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Pictograph - Steganography

Pictograph - Steganography

Hide Messages in Plain Sight

171 ratings
12 reviews
🔧 Utilities
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Archived App (Last seen on 10 Apr 2026)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • November 9, 2015
  • October 11, 2017

Features

Developer

Adam Boyd
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⭐12
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❓5 answered
FAQ↘︎
📦w/o updates
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About

This app allows you to hide messages and images within other images, making them invisible to the naked eye. It utilizes steganography by subtly altering pixel data, ensuring your communications remain private and secure.

✓Hide messages in images
✓Hide images in images
✓Steganography technique
✓Imperceptible pixel changes
✓AES-256 encryption
Show original description

What's New in Pictograph

1.6

October 11, 2017

This app has been updated by Apple to display the Apple Watch app icon. Big update! Now with this version, you can hide images and pictures within the same image! So no need to send two different images if you want to include both a message and an image.

More

User reviews

Most RecentHighest RatedLowest Rated

Works fine but limited

When decoding a message that is 60+ characters, only the first 50-ish characters are shown.
Also, there doesn't appear to be a way to cut/copy the decoded message text to be able to paste it into another app.
Mr E SolverMr E Solver

Error

I wanted this to work but it comes back with an error each time. Same thing happens with my friend.
yourflyisdownyourflyisdown

Doesn’t work

Doesn’t work
Allan's SongAllan's Song

Aaa

Ccc
RiotesoRioteso

Need instructions

Can’t figure out how the receiver knows I sent a message. Can’t figure out how the receiver inputs the password.

Those gaping holes make the program less useful than it might otherwise be.
No.madNo.mad
See 7 more reviews

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FAQ

What is steganography and how does this app use it?

Steganography is the art of hiding messages in plain sight. This app uses it by subtly altering the least significant bits of pixels in an image. These changes are so minor that they are imperceptible to the human eye, effectively hiding your message within the carrier image.

Can I encrypt my hidden messages?

Yes, the app supports AES-256 encryption when enabled. This is a strong encryption standard that makes your hidden messages incredibly difficult to break, ensuring a high level of security for your communications.

Is this app free to use?

Based on the provided information, the app is free to use and does not appear to have in-app purchases or advertisements.

What devices is this app compatible with?

The application is available for iOS devices.

What are some common use cases for this app?

This app is useful for sending sensitive information discreetly, sharing private messages without leaving a trace, or protecting confidential images by embedding them within other visual content.