Serious warnings 2 confirmed warnings. Checked: 400 reviews, the Android app’s code and the store listing.
From our automated analysis, 27 Oct 2026. Every label links to its evidence in the full report below.
This analysis describes version 2.6.3 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-27 .
The store currently lists version 2.6.3, updated 2026-10-19.
Store screenshots supplied by the developer.
【Lock Box】A hidden space disguised as calculator! Provides photo and video hidden encryption, privacy browser, video downloader, app lock, message lock, photo lock, gallery lock
💡【What can I lock for you?】
· Lock photos and videos
· Lock private apps, prevent others from viewing (eg: WhatsApp, Instagram, Facebook, Messenger, Email, Browser, etc.)
· Lock system apps, avoid privacy breaches and malware attacks (eg: phone calls, text messages, contacts, photo albums)
· Lock private Message, Sensitive message notifications
· Prevent others from modifying mobile phone settings, paying for consumption, installing and uninstalling mobile applications…
From the developer’s store description.
For developers and the curious
The evidence, sources, measurements and versions behind every label above.
Findings that met the published evidence standard.
Bundles 3 distinct ad networks / mediation SDKs: Google Mobile Ads (AdMob / Ad Manager), Meta Audience Network, Pangle (ByteDance)
The package embeds several distinct advertising or mediation SDKs — a stack built for ad volume, not for a single house ad.
Package artefact
Appworthy
sha256:a2c85e773e19a32dec4b205b1128933e36b1afca1fc3c7799797a27e56cbb7c9Aggressive ad load: raised by 7 distinct reviewers (about 1 in 57 reviews we read)
Advertising volume or placement that interrupts normal use: ads between every action, unskippable or forced full-screen ads.
Specific evidence of a useful property, within the stated scope.
The developer's store data-safety disclosure states that data deletion can be requested; we have not seen a deletion control in the app's own text
The developer's data-safety disclosure on the store states that users can request deletion of their data, or the app's own text offers a way to delete the account. This restates what the developer declares; it is not a test of whether deletion works. Apple publishes no equivalent disclosure, so on an Apple-only listing only the app's own text can support it.
Open observations that have not cleared the evidence bar.
The app's own text says: "Download"
This observation has not cleared the required evidence standard.
The app's own copy describes working without a connection — offline mode, downloading for offline use, or content saved for later. Shown because readers filter on it; it is a feature, not a fairness property, and never counts for or against an app.
Package artefact
sha256:a2c85e773e19a32dec4b205b1128933e36b1afca1fc3c7799797a27e56cbb7c9The app requests QUERY_ALL_PACKAGES, which lets the app enumerate every other app installed on the device.
This observation has not cleared the required evidence standard.
The app ships session-recording or a wide tracking stack, holds permissions that read personal data, or is reported by users to sell, leak or over-collect it. The evidence line says which of those was observed.
Package artefact
sha256:a2c85e773e19a32dec4b205b1128933e36b1afca1fc3c7799797a27e56cbb7c9The app's own text says: "Premium access required"
This observation has not cleared the required evidence standard.
The core of the app — not extras — sits behind payment, or previously-free function moved behind a paywall.
Package artefact
sha256:a2c85e773e19a32dec4b205b1128933e36b1afca1fc3c7799797a27e56cbb7c9Offers a trial ("Download Now") and states no renewal price, renewal date or auto-renew notice anywhere in the app's own text
This observation has not cleared the required evidence standard.
The app's own screens offer a free trial without stating, beside it, what happens when the trial ends. Read this as context rather than as a charge: renewal terms are normally shown on the store's purchase sheet instead, which we cannot see, and we can only observe one kind of evidence for this — so it is shown, but never counted as a charge.
Package artefact
sha256:a2c85e773e19a32dec4b205b1128933e36b1afca1fc3c7799797a27e56cbb7c9The app's own text says: "Continue as %1$s"
This observation has not cleared the required evidence standard.
The app's own screens offer a way past sign-up — guest access, skipping, or browsing before registering — rather than gating the product behind an account. The store's privacy disclosure is checked alongside it: that disclosure is self-reported, so it corroborates this credit rather than establishing it.
Package artefact
sha256:a2c85e773e19a32dec4b205b1128933e36b1afca1fc3c7799797a27e56cbb7c9400 reviews read for this analysis. Each observation keeps the sample and store it was based on.
like it, just to many ads.
wish there weren't so many commercials, but otherwise a good app.
too many ads. please don't install this garbage
A sampled review illustrates one person’s experience. It does not establish a finding on its own.
“Not assessed” means we could not measure it. It is never a zero and never a pass.
Android package 2.6.3, scanned 27 Oct 2026. These describe that package, not the current store version.
Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured
This analysis describes version 2.6.3 of the app (the version number recorded inside the package we inspected), analyzed 2026-10-27 .
The store currently lists version 2.6.3, updated 2026-10-19.
Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.
No release notes were provided for this version.
photo-lockAssessed 2026-10-27 from 400 user reviews, the app's package and the store listing.
What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.
No itemized purchase list is available for this listing.
This assessment is produced automatically. Five independent signals are read — user reviews, SDKs in the app package, the app's own on-screen text, the app manifest and the store listing — and each candidate finding is filed under the sources that support it.
No charge stands on one kind of evidence — with one published exception. A finding is either a measured fact that anyone can reproduce (an ad SDK is in the package; every subscription bills weekly; the privacy label omits a tracker we can see), or it is an interpretation — and an interpretation needs independent sources to agree before it reaches the catch list. The exception is a harm only users can see: a charge may publish from reviews alone, as “Reported by N users”, once enough reviewers raise it to clear that charge’s own published bar. That agreement rule is what replaced the human reviewer, not a model’s confidence.
There is no overall score, on purpose. A 0–99 number was published here until 2026-09-15. It was withdrawn because it discriminated too weakly to be the instrument — 44.7% of every pair of apps tied — and because a single number is a verdict where a count is an observation. What publishes instead is a row of measurements, each of which says what was counted and, where we could not look, says that instead.
Findings under One source only are real reports we do not stand behind as findings. They are shown because withholding them entirely would hide a genuine complaint, and labelled because publishing them as charges would be an accusation off a single source.
Write to [email protected], or use the form. Name the finding, the app version and the evidence that needs correcting. Factual corrections are free and never depend on buying anything.