How to combine 5V-powered ATmega16A and MAX44009?
This might just be the thing you are looking for: https://www.sparkfun.com/products/12009

Or maybe this might work as well: http://www.hobbytronics.co.uk/logic-level-i2c

The two modules that you have mentioned are both different, the pink module seems to sustain 5v. But to be on the safe side these logic level converters are better than having nothing.