Sematext Logs is ELK as a Service. This library lets you collect mobile analytics and log data from your Android applications using Sematext. There is an equivalent library for shipping logs from iOS available. If you don't have a Sematext account, you can register for free to get your App token. Use the Mobile Application Logs Integration to get out-of-the-box reports with the most important information about your mobile applications.
...It comes with Web interface to search and generate chart accordingly. This project is Open Source project with Apache 2.0 license for allowing you to extra development on top of Log Searcher project. The initial configuration was written on readme.txt before implementation on production line. If you have idea for improvement, you can drop an email to me.
Contact: log.searcher[at]yahoo.com