Stack

Download Stack – document scanner, PDF scanner, document organizer, PDF organizer, file manager, mobile app, OCR, Google Drive backup, secure document storage, no ads, free document scanner

Overview

Stack is a document management application developed by Area 120 by Google, designed to streamline the organization of physical and digital documents. The software functions as a mobile-focused tool that enables users to scan, categorize, and retrieve important files such as receipts, bills, and PDFs using their smartphone’s camera. It is particularly suited for professionals and individuals seeking a clutter-free way to manage personal and work-related documentation. The app operates on both Android and iOS platforms, offering a free, ad-free experience with no in-app purchases required. While the primary interface is optimized for mobile use, it does not currently support desktop environments. Stack leverages optical character recognition (OCR) technology to allow users to search for specific text within documents, enhancing accessibility and retrieval efficiency. The developer did not provide additional system requirements or details about data handling beyond the stated security features. Real-world usage includes digitizing paper-based records, maintaining financial documentation, and organizing contracts or invoices. The app integrates with Google Drive for backup purposes, ensuring data persistence and recovery options. Despite its mobile-only availability, Stack aims to deliver a seamless experience for users who prioritize document security and simplicity.

Key Features & Capabilities

• Document Scanning via Camera – Users can capture physical documents in real time using their smartphone’s built-in camera, automatically adjusting lighting and alignment for optimal results.
• Automatic File Organization – Once scanned or imported, documents are categorized into logical groups such as receipts, invoices, or contracts based on content analysis.
• OCR-Powered Search – The app uses optical character recognition to index text within documents, enabling users to find specific information by keyword or phrase.
• Google Drive Backup Integration – Users can securely back up their documents to Google Drive, ensuring protection against accidental deletion or device loss.
• Biometric Security – Optional fingerprint or face recognition authentication enhances privacy and prevents unauthorized access to sensitive files.
• File Import from Camera Roll – Existing digital files from the device’s photo library can be easily added to the document collection without re-scanning.

These features collectively support efficient workflow management for users who frequently handle paper-based documentation. For example, a small business owner can scan receipts after a business trip and instantly retrieve them by searching for a vendor name or date. Similarly, a student can digitize lecture notes and organize them by course or topic. The app’s automation reduces manual effort, minimizing the risk of misplacement or disorganization. However, the developer did not specify whether metadata tagging or custom labeling is supported. Users relying on advanced file management may find limitations in folder customization or external storage access.

User Interface, Workflow & Performance

Stack features a clean, minimalist user interface designed for intuitive navigation on mobile devices. The main screen displays a central camera button for scanning, with quick-access tabs for recent documents, categorized folders, and search functionality. Navigation is straightforward, with minimal onboarding required. The workflow begins with capturing or importing a document, followed by automatic processing and categorization. Users can then search for content using OCR or browse through organized sections. The app maintains responsiveness during scanning and indexing, though exact performance details were not specified. The developer did not provide information on CPU or RAM usage, nor did they share benchmarks for processing speed. Stability appears consistent based on general mobile application behavior patterns. However, users may experience delays when processing large volumes of documents due to background OCR analysis. The app does not appear to support offline mode for full functionality, suggesting that some features may require an active internet connection. Performance observations are based on general software behavior patterns.

Compatibility & System Requirements

Stack is available for Android and iOS devices, with the current version listed as 1.0.0. The installation size is 25 MB, indicating a lightweight footprint suitable for most smartphones. The app does not support desktop operating systems such as Windows or macOS. Platform compatibility information is limited to mobile platforms. The developer did not specify minimum hardware requirements, such as RAM, processor type, or storage capacity. Exact system requirements were not listed. Users should ensure their device meets standard Android or iOS system standards for app installation. No mention was made of support for SD card storage or external file systems. All documents are stored locally on the device’s internal storage, which may affect long-term usability on devices with limited space.

Pros and Cons

Pros

• Free of charge with no ads or in-app purchases
• Intuitive mobile interface with fast scanning and organization
• OCR technology enables powerful text search across documents
• Secure biometric authentication options for privacy
• Seamless integration with Google Drive for backup
• Automatic categorization reduces manual sorting effort

Cons

• Not available for desktop or PC software platforms
• No option to create custom folders or save files to SD card
• Does not support Google Workspace (Gsuite) accounts
• Documents are stored only on internal device storage
• Limited customization for file organization and tagging

FAQ Section

Is Stack available for Windows or Mac?

Stack is currently only available for Android and iOS devices. It is not available as a desktop application for Windows or macOS.

Can I use Stack without an internet connection?

While basic scanning and local storage functions may work offline, certain features such as OCR search and Google Drive backup require an active internet connection.

Is my data secure in Stack?

Yes, the app supports biometric authentication and integrates with Google Drive for secure backups. The developer did not provide further details on encryption methods or data retention policies.

Does Stack support Gsuite accounts?

As of the current release, Stack does not support integration with Google Workspace (Gsuite) accounts.

Can I save documents to my SD card?

No, the app does not allow saving files to external storage such as an SD card. All documents are stored on the device’s internal storage.

Final Thoughts

Stack delivers a compelling solution for mobile users seeking a simple, secure, and efficient way to manage documents. Its ability to scan, organize, and search files using OCR makes it a valuable tool for professionals and individuals alike. While the lack of desktop support and limited folder customization are notable drawbacks, the app’s core functionality remains robust and reliable. The absence of ads and in-app purchases enhances the user experience, aligning with Google’s commitment to clean, privacy-focused tools. For those who rely heavily on mobile document management and value automation and security, Stack stands out as a strong choice. Despite its limitations, it successfully addresses the common pain point of digital clutter. Download Stack now.