Vault - Hide Pics, App Lock

Review by eFreeware

Most of us keep something on our phones we would rather not have on display, whether that is a scan of an ID document, a folder of family photos or a work chat thread. Handing the phone to a friend to show one picture, or leaving it on a table at a café, exposes all of it. Vault, from Wafer Co., is built to close that gap: it moves private photos and videos behind a password and adds locks around the apps you would least like someone else to open.

It is a free app in the Business category, and it is not a small experiment. The install count sits above 100 million, the average rating is 4.3 from more than 1.28 million ratings, and the app has been on Google Play since December 2011. That kind of history suggests a tool people keep installed rather than try once and abandon, though it also means the app carries the habits of a long-lived product, including ads and in-app purchases.

The pitch is straightforward: one place where private media lives, opened only with the right password, with a few extras layered on top for people who want more than a simple locked folder. What follows is what the developer describes, who I think it fits, and where the trade-offs sit.

How the hidden media folder works

The core of Vault is a private library for photos and videos. Anything you move into it stays out of sight until the right password is typed in, so it sits behind a gate instead of in the ordinary gallery where anyone scrolling through your camera roll would run into it. The developer also offers cloud space for backing that media up, which matters if the phone is lost, wiped or replaced.

Two features give the folder more flexibility than a single locked album. You can create several vaults, each with its own password, and split photos and videos between them, so a work-related set of images need not share a password with personal ones. One of those vaults can be set up as a fake vault, which gives you something plausible to open if someone insists on seeing inside.

Break-in alerts add a monitoring layer. When someone enters the wrong password, the app secretly captures a photo of them along with the time and the PIN that was typed. That is the sort of feature that turns a lock into a record: you learn not just that someone tried, but who and when.

Stealth mode goes further by removing the Vault icon from the home screen entirely. Without that password the app cannot be located at all, which is the closest thing here to making the folder invisible rather than merely locked.

App Lock, private browsing and moving to a new phone

Beyond media, Vault offers App Lock, which protects social apps, photo apps, call logs and telephone apps so that someone picking up your phone cannot wander into them. This is the feature that covers the parts of a phone that a hidden folder does not: conversations, call history and the apps that hold them.

A private browser is included as well, and the developer says browsing through it leaves no traces behind. Private bookmarks are part of the same package, so sites you save are kept in the same private space rather than in a standard browser's bookmark list.

Cloud backup does double duty. Besides protecting photos and videos against loss, the developer describes using it to move data to a new phone through cross-device synchronization. That turns the cloud space into a migration tool as much as a safety net, which is useful at the moment you switch handsets and least want to lose the private material you have accumulated.

Password recovery is handled through a security email. If you set one up in advance, a forgotten password can be reset by following the recovery steps. Reinstalling can restore your data if it was backed up to the cloud and no security email was set.

What the app asks of you

Vault is free to install, and its main features are available without charge. The app contains ads and offers in-app purchases, so the experience includes advertising and there is something to buy inside. Cloud backup for photos and videos requires a premium plan.

The app uses the Device Administrator permission. That is a meaningful permission to grant, and the Android permission dialog deserves a careful read rather than a tap-through on autopilot.

There are also practical requirements that come from how the app stores your media. Vault keeps pictures and videos in its own data folder, and the developer warns that some cleaning or free-storage apps may automatically delete that folder. The guidance is to avoid selecting Vault's data folder and its subfolders when those tools offer to clear space, and to use cloud backup as an extra layer. In other words, the protection is only as good as your willingness to keep other utilities away from it.

Getting back into a hidden vault has its own routine. In stealth mode there are two routes back in: adding a Vault widget to the home screen and tapping it to enter the password, or downloading a separate calculator app from Google Play and typing the password followed by the equals sign. Both work, but both are steps you need to remember before you need them.

Getting the most out of it

The single most useful thing you can do early is set up the security email. Password recovery depends on it, and the fallback, reinstalling and pulling data back from the cloud, only works if you had already backed your media up. Doing both before you need them is the difference between a minor annoyance and losing access to your private library.

Think about how you want to divide your material. Multiple vaults with separate passwords let you keep categories apart, and the fake vault is there for the moment someone asks to see what you are hiding. Deciding which vault is which ahead of time avoids fumbling with passwords in front of an audience.

If you use cleaner apps or storage managers, check their settings before letting them run. Excluding Vault's folder from automatic cleanup is a small habit that prevents the loss the developer warns about. Cloud backup covers the same risk from the other direction, so the two together are more reassuring than either alone.

Finally, consider whether stealth mode suits your routine. Hiding the icon is effective, but it also means you rely on the widget or the calculator trick to get back in. If you would rather not depend on remembering that, keeping the icon visible and relying on the password and App Lock may be the calmer arrangement.

A long-running app with a few strings attached

Vault has been on Google Play since 2011 and has been updated recently, with the latest changes described as general fixes and stability improvements plus support for Android 16. That combination of age and current maintenance is reassuring for a privacy tool, where abandonment would be a real problem. The install base and rating suggest a large number of people have found it workable over the years.

There are ads and in-app purchases, the app asks for Device Administrator permission, and it depends on you protecting its data folder from other cleanup tools. Stealth mode adds a retrieval step that you have to remember. None of these are hidden, but they are part of the deal.

The feature set is also specific rather than broad. Vault is about locking media, locking apps, private browsing and backing up to the cloud. It is not trying to be a general security suite, and it stays within those boundaries.

A fit for shared phones and private folders

I would point Vault at people who need a locked space on a phone that others sometimes handle: a shared family device, a phone passed around to show photos, or a handset used for both work and personal life. The combination of a password-protected media library, App Lock and break-in alerts covers the situations where a normal gallery and a screen lock are not enough.

It also suits anyone who wants their private photos backed up off the device and easy to move to a new phone, since cloud backup and cross-device synchronization do that work. The cost of entry is low, with the main price being ads and the discipline of keeping cleaner apps away from Vault's folder.

If your needs are narrower, say a single locked album with nothing else attached, Vault offers considerably more than that, and the extra features are what you are accepting along with the ads and permissions. For the audience it is built for, though, it is a well-established option with a clear purpose and a long track record.

What's new in version 6.9.13.22.22

General fixes and stability improvements. Added support for Android 16