Head-to-head · Photo Vault Apps
Blackbox vs 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, 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 |
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| Cons |
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| 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 → |
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
- Blackbox8.6/10 · Free plan
A flexible mobile vault with decoy storage, multiple vaults, and cloud backup options.
Visit BlackboxFull verdict → - NullVault8.3/10 · Free plan
A budget-friendly mobile vault with hidden patterns, decoys, backups, and panic controls.
Visit NullVaultFull verdict →
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- GalleryVault vs Blackbox
- GalleryVault vs NullVault
All photo vault apps comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update




