iPhone Screenshots


Essential equipment for the Secret Agent you always wanted to be!

This futuristic, yet strangely retro technology allows you to break the secret codes supplied in the 1960s Sci-Fi comic "TV Century 21".

The original issue of the comic on January 23rd 1965 came with a functionally identical code-breaker but, almost 50 years later they are a rare beast indeed and possibly chewed and mouldy as they were made of thin card and paper. So, if you have some old copies of the magazine (and you can buy them online!) and you've been yearning to know what those secret messages at the foot of the pages were then this is just the app you've been looking for!

If you were feeling mischievous you could of course encode your own messages to surprise your friends on Twitter. :-)

*) Supports Red and Blue codes
*) Supports encoding and decoding of messages
*) Copy and paste
*) Shake to clear
*) Exciting futuristic, retro look, feel and sounds
*) Escapist fun and silliness
*) Optimised for 64-bit devices

What's New

Version 1.4

• Text fields now make full use of the device’s screen.
• iPhone 4s users now get the Black Tablet button too!
• Sharing or copying encoded text now tags it with the type of encoding and applies it automatically when pasted in someone else’s Identicode app.
• ‘Convert’ button is unavailable until keyboard is dismissed.
• Tapping “IDENTICODE” shows the app’s version number.
• Encode, rather than decode is now selected at launch time.
• Improved VoiceOver support.
• Broken green bulbs replaced with purple.
• Small bug fixes.

Ratings and Reviews

Century21 Secret Agent

Sitting by the fire

If you were a fan of Century21 comics (Thunderbirds, Stingray, Fireball XL5 and all the Gerry and Sylvia Anderson productions) then you'll love this little app. The design is true to the spirit of 1960s sci-fi puppetry.
The comics used to have secret messages in code, which you could only decipher if you had the key.
This little app does it all for you. Write your message and it will translate it into blue or red code and back again. Use it if you don't want people prying on your emails (of course the person you're sending to will need IdentiCode too) or if you really are a secret agent. Shh ...

Developer Response

Thanks for such kinds words and glad you like the style.


Stephen Watson
6.9 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.
Age Rating
Rated 4+
© Stephen Watson


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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