There's simpel-fonetik, which is extremely intuitive. It's basically a mapping from IPA to latin letters. Example:
When you read Simpel-Fonetik words, you must pay attention to each letter. Remember: each letter has always the same sound, the sound given in the Simpel-Fonetik alphabet, regardless what letter is next to it.
And here it is re-written in Simpel-Fonetik:
Wen ju riid Simpel-Fonetik wörds, ju mast pei ätenshon tu iitsh leter. Rimember: iitsh leter häs olweis the seim saund, the saund given in the Simpel-Fonetik alfabet, rigaardles wat leter is nekst tu it.