Good app but eats too much memory

This app is well designed. Over time, it seems that old deleted tasks remains in memory? The app grows and is now the largest I use with more than 250MB for a few dozens of tasks only (text)! May be not a problem with 32MB and over but with 16MB it this. I expect strong improvement in memory consumption.

pvanet about Any.do: To-Do List, Tasks, Calendar & Reminders, v4.0.4