Private Photo Vault controls access to your photos with a PIN screen. ArkWarden derives an encryption key from your pattern, so the files themselves are protected, not only the access screen. This page shows exactly what each approach means in practice.
Private Photo Vault controls access to your photos with a PIN. The PIN is a gate at the app entrance. Pass it, and the files inside are accessible. The gate is the protection.
ArkWarden uses your pattern to derive the encryption key through PBKDF2 with 600,000 iterations. The key produced by that derivation is what protects every file. Without the correct pattern, the files are encrypted data. Not locked-away files that can be reached another way. Encrypted data that cannot be read without the key.
The difference matters when someone has access to your device's file system rather than to the app itself.
Private Photo Vault has millions of users and a long record of use. It is a capable app for keeping photos away from casual access. ArkWarden encrypts every file individually on your device with a key derived from your pattern. If file-level encryption, no account, no ads, and a hardware security key option matter to you, the comparison below shows each app row by row.
24 points across five categories. Each row shows what the product actually does in practice.
✓ Yes ✗ No ~ Partial
Encryption
| Feature | ArkWarden | Private Photo Vault |
|---|---|---|
|
File encryption
Every file is encrypted individually on your device
|
✓
AES-256-GCM + ChaCha20-Poly1305, always on
|
~
AES-256 for Cloud Vault backup only. Local files are PIN-protected, not individually encrypted.
|
|
Pattern-derived encryption key
Unlock pattern creates the encryption key that protects your files
|
✓
PBKDF2 with 600,000 iterations on every unlock
|
✗
PIN is an access gate, not an encryption key source
|
|
Unique encryption per file
Identical files always produce different encrypted output
|
✓
Each file encrypted independently
|
✗
No per-file encryption for local storage
|
|
Encrypted vault metadata
File names, folder structure, and vault information remain encrypted
|
✓
Metadata encrypted alongside file content
|
✗
Not stated for local storage
|
|
Device-locked key protection
Keys are protected by the iOS Keychain, encrypted at rest by the Secure Enclave
|
✓
Master key encrypted in Keychain, device-locked
|
✗
Not stated
|
Authentication
| Feature | ArkWarden | Private Photo Vault |
|---|---|---|
|
Pattern unlock
Draw a pattern instead of typing a password
|
✓
5x5 grid, pattern is the encryption key source
|
~
Pattern/Dot Lock available, but does not derive an encryption key
|
|
Biometric unlock
Unlock with Face ID or Touch ID
|
✓
Optional second factor via Apple's Secure Enclave
|
✓
Face ID supported
|
|
PIN unlock
Separate PIN as a second authentication factor
|
✓
6-digit PIN, independent of device passcode
|
✓
Primary unlock method
|
|
Hardware security key
Physical key as a second authentication factor
|
✓
YubiKey over NFC, FIDO2
|
✗
Not available
|
|
Independent from device passcode
Device passcode does not open the vault
|
✓
Pattern and passcode are completely separate
|
✓
App has its own separate PIN
|
Privacy
| Feature | ArkWarden | Private Photo Vault |
|---|---|---|
|
No account required
No email address, registration, or personal identity required
|
✓
No sign-in of any kind
|
~
Optional for basic use. Required for Cloud Vault and password recovery.
|
|
No server dependency
Vault exists only on your device
|
✓
No server at all
|
~
Cloud Vault uses their servers. Password recovery requires a server.
|
|
No advertising
No ads, trackers, or advertising network integrations
|
✓
Funded by direct payment only
|
✗
Free tier is ad-supported. Ads removed with a paid subscription.
|
|
No personal identifier
No account, no email, no identity attached to your vault
|
✓
No identity, no profile, nothing linked to you
|
~
Email linked to account if Cloud Vault or recovery is enabled
|
|
Screenshot protection
Screenshots are blocked throughout the app
|
✓
Blocked throughout the entire app
|
✗
Not stated
|
|
Fully offline
All features work without an internet connection
|
✓
No network required for any feature
|
✓
Works offline. Cloud Vault and recovery require a connection.
|
|
Open source
The code that protects your files is public and can be reviewed
|
✓
The encryption that protects your files is open source
|
✗
Closed source
|
|
End-to-end encrypted backup
Backup where only you hold the key to decrypt it
|
✓
iCloud or exported file, encrypted on device, only you hold the key
|
~
Cloud Vault backup, but the account can hold your key
|
Vault
| Feature | ArkWarden | Private Photo Vault |
|---|---|---|
|
Alternate vault with a separate pattern
A second fully functional vault, opened by a different pattern
|
✓
Wing: a second vault with its own pattern, name, and files. Nothing in the app indicates it exists.
|
~
Decoy Password opens a separate empty view. Not a fully functional second vault.
|
|
Folder organization
Group files into named folders inside the vault
|
✓
Unlimited folders. Create and drag files between them.
|
✓
Albums with optional per-album passwords
|
|
Recovery phrase
Regain access if the pattern is forgotten
|
✓
BIP-39 phrase, 12 or 24 words
|
~
Recovery via registered email address. Requires a server.
|
Files
| Feature | ArkWarden | Private Photo Vault |
|---|---|---|
|
Capture photos and videos in-app
Take a photo or video that goes straight into the vault, never to the camera roll
|
✓
Captured directly into the encrypted vault. Never written to the Photos library.
|
✗
Import only. Photos must already exist in the Photos app or be transferred in.
|
|
Documents, PDFs, and audio
Store files beyond photos and videos
|
✓
Any format from the Files app
|
✗
Photos and videos only
|
|
Unlimited storage
No file count or size cap inside the app
|
✓
Device storage is the only limit
|
~
Limited in free tier. Unlimited with paid subscription.
|
A PIN controls access to an app. It does not control access to the files the app stores. Tools that connect to a device over a cable, read a device backup, or access the file system without going through the app can reach files stored without encryption. Private Photo Vault's own FAQ confirms AES-256 encryption applies to Cloud Vault. For files stored locally with Cloud Vault disabled, their FAQ describes PIN protection but does not state that local files are individually encrypted. ArkWarden encrypts every file on the device regardless of any cloud or backup setting.
Private Photo Vault stores photos and videos. ArkWarden accepts any file type from the Files app: PDFs, spreadsheets, scans, any format. All are encrypted the same way.
Private Photo Vault uses an email address for password recovery and Cloud Vault access. That email connects your vault to an identity on their servers. ArkWarden has no account and no email. Recovery uses a BIP-39 phrase you write down yourself. No server is involved.
Private Photo Vault's free tier shows ads. A privacy app that shows ads is running ad network code, which connects to external servers and may profile usage. ArkWarden has no ads at any tier.
ArkWarden can take a photo or record a video directly inside the app, encrypting it into the vault without ever writing it to the camera roll or Photos library. There is no moment where the file is stored unprotected in your photo library before it is moved. Capture happens directly into the encrypted vault.
Private Photo Vault has a Decoy Password that opens a separate empty view. ArkWarden's Wing is a fully functional second vault with its own name, files, and appearance. Someone who opens Wing sees a real vault with real content. There is no visible indicator that a second vault exists.
Claims about Private Photo Vault are based on their own App Store listing and FAQ. Claims about ArkWarden's encryption are based on published standards.
ArkWarden encrypts every file individually with AES-256-GCM. No account, no ads, no server. Your pattern is the key.
