Aldiko for Android test results
In general, it almost support Hebrew properly...
Most of the text is being displayed properly, the text is aligned to the right and is readable.
The only problem I found is with punctuation marks. Every line that includes even a single word with a punctuation mark is displayed from left to right (the whole line) which makes the text unreadable.
I like this application and would be happy to use it. However, this problem makes it unusable for the Hebrew readers.
Attached are screen captures.
pic1 includes a song with punctuation marks. All the text is right to left and not readable at all.

pic3 includes a text with no punctuation marks. All looks perfect.

pic4 includes a single word with punctuation mark witch make the relevant line (the last one) non readable. pic7 has the same issue with lines 5 and 6.