I'm Simon Haynes. programmer and author.
Welcome to
Spacejock Software

My free software includes

FCharts 2
RMP3
TrackAMinute2
yCopy2
yEdit2
yPlay2
yRead3
yTimer2
yWriter6



What do I write?

The Hal Spacejock Series (Teen/Adult)


READ FREE!












New Release!


H2 2018



yBook2
by Spacejock Software
WinXP & above / Mono 2.4 & above


Upgrade an installed version of yBook2

This installer will upgrade your version of yBook2 to 2.0.1.2, dated 28/May/2012

• It doesn't matter whether you run the same installer more than once.
• Installing or upgrading yBook2 will not delete or overwrite your data OR your settings.
• There is no need to uninstall yBook2 before running this updater.
See below for the list of changes


yBook2 is free to download and use, but you're encouraged to register your copy if you find it useful.

Update Instructions


Download and run yBook2Upd.exe (830kb) to update your copy of yBook2 to the latest release version. (Please make sure yBook2 isn't running while you're trying to update it!)

Change Log:
If the version number next to an item is newer than 2.0.1.2, that change is in the latest beta