"Thank you very much… Ralf Kiefner… for this really first class app about whales and dolphins!! Your book „Whales and Dolphins, guide of the world“ has been my favourite book for 14 years!!! And now there is Whaleguide App!!! Amazing!!! Thank you very much… I have learned so much about whales from you!!!!!"
"… Super. I personally like the easy navigation most. Great."