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Head-to-head · Photo Vault Apps

Blackbox vs NullVault

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Blackbox #5 in Photo Vault Apps 8.6/10 Free plan Free plan✓ 2 of 4 features Visit Blackbox
NullVault #8 in Photo Vault Apps 8.3/10 Free plan Free plan✓ 3 of 4 features Visit NullVault

Blackbox leads on 0 checks, NullVault on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreBlackbox · 8.6/10
  • Free planboth
  • Most featuresNullVault · 3 of 4

Blackbox scores higher on our rubric for photo vault apps: 8.6 against 8.3 out of 10; our editors rank them #5 and #8.

Blackbox is the better fit for users needing multiple encrypted vaults. NullVault is the better fit for security-focused users on a budget.

  • Blackbox fits best

    Users needing multiple encrypted vaults

  • NullVault fits best

    Security-focused users on a budget

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Side by side

Feature Blackbox 8.6/10 Visit ↗ NullVault 8.3/10 Visit ↗
At a glance
Editor score 8.6 8.3
Ranking #5 in Photo Vault Apps #8 in Photo Vault Apps
Best for Users needing multiple encrypted vaults Security-focused users on a budget
Pricing model Free plan + paid Free plan + paid
Starting price — —
Free plan ✓ ✓
Free trial — —
Deployment Mobile Mobile
Platforms iOS, Android iOS, Android
Support Email Email, Docs
Integrations 3 integrations 1 integrations
Built for Solo, Small business Small business
Features Blackbox 2/4 · NullVault 3/4
Cloud backup ✓ ✓
Decoy vault ✓ ✓
Intruder alerts Not checked yet Not checked yet
Private camera Not checked yet ✓ (best)
Specs
Free vault limit Not checked yet 20 items
Mobile platforms Both Both
Our review
Pros
  • Supports multiple separate vaults and decoy vaults
  • Uses AES-256 local encryption for vault contents
  • Offers iCloud, Google Drive, and Blackbox Cloud support
  • Pattern-addressed hidden vaults with separate decoy vaults
  • Encrypted storage, backups, and recovery phrases
  • Private camera, organization tools, and panic-wipe controls
Cons
  • Free access is limited to PIN-only unlocking
  • The Free plan uses local storage and includes ads
  • No verified intruder alerts or private camera
  • The Free plan is limited to 20 total items
  • Read-only sharing is available on iOS
  • Paid plans add storage-dependent unlimited capacity
Our verdict

Blackbox is a mobile vault for photos, videos, files, and documents on iOS and Android. It is designed for people who want private content separated from a device’s standard gallery, with local encryption, automatic locking, and…

Read the review →

NullVault is a mobile photo and file vault for iPhone and Android. It encrypts photos, videos, documents, files, and notes locally, with separate vaults opened by distinct patterns rather than a visible master list. It suits people who…

Read the review →
  1. BlackboxPhoto Vault Apps 8.6Free plan
  2. NullVaultPhoto Vault Apps 8.3Free plan

Strengths and trade-offs

  • Blackbox — where it wins

    • Supports multiple separate vaults and decoy vaults
    • Uses AES-256 local encryption for vault contents
    • Offers iCloud, Google Drive, and Blackbox Cloud support

    Where it doesn't

    • Free access is limited to PIN-only unlocking
    • The Free plan uses local storage and includes ads
    • No verified intruder alerts or private camera
  • NullVault — where it wins

    • Pattern-addressed hidden vaults with separate decoy vaults
    • Encrypted storage, backups, and recovery phrases
    • Private camera, organization tools, and panic-wipe controls

    Where it doesn't

    • The Free plan is limited to 20 total items
    • Read-only sharing is available on iOS
    • Paid plans add storage-dependent unlimited capacity

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update