OpenRuko could not use Heroku/Logplex because it is not usable outside Heroku.
But things are changing, and if OpenRuko/Logplex API are compatible with Heroku/Logplex API, it could make the transition easier.
The Heroku/Logplex API:
https://github.com/heroku/logplex/blob/master/doc/README.logplex_api.md