitive drag handles for resizing and rotation.
Comprehensive File Options: A simple tap on a file's ellipsis menu (04:52) reveals a rich set of actions like renaming, adding protection, converting, and duplicating, all without navigating to a separate screen.
Fluid Signature Creation: The signature tool provides a large canvas for drawing (02:31) and allows for easy resizing and placement on the document, making the process feel natural.
Customizable Stamps: Users can add stamps like "Approved" and then easily adjust their color, opacity, and style (03:43), offering a good degree of customization.

Monetization & growth

The app employs a hard paywall immediately after a brief feature carousel during onboarding (00:22). It pushes users towards a subscription by offering a 7-day free trial, which is presented as an explicit opt-in choice. The app presents both weekly and yearly plans, with the weekly option highlighted as "Popular." This upfront monetization strategy aims to convert users with high intent right away.

Who it’s for

PDF Hero is designed for professionals, students, and anyone who needs to frequently manage or annotate documents on their mobile device. Its feature set is well-suited for tasks like signing contracts, filling out forms, reviewing reports, or compiling notes. The clean interface and powerful editing tools make it a strong alternative to desktop-based PDF software for users who work on the go.

Notes & opportunities

While the editing tools are strong, the app's text recognition on imported images appears limited. When a user tries to edit text on an imported invoice (06:42), a modal states it couldn't recognize text, forcing them to add a new text block instead. Improving the OCR (Optical Character Recognition) capabilities could significantly enhance the user experience for those working with scanned documents. Additionally, the initial in-document tutorial is excellent, but could be even more powerful if it guided users through specific actions step-by-step rather than just presenting the information.