---
title: "Vault 139 — App Overview"
url: https://marlvel.ai/intel-report/food-drink/uk-co-theappdesigner-apps-ios5e657c352785a
category: Food & Drink
developer: Vault 139
platforms: ios, android
rating: 5.0 (46 ratings)
pricing: free
report_level: overview
generated: 2026-04-24
last_verified: "2026-04-24T11:07:10.076Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** Vault 139 differentiates itself by prioritizing client-side encryption and granular access control for secure, password-free file collaboration.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Food & Drink |
| Rating | 5.0 ★ (46) |
| Pricing | free |
| Platforms | iOS, Android |
| Latest Version (iOS) | 1.0 |
| Latest Version (Android) | 6.3.2 |
| Developer | Vault 139 |

<!-- SECTION: Summary -->
## What is Vault 139?

Vault 139 is a cross-platform file sharing and document management application that utilizes public key encryption to secure data. It enables users to manage document rights and sign PDFs without the need to share passwords or encryption keys.

<!-- SECTION: Key Features -->
## Key Features

- **Digital Rights Management**: Allows sharing of text, markdown, PDF, and image files with read-only access for specific recipients or user groups.
- **Client-end Encryption**: Utilizes public key encryption to ensure data is encrypted and decrypted exclusively on the user's device rather than in the cloud.
- **Mobile Endpoint Control**: Enables the revocation of file access for specific devices by tying access to unique device keys.
- **Secure PDF Signing**: Provides integrated functionality to sign PDF documents securely within the application.

<!-- SECTION: Target Audience -->
## Who is it for?

Professionals and organizations requiring secure, granular control over sensitive document sharing and access.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/vault-139/id1516672240?uo=2)
- [Google Play](https://play.google.com/store/apps/details?id=com.clault.kryptos&hl=en&gl=us)
- [Full Intelligence Report](https://marlvel.ai/intel-report/food-drink/uk-co-theappdesigner-apps-ios5e657c352785a)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/food-drink/uk-co-theappdesigner-apps-ios5e657c352785a).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*