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Keshvra
Mobile · Case Study

DocVault – All Document Viewer

A fast, simple Android app that opens PDF, Word, Excel, PowerPoint, text and eBook files in one place, designed and developed end to end from product design to Play Store release.

DocVault – All Document Viewer product preview
The Challenge

Where they started

Reading a PDF, a spreadsheet and an eBook on a phone usually means installing a separate app for every file type. The goal was one lightweight app that opens all common documents, needs no sign-up and never uploads a file.

The Solution

What we built

We designed, built and prepared the complete app for publishing on Google Play: the product, user interface, performance work, app icon and store listing.

  • Opens PDF, Word, Excel, PowerPoint, text and code files, EPUB eBooks and images
  • Finds documents automatically, groups them by type and searches instantly by file name or extension
  • Recent files, favorites and a folder browser with rename, share, copy path and delete
  • Storage analytics that show which file types use the most space
  • Rebuilt file scanning for speed: cached results and indexed MediaStore queries instead of full storage walks
  • New app icon, light and dark Material 3 design, AdMob with consent handling and a release-ready build
The Results

PDF, Word, Excel, PowerPoint, text and eBooks in one app, with no uploads

    Technology used

    • Kotlin
    • Jetpack Compose
    • Android
    • Firebase
    • Google AdMob
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