ToDo list, with SPECIFIC repeat option

I'm looking for a simple to-do list, that preferably is cloud-synced. I'd like something with a relatively light-weight, simple interface, similar to Any.Do or #fetchnotes. I was using [CheckMark Pro](https://play.google.com/store/apps/details?id=com.greenbeansoft.Checkmark) , but it is really WAY overkill for what I want. My biggest criteria is that I want to be able to set a task to repeat, some interval **from the date it is completed**. Most of them let you repeat every 6 months or 2 weeks or whatever, from the due date. But take this example: Task with due date of 5/30. Task set to repeat every 6 months from completion. I *complete* the task, marking it done, on 5/13. The next occurrence should now repeat 6 months from 5/13 (the completion date), not from 5/30 (the original due date). And of course whatever reminder is set (2 weeks for example) should be relative to the new due date, 5/13 in the example above. Most of the one's I've looked at either are not cloud-synced. And I've not found any others than CheckMark Pro that allow the next occurrence to repeat based on COMPLETION date rather than DUE date.