# Document GPS — Secure File Control & Tracking > Securely track and control email attachments with blockchain encryption. (iPhone/iPad app by ShelterZoom Corp.) - Source: https://appshunter.io/ios/app/document-gps/id1644347594 (this page in markdown: same URL + `.md`) - Developer: [ShelterZoom Corp](https://appshunter.io/developer/1472578633) - Category: Utilities, Productivity - Price: Free - Rating: 4.75/5 from 4 App Store ratings - Age rating: 17+ - Requires: iOS 15.1 · 87 MB - Languages: English - Released: 2023-02-01 - Data updated: 2026-08-12 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/document-gps/id1644347594/reviews.md ## What is Document GPS? Desktop and free Mobile app seamlessly link together so you can track your files on the go. Revoke access from your phone or laptop at any time. Sign up for a 30-day free trial (no credit card required for sign up) via the desktop extension. Japanese and Spanish versions also available on desktop. Track, modify and delete already sent attachments using blockchain-based security. NO need to jump to other platforms to manage your files. - Completely control who can/cannot download, share or access your email attachments, at all times. You can always give or revoke the permission to any recipients to access, download, or share your email attachments. Regardless of who has a copy of your email with your Document GPS attachment, they cannot download, share and access the attachment unless you allow them to. Our system is blockchain-secure, protecting your attachments fully. Never worry again about who sees your files. –Now you can SEND and RECEIVE encrypted attachments. Your recipients can access their Private Library where they can securely upload files with immediate tokenization and encryption. Only you and your recipients can access the Library. Great for healthcare providers, accountants, attorneys, researchers, financial advisors and more. Anyone who needs to have files sent to them in a secure and encrypted platform can benefit from Document GPS. Show your clients you protect their digital privacy from the very first step all the way through the entire process. - Near carbon-free email: prevent attachments from being downloaded or shared when they don't need to be. Do your part by sending "green" attachments for a low carbon email account with Document GPS. - See everything that goes on, in real-time. A timestamped log comes with each document (hence, Document GPS), showing every time each individual user views, shares, downloads, or changes anyone’s permissions on it, in real-time. It shows exactly how many times each user has viewed it. Never worry again about not knowing who sees your files. - Rest easy, with Document GPS’s blockchain security. - All files sent using Document GPS are encrypted, even if the email itself is not, so they are protected from AI scanning the text. - All users have direct and indirect analytics. - Manage your documents without difficulty. --1-Button software gives others a way to interact with you and anyone you invite into your files. --1-Link technology lets you access all the features but with a shareable link you can send to your colleagues or other collaborators. - Within your document workbench is an Email Attachment Library: a list of all the documents you own or have access to. From here, you can monitor and manage your documents and their recipients effortlessly. - All major file types are supported. - There is no limit to the number of attachments you can attach. - Coming soon: users will be able to edit documents using Document GPS - Document GPS uses ShelterZoom's Single Source Of Truth® software technology to create immutable records for sharing of files, communication, collaboration, and permanent record keeping. --See how many times someone has opened your attachments, giving you greater insights into their level of interest in your materials. Great for marketing analytics and budget decisions. --The mobile app lets you take a photo using the app and the picture is NOT stored on your device, providing you greater privacy. --SSOT® security is state of the art ## Key features - Blockchain-based security - Real-time access tracking - Revoke download/share permissions - Encrypted file sending/receiving - Private recipient library - Timestamped activity log ## Frequently asked questions about Document GPS ### What is Document GPS? Document GPS is a utility app that allows users to securely send and track email attachments. It uses blockchain technology to provide robust security and control over who can access, download, or share your files. ### How does Document GPS protect my files? Document GPS encrypts all sent files using blockchain security. This ensures that only authorized recipients can access the attachments, and you can revoke access at any time, even after the email has been sent. ### Can I see who has accessed my files? Yes, Document GPS provides a timestamped log for each document. This log shows exactly when each user views, shares, or downloads your attachment, giving you real-time insights into file activity. ### Does Document GPS have ads? No, Document GPS does not contain advertisements. The app is free to use and does not display any ads to its users. ### What devices does Document GPS support? Document GPS is available for iPhone and iPod devices. The desktop version also supports Japanese and Spanish languages. ### Is there a free trial for Document GPS? Yes, you can sign up for a 30-day free trial of Document GPS via the desktop extension. No credit card is required to start your trial. ### What is the age rating for Document GPS? Document GPS has an age rating of 17+, indicating it is intended for mature users. This is likely due to the sensitive nature of the data it handles. ### How often is Document GPS updated? The latest version of Document GPS is 4.31.1, last updated on April 14, 2026. This indicates a recent update, suggesting ongoing development and support for the application. ## Version history (last 5 releases) ### 4.32.0 — 2026-08-07 - minor technical improvements - fix bugs ### 4.31.1 — 2026-04-14 - minor technical improvements - fix bugs ### 4.31.0 — 2026-03-09 - minor technical improvements - fix bugs ### 4.29.0 — 2025-04-24 - minor technical improvements - fix bugs ### 4.27.6 — 2025-03-20 - minor technical improvements - fix bugs ## Apps similar to Document GPS | App | Rating | Price | Category | | --- | --- | --- | --- | | [Easy Lightning Calculation](https://appshunter.io/ios/app/easy-lightning-calculation/id6752923823) | — | Free | Utilities | | [FileAssist](https://appshunter.io/ios/app/fileassist/id920317293) | 4.0 (1) | Free | Utilities | | [Symania](https://appshunter.io/ios/app/symania/id6503657043) | — | Free | Utilities | | [Chilll - Live Expert Help](https://appshunter.io/ios/app/chilll-live-expert-help/id1621747291) | 3.7 (3) | Free | Utilities | | [Final Exhibit: Case Builder](https://appshunter.io/ios/app/final-exhibit-case-builder/id6758537083) | 5.0 (4) | Free | Utilities | | [Cheerble](https://appshunter.io/ios/app/cheerble/id6743264258) | 3.7 (3) | Free | Utilities | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-12.*