Related Products
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About
ArkWarden is a private vault for iPhone that stores photos, videos, documents, and audio files.
Most vault apps hide files behind a lock screen. ArkWarden encrypts every file individually, using a key derived from a pattern you draw, so it is not just a lock screen in front of already-decrypted files. A second factor can be added: a YubiKey hardware security key over NFC, Face ID, Touch ID, or a separate PIN.
Files are encrypted with AES-256-GCM. Keys are derived using PBKDF2-SHA256 at 600,000 iterations with a random salt per vault. Vault metadata is encrypted separately with ChaCha20-Poly1305. A recovery phrase generated during setup restores access if the pattern is forgotten.
The encryption code that protects vault files is open source and published on GitHub, so these claims can be checked against the implementation.
No account, no email address, no server. All data stays on the device. An optional encrypted iCloud backup is available, where only user holds the key.
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About
Granite is an encrypted Markdown note-taking and knowledge management app for individuals and teams. It organizes notes with wikilinks, tags, backlinks, a graph view, daily notes, templates, and offline search, and syncs them across web, desktop, and mobile devices. Each vault has its own encryption key. The built-in MCP server lets Claude, ChatGPT, Cursor, and other compatible AI tools search, read, and update notes in authorized vaults, with answers that cite the source notes. Teams can co-edit shared vaults, add comments and mentions, and publish notes to the web. Business adds SSO, SCIM, audit logs, and security policies. Notes are never used to train AI. Granite offers a free one-vault plan, a Pro subscription, and per-seat Business plans.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Not Supported
On-Premises
Not Supported
iPhone
Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Supported
Mac
Supported
Linux
Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Supported
Chromebook
Not Supported
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Audience
People who store sensitive personal files on their iPhone, such as private photos, legal or financial documents, and personal recordings. Also useful for anyone who shares a device with others and wants a second, unlisted vault, for people who travel and may be asked to unlock their phone, and for those who already use hardware security keys like YubiKey for two-factor authentication elsewhere.
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Audience
Individuals and teams who organize knowledge in notes and want AI assistants to access it with controlled permissions.
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Not Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Supported
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Screenshots and VideosNo images available
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Screenshots and VideosNo images available
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Pricing
No information available.
Free Version
Not Supported
Free Trial
Supported
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Pricing
$3.99/month
The free plan includes one synced vault. Pro is $3.99/month after a 30-day free trial. Business is $14.99/seat/month, with a two-seat minimum and a 30-day free trial.
Free Version
Supported
Free Trial
Supported
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Reviews/
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Reviews/
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Training
Documentation
Not Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationArkWarden
Founded: 2026
arkwarden.app
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Company InformationGranite
Founded: 2026
Saint Kitts and Nevis
granite.md
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Categories |
Categories |
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Integrations
ChatGPT
Not Supported
Claude
Not Supported
Claude for Legal
Not Supported
Cursor
Not Supported
Model Context Protocol (MCP)
Not Supported
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Integrations
ChatGPT
Supported
Claude
Supported
Claude for Legal
Supported
Cursor
Supported
Model Context Protocol (MCP)
Supported
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