Karl Jeffery Published Applications :

The definitive collectors guide for the video-game system that changed the world - the Atari 2600/VCS.

(Please note - this is not an official Atari product and is not endorsed or supported...
Neo Geo Collectors Guide was removed
Number 1 soundboard on the UK Store in April 2011!!
Kkkkkraaazy soundboard featuring everyone's favourite Pet Detective, Ace Ventura, and now with added 'Mask'!!
All the best lines from the...
**Please note - this is NOT an official Nintendo product and is not endorsed by or affiliated with them in any way**

The latest in a series of applications for video-games collectors,...
**Please note - this is NOT an official Nintendo product and is not endorsed by or affiliated with them in any way**

The ultimate guide to possibly the greatest console of them all, the...
Neo Geo - the Guide was removed
**Please note - this is NOT an official Nintendo product and is not endorsed by or affiliated with them in any way**

Collectors guide for the console that saved the video-game...
**Please note - this is NOT an official Nintendo product and is not endorsed by or affiliated with them in any way**

Collection tracking
Make your own notes for each...
The definitive collectors guide for the Atari 5200 system.

*Please note - this guide is not affiliated with or endorsed by Atari Inc.*
Now free! This comprehensive guide features the...
The definitive collectors guide for the Atari 7800 game system!

*Please note - this app is not affiliated with or supported by Atari Inc.*
Featuring the following:
Collection...
The definitive video-game collectors guide for the Atari Jaguar!
*Please note - this guide is not endorsed or supported by Atari Inc.*
Features the following:
Collection tracking at the...
The definitive Collectors Guide for the Atari Lynx!!
* Please note - this guide is not endorsed or supported by Atari Inc. *
Features:
A handy application for collectors of Atari's last...
** Please note - this is NOT an official Nintendo product and is not endorsed or affiliated with them in any way**

The fourteenth in a series of applications for video-games collectors,...
Collectors guide for fans of Mattels Intellivision console of the 1980's.
Features:
Track the games you own by just tapping the row
Add your own notes for each game - track whether you...
Collectors guide for fans of NEC's TurboGrafx 16/PC Engine console.
Features:
Over 320 games listed
Simple to use system to keep track of your collection by just tapping the...
Let's face it, your boss works you too hard! Why not waste some time and stick it to 'The Man' by working out how much cash you are making whilst just chillin' or hanging in the...
Collection tracking at the touch of a button
Add your own notes for each game
Screenshot
Box scan
Cartridge scans
Value and rarity details
ebay search link
The sixth in...
High-quality wallpapers for the dedicated retro-gamer!
50 nostalgic screenshots, optimised for the 'Retina' screen, that showcase your love for a time when games were GAMES!
This first...
Collectors Guide for Atari's answer to the NES!
Features, all in a single-screen, so easy to use (no navigating backwards and forwards to find the info you need):
Full game-list including...
Collectors guide for Atari's handheld wonder, the Lynx.
Features:
Gamelist of over 100 games, including commercial, homebrew and prototype.
Preview image for each game.
Details of...
Essential guide for all fans of the Atari 2600/VCS, and retro-gaming in general!
Relive one of the most historic consoles ever produced and remind yourself that gaming was once about fun, not...
Collectors Guide for the 'lost' Atari - the 5200!
Released between the hugely successful 2600/VCS and 'not good but better than the 5200' 7800, the 5200 still has a good library of games, many...
The ultimate guide to the first 64-bit console, the Atari Jaguar
Features over 60 commercial releases, ranging from outright classics to horrors that you hoped to never see again, essential for...
The ultimate guide to one of the most under-rated consoles of them all, CBS' ColecoVision!
Features:
a game list of all commercial releases, as well as a number of 'homebrew' games,...
Remember when games were fun and not just about flashy graphics?
Well show your love for the 'good old days' of arcade gaming by decorating your iPad with these lovely images - over 100...