Well I believe finnish is not as defined as german, what's up with all these random 'ä'? When you say "kyntillä" out loud, the last character sounds more like an 'a' than an 'ä'
The thing that makes Finnish alphabet very easy, is that every character corresponds to one sound (with the exception of "c", which can be either "k" or "s", but it isn't actually used in Finnish (it just exists for legacy and compatibility with Swedish)) and vice versa (with the exceptions of "w=v" and "å=o", but, again, they're not used in Finnish)
That is, a character will always sound the same, regardless of what is around it. There are no silent letters. No things like "ea -> ee" or "ph -> f" (if you write two different characters, you also pronounce two different sounds). No single vowels that randomly became long vowels (like English "ski -> skee" rather than "sky").
This sound, to my knowledge, doesn't exist in Standard German.