Calculator Vault Apps: What the Disguise Does and Doesn't Hide

A calculator vault app is a photo and video vault that looks like a calculator on your Home Screen. You type a code into the calculator keypad and the vault opens instead of showing a sum. The disguise only helps against someone glancing at your Home Screen. It does nothing about how the files are stored, which is the part that decides whether your photos are actually safe.

This guide explains what the disguise covers and where it stops, lists the questions worth asking about any vault app before you move photos into it, and covers what iOS already does without an extra app. It does not name or rate any specific app.

What a calculator vault app is

Two ideas are bundled together in this kind of app.

1. A vault. The app keeps photos and videos in its own storage, outside your Photos library, behind its own lock.
2. A disguise. The app’s icon and name look like a calculator, and the lock screen is a working keypad. The secret code you type is the passcode.

The vault half is useful on its own. A photo stored in a vault app is not in your Photos library, your widgets or your shared albums. The disguise half is cosmetic. It changes what the app looks like, not how it protects data.

What the disguise protects against

The disguise works when someone scrolls through your Home Screen, or hands your phone back and forth, and sees an app with a calculator icon. A calculator is boring, so they move on. If that is the only risk you are worried about, the disguise does its job.

What the disguise does not protect against

It stops working once someone looks for hidden things on purpose, or looks in places other than the Home Screen.

• Two calculators. iPhone ships with its own Calculator app. A second calculator on the same phone raises the question the disguise was meant to avoid.
• Other places apps are listed. Apple’s personal safety guide says that even apps you hide stay visible in a few places, including Settings > Screen Time and App Store purchase history. Apple lists those for hidden apps. A disguised app is not hidden at all, so it can show up in the same lists under whatever name and icon it uses, and the App Store purchase history shows what you downloaded and when.
• Someone who knows the trick. Calculator vaults are a well-known category. A person who suspects one can open every calculator-looking app and try.
• The passcode on your phone. The disguise is an extra lock on top of the vault. It does not replace the question of who can unlock your iPhone.
• Forgetting the code. A disguise adds a second thing to forget. If the only entry is a keypad that behaves like a calculator, you may not remember which app it was a year from now.

Concealment is a different thing from protection. Concealment makes a file harder to notice. Protection means that someone who finds the file still cannot read it. A calculator icon gives you the first and says nothing about the second.

Questions to ask before trusting any vault app

Whatever the icon looks like, these questions apply. Most can be answered from the app’s own description, privacy page or support pages. If a vendor does not answer one of them in plain words, treat that as an answer.

Are the files actually encrypted?

Look for a statement of what is encrypted, how, and where. “Password protected” and “locked” can mean only that the app asks for a code before showing a screen, with the files sitting readable in storage. A vendor that does encrypt will usually name the cipher. Be wary of vague phrases like “military grade”.

What happens if you forget the code?

If the files are encrypted with a key derived from your code, the vendor often cannot reset it, and that is how it should work. The app should then say what the recovery path is, such as a recovery phrase you write down. If there is no recovery path, one forgotten code can lose every photo. The photo vault recovery guide covers this in more detail.

Can you export everything?

You should be able to get all your photos and videos back out into Photos or Files, at any time, without paying and without a trial running down. Check whether export is free before you put a thousand photos in. A vault that holds your files until you subscribe is a lock-in, not a vault.

Is there a backup you control?

A vault that lives only on one phone is lost with that phone. Ask where backups go. A backup to your own iCloud account is one you control. A backup to the vendor’s servers means your files are held by someone else, and the question about encryption comes back with extra weight.

Does it need an account?

An account usually means your email and, often, your files on a server. If you want a vault that does not know who you are, look for an app that works with no sign-up and says what data it collects. Read the privacy details on the App Store page too, since they are filled in by the developer.

What does the free version limit?

Free tiers often cap how much you can store. Know the cap before you fill the vault.

What iOS already does

You may not need another app. These are the built-in options, each with a limit, and all of them come from Apple’s own pages.

• The Hidden album. Apple says hidden photos leave the Library, other albums and the Photos widget, and in iOS 16 and later the Hidden album is locked by default. Anyone who knows your passcode can open it. See what the Hidden album protects.
• Hide or lock an app. In iOS 18 you can lock an app behind Face ID, Touch ID or your passcode, or hide it so it moves to the Hidden folder in App Library. Apple’s instructions cover both. As noted above, hidden apps still appear in Screen Time and purchase history.
• Locked notes. A note can be locked with a password, Face ID or Touch ID, and Apple says notes you lock are end-to-end encrypted in iCloud. They do not take video. The guide to locking photos on iPhone has the steps and limits.

For an overview of all of them, see how to hide photos on iPhone and how to make a private photo album.

Do you want a disguise at all?

Ask who you are hiding from. A disguise suits a situation where a person sees your Home Screen but has no reason to dig. Where someone might hold your phone and look on purpose, what matters is whether the files are encrypted, how you open the vault, and whether the vault’s contents are listed anywhere.

How Forevault compares

Forevault does not disguise itself as a calculator. Instead it relies on encryption plus vaults the lock screen never lists. Files are encrypted on the device with AES-256-GCM. You open it with a pattern on a 5×5 grid, a passcode or a password, and Face ID is optional. You can have separate vaults for different patterns, and the lock screen does not list them, so someone who watches you unlock one vault does not learn that others exist. There is a 12-word recovery phrase, and an encrypted backup to your own iCloud with “Test a restore”. Export to Photos or Files is always free. There is no account and no data is collected. The free tier holds 100 photos, 10 videos and 3 vaults.

It protects against someone holding your phone, not forensic analysis. See the support page for how backup and restore work. Download Forevault on the App Store.

Frequently asked questions

What is a calculator vault app?

It is a photo and video vault whose icon and lock screen look like a calculator. You enter a secret code on the keypad to open the vault. The disguise changes how the app looks, while the vault half stores your files in the app instead of your Photos library.

Is a calculator vault app safe?

That depends on how it stores your files, which the disguise does not tell you. Check whether the files are encrypted, what happens if you forget the code, whether you can export everything for free, and whether there is a backup you control.

Will a calculator app show up in App Store purchase history?

Apple’s personal safety guide says hidden apps remain visible in places including Settings > Screen Time and App Store purchase history. A disguised app is installed like any other, so assume its download is recorded there under its real name.

Can I hide photos on iPhone without an extra app?

Yes. Use the Hidden album, which is locked by default in iOS 16 and later, or a locked note. In iOS 18 you can also lock or hide apps. Each one has limits, listed above.

What if I forget the code to a vault app?

It depends on the app. If files are encrypted with a key tied to your code, the developer may not be able to reset it. Look for a recovery phrase or a backup you control before you store anything you cannot replace.