Feature comparison
13 features compared. Every row is shown below. On a small screen, scroll the table sideways to compare both apps.
| Feature | NullVault | LockMyPix |
|---|---|---|
| On-device file encryption | AES-256-GCM authenticated encryption for managed vault data. N1 | AES-CTR 256-bit documented for local vault protection. 12 |
| Account required | No NullVault account for local use; Apple account for optional iCloud features. N2 | Local PIN, password or pattern; recovery email or offline alternative password. 2 |
| Cloud upload by default | No automatic cloud archive required for local use; iOS backup is optional. N2 | Cloud backup is activated in Settings; Google Drive on Android, iCloud on iOS. 3 |
| Calculator-style disguise | No working calculator launcher advertised; iOS Pro offers alternate icons. N3 | Disguise mode can mask the app as a calculator or another app; not a claim of a functioning calculator. 1 |
| Decoy / second vault | Yes. A separate pattern opens an independent vault with benign content. N4 | Yes. Premium Fake Vault presents a separate collection. 4 |
| Intruder log | Not listed among the released NullVault features. N4 | Yes. Premium Intruder Detection takes selfies after attempted access. 4 |
| Pattern lock | Yes. A 5×5 pattern unlocks the matching vault’s random master key. N1 | Yes. Password, PIN, pattern and supported biometrics are advertised. 12 |
| Key derivation | Memory-hard Argon2id pattern processing on iOS and Android. N1 | KDF parameters not specified in the cited setup documentation. 2 |
| File shredder | No multi-pass flash-erasure guarantee. Android panic wipe removes a required key; iOS duress removes local vault references. N4 | Premium advertises Shredder for imported source files; physical flash erasure is not independently verified here. 4 |
| Ads inside the app | No ad-supported tier advertised; personal data is not used for advertising. N2 | Premium removes ads. 4 |
| Free tier | iOS: 5 vaults, 20 total items, one collection per vault; encrypted backup included. Android terms are separate. N3 | Base app with paid advanced features; the cited help does not specify a fixed item allowance. 4 |
| Paid plans | iOS Pro: monthly, annual and lifetime; current amount shown by the store. N3 | Premium through the platform store; confirm the current term and regional price. 4 |
| Cross-platform | iPhone and Android. Platform availability does not imply automatic cross-platform sync. N4 | iOS and Android; vendor documents backup-file transfer between them. 13 |
Sources are linked below. “Not documented” means the cited material does not establish that detail; it is not proof that a feature is absent. Platform and plan differences are stated in the cells.
Two dedicated encrypted vaults
LockMyPix describes encryption for imported media and documents, along with folders and subfolders. NullVault groups media, files and notes inside independent vaults addressed by different patterns. The choice is partly about how you prefer to organize the archive.
Encryption claims deserve precise wording
LockMyPix explicitly names AES-CTR. NullVault documents AES-256-GCM in its security architecture. These are different modes, but the mode name alone is not a complete assessment of an app’s authentication, key management or recovery design. We have not independently audited either implementation.
A fake vault and a separate pattern
LockMyPix advertises a Fake Vault and app disguise options. NullVault’s separate patterns open separate encrypted spaces without a master vault picker. Check the exact app version before relying on a disguise. Neither approach guarantees protection when someone can observe your unlock or control the device.
Storage flexibility may decide it
LockMyPix advertises moving a vault to an SD card, which is relevant to compatible Android devices. Do not assume an Android storage feature also exists on iPhone. NullVault’s backup paths are encrypted iCloud backup on iOS and portable encrypted files on Android.
Test recovery before choosing
The LockMyPix product page is useful for feature discovery, but does not settle all recovery details. Its help documents restoring cloud or file backups with the original password. Confirm that procedure for your edition. With NullVault, retain both the appropriate phrase and surviving encrypted data; an Android same-device recovery phrase is not a portable backup credential.
Intruder detection and the source-file shredder
LockMyPix’s Premium documentation includes intruder selfies, Fake Vault, disguise mode and a Shredder for imported source files. These are real advertised features and belong in the table. NullVault does not advertise an intruder camera or multi-pass file shredder. Its destructive controls concern local keys and vault references, and explicitly avoid promising physical erasure of every flash-storage copy.
Cloud and offline backup choices
LockMyPix documents encrypted Google Drive backup on Android, iCloud backup on iOS, and encrypted backup files. Its help also describes using a backup file to move between platforms. Restore uses the original password and the correct backup destination. NullVault has its own backup formats and platform-specific phrases; do not assume that either product can import the other’s encrypted backup.
Price and what you get
Compare the offer on your own device, including renewal period, storage limits and backup features. NullVault’s pricing page separates iOS and Android tiers. LockMyPix has its own store offer; we do not turn region-dependent prices into a universal savings claim.
When LockMyPix is the better fit
LockMyPix may be the better fit if its Android SD-card storage, folder hierarchy or available disguise options solve a specific problem for you. Confirm that the feature is included on your device and plan.
Our verdict
Choose NullVault for independently addressed vaults, notes beside private files, and documented platform-specific recovery. Consider LockMyPix for its advertised folder hierarchy, disguise options and Android SD-card storage. Start with a small, harmless collection and test the complete backup-and-restore path before moving important originals.
Switching to NullVault
- Export a small sample from LockMyPix and check that the original quality and file types are preserved.
- Import into a NullVault vault, lock it, and verify that the intended pattern opens the correct collection.
- Follow the backup instructions for your platform and test recovery using non-sensitive data.
- Keep the source archive until the new copy and recovery path are verified. Review gallery originals, Recently Deleted, shared albums and cloud copies separately.
Frequently asked questions
Does LockMyPix publish its encryption mode?
Yes. Its official product page names AES-CTR. This comparison does not treat missing implementation details as proof that a feature is absent.
Does NullVault require an account?
No NullVault account is required for local use. Optional iCloud features use Apple’s services; account-free local storage does not mean every backup destination is account-free.
Can a recovery phrase restore files after I lose my phone?
Only when the matching encrypted backup data survives. On Android, the same-device recovery phrase cannot restore a portable backup; that backup has its own phrase. See recovery scope.
Can I move my existing backup directly into NullVault?
Do not assume backup formats are compatible. Export supported original files from the source app, import them into NullVault, then create and verify a NullVault backup.
Does LockMyPix have an intruder camera?
Yes. Premium documentation includes automatic intruder selfies. This feature should not be marked absent just because it is missing from another comparison.
Can LockMyPix make an offline backup?
Yes. Its help describes an encrypted backup file as well as Google Drive backup on Android and iCloud backup on iOS. Retain the original password and test restore.
Does a paid plan remove the security limitations?
No. Paying may change feature access or capacity, but it does not protect an observed unlock, a compromised operating system, or a copy already exported outside the vault.
Sources and review
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N1. NullVault security architecture and security references.
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LockMyPix: official product documentation — reviewed 13 September 2026.
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NullVault backup, recovery and pricing.
Published by the TAD team at Think Aloud Design. This compares documented behavior, not a hands-on security test or independent audit. There are no affiliate rankings or paid placements. Send a correction if a product has changed.