Got it for free as I already had Swiftkey X from previous Amazon FAOTD.
When I check running applications, it shows up 69 MB is being used just for this keyboard app. Is it supposed to be this big?
I was using a Korean keyboard that uses only 8 MB instead of the default Samsung keyboard on my Note takes about 20MB and thought that was too big for a keyboard.
mine is at 58mb, but I wouldnt look too much into it. It does have a strong prediction engine and other features that take up memory. As long as youre not running a 4 year old phone, you should be fine on ram