Is there any rules engine(cheap or free) known to work in android

We are looking for a rules engine(si开发者_StackOverflow中文版milar to CLIPS,JESS) which works on android. It should not require us to do any source code modification.

Checkout HeaRTDroid: https://bitbucket.org/sbobek/heartdroid/wiki/Home

It is a rule engine designed for Android. It supports integration with android apps via callbacks based on Java reflection and easy tonise uncertainty handling mechanism

No first-hand experience, but maybe this helps...

Should be possible with CLIPS:

CLIPS is written in C for portability and speed and has been installed on many different operating systems without code changes. [...] CLIPS can be ported to any system which has an ANSI compliant C or C++ compiler.

JESS is written in Java, can already be embedded into applications and doesn't seem to mention any additional dependencies. So I'd expect that to work without modification as well.

There's a response on the Jess mailing list related to this topic: http://www.mail-archive.com/jess-users@sandia.gov/msg11715.html. According to the response, it's not possible to run an unmodified version of Jess on Android.

Check Andrmate the high performance rule engine for Android.