Information!!!!
As per above discussion and blam on developers unfair
They provide you best freeware
Only mindset at public they want ready to eat
They don't have ability to create such app not able to apply math, nor able to apply brain
How they can use such app
Let me give u 1 more tip
Don't use start to end full bit range
Example
134bit to 135bit don't use
What to use
Split 135bit in parts of 70bit to 100 bits for run kangaroo in between, depand your gpu power
Or
Generate random number in 135 bit range and to set +100 bit for adjust range for checking key
A = 135 random generator
B = a+ 100bit range
Adjust a and b in your kangaroo command
Hope above small tips help you for use kangaroo and such app,
It's also help your mindset of kangaroo 125bit max etc
Enjoy!!!