The problem with other logcat viewers is that the Android log window is only ~50k, so it can hold as little as several minutes worth of logs.
aLogrec allows the Android log (logcat) to be recorded continuously, and infinitely to your SD card where it can be analyzed at a later time.
WARNING: this app will increase battery usage when enabled. It should be used only for development / troubleshooting purposes.
For real-time log viewing on your device, use the application aLogcat,
To view logs offline on your PC, check out the Android Logcat Viewer project on Google Code,
Best full-time logcat you can install. Highly Recommended
Clean, simple, reliable. It would be even better if there was an option to record to external storage.