Hilia: Hide Files in Photos

TYO Lab

Contains adsIn-app purchases

About this app

Hilia hides your secrets in plain sight. Text, files, or photos vanish inside an ordinary-looking picture — real steganography, not just a locked folder. 100% offline. No account needed. Your data never leaves your phone.

WHAT YOU CAN DO
• Hide secret text, a document, or a photo inside any cover photo — invisible to anyone but you
• Reveal hidden secrets instantly from any stego image you receive
• Store everything in a private, encrypted on-device vault
• Scatter hidden photos into your regular gallery instead of a separate album, so they blend in as just another photo

STEGANOGRAPHY — HIDING IN PLAIN SIGHT
Encryption protects your data but leaves obvious traces; steganography hides the very fact that a secret exists. Hilia weaves your data directly into a photo's pixels, choosing the best-quality method for full detail or an extra-stealth method that keeps a camera photo exactly as it is. The result opens and looks like any normal photo — because it is one.

PRIVACY BY DESIGN
• Fully offline — hide and reveal without an account or sign-up
• Nothing is uploaded — we don't collect or see your data
• Revealed secrets auto-blank the moment you switch apps, banking-app style
• Optional passcode plus strong encryption layered on top of the hiding itself

DECOY VAULT — YOUR SAFETY NET
If someone ever forces you to unlock your phone, you shouldn't have to hand over your real secrets. Set up a second, decoy vault with its own passcode — it looks and behaves exactly like your real vault, but only shows what you choose to keep in it. Open the decoy passcode and that's all anyone sees; your real vault stays hidden and untouched.
• Two vaults, two passcodes — the decoy is indistinguishable from the real one until you decide otherwise
• Built for real-world situations: border checks, a stolen or seized phone, or anyone pressuring you to unlock

FREE FOR EVERYONE
• Hilia's full hide-and-reveal experience is free, with no account and no paywall
• Free use is supported by ads; an optional Gold membership removes ads and adds extra perks

WHO USES HILIA
• Anyone who wants to keep something truly private, on their own device
• People passing sensitive information discreetly
• Privacy-conscious users avoiding cloud photo scanning of what they hide
• Or just for fun — send a friend a photo and see if they can spot the secret inside

GET STARTED
Download Hilia and hide your first secret in under a minute — no account, no cloud, no catch.

GOOD TO KNOW
• Look for the app named "Hilia" on your device
• Share the original file — chat apps that recompress or resize images can destroy hidden data
• Vault data is removed if you uninstall the app
• Hilia is a privacy tool: please use it responsibly and lawfully