Buy once instead of Kaleidoscope
2 apps in the directory cover what people use Kaleidoscope for. Each one is a one-time purchase.
Kaleidoscope costs about $96 a year. At that rate Beyond Compare 5, the cheapest dollar-priced replacement at $35, pays for itself in 4 months.
Read the catch on each one before you switch — a one-time price is not automatically the better deal, and we say so where it is not.
The replacements
Beyond Compare 5
file and folder comparison you buy once per major version
$35 Paid upgrades
Three-way merge is Pro only, so the $35 Standard edition will not serve as a git merge tool
Sublime Merge
git client that shows you the command it just ran
$99 This version
Updates stop after three years; your version keeps working but newer builds need a paid upgrade