Compare
VaultWell vs calculator vault apps
Many vault apps hide behind a working calculator. How that approach compares with VaultWell, and what to check in any vault app.
Written as of October 2026 from general, well-known behaviour of this category rather than any single app. Built-in features change with system updates, so check their current docs before deciding. If something here is out of date, we want to fix it.
At a glance
| Question | VaultWell | Typical calculator vault app |
|---|---|---|
| Disguise | Optional icon: Calculator, Printer or Compass | Usually a working calculator that opens the vault with a code |
| Unlock | A path on the comb | Usually a numeric code typed into the calculator |
| Encryption | Argon2id, hardware-bound keys, AES-GCM | Varies widely; check each app |
| Account | None | Varies; some need one |
| Several hidden vaults | Yes | Some offer a decoy vault |
| Cloud sync | No, not today | Some offer it, often as a paid option |
The idea
Calculator vault apps look and work like a calculator. Typing a secret code and pressing equals opens a hidden vault. The disguise is the whole point, and some do it very well.
Because this is a broad category with many apps from many developers, we can't speak for any single one. What follows are general differences and questions worth asking of any vault app, including ours.
Where VaultWell is different
- The disguise is optional. VaultWell offers a Calculator icon, but it doesn't pretend to be a working calculator. Its lock screen is a plain honeycomb that gives nothing away.
- A path instead of a number. Short numeric codes are quick to type, but there are fewer of them to guess. A path of eight or more cells on the comb, stretched with Argon2id and bound to your phone's hardware, is designed to make guessing slow.
- No account, nothing sent to us.
- Clear about limits. We publish what we protect against and what we don't on the security page.
Where some calculator vaults are better
- A fully working calculator is a more convincing disguise if someone actually opens the app.
- Some offer cloud sync or backup to an online account. VaultWell doesn't today.
- Some can hide other apps or browse the web privately. VaultWell focuses on photos, videos, files and notes.
Questions to ask any vault app
- Are files actually encrypted, or just hidden in another folder?
- What turns my code into a key, and how slow is guessing?
- Do I need an account, and what is sent to the developer?
- What happens if I forget my code? If the developer can reset it, they may have access.
- How do I move to a new phone?
- Has it been independently audited? (VaultWell: an audit is planned, not done yet.)