Thunder/lightning sound very dull sound – Sleep Sounds by Sleep Pillow Review

Thunder/lightning sound poorly recorded. I hope you fix this and also you can only mix 3 sounds? unlike the one I use on my android I can mixed 10 with volume control on each and the thunder sound is very natural. (My favorite combination sleeping sounds are the following - heavy rain, THUNDER, frog, cricket, water fall.
Review by Very UPSET member on Sleep Sounds by Sleep Pillow.