Mobile analytics firm Distimo has published a report comparing Google’s Android Market app store with Amazon’s separate Appstore for Android. It notes that the latter is picking up steam, with developers starting to make decent money.

“Of all the applications that are available in both stores, 110 applications generated at least $200 each day in one of the stores during the last week of January,” notes Distimo.

“42 of these applications generated more revenue in the Amazon Appstore than in Google Android Market. Of the total income these 110 applications generated in both stores, 28% was generated in the Amazon Appstore.”

The report also outlines a big difference between the two stores: only 32% of apps in Android Market are paid, whereas 65% are in Amazon’s Appstore.