Good function and control, a few bugs

The degree of control is wonderful: can set audible alarms or not, can set it to take photos at defined intervals during a motion event or to shoot video, and can set where and what quality pictures are recorded. Sensitivity is controllable too, of course.
Theres a small visual indicator showing when it would be tripped if it were currently recording, to assist in setting the motion threshold. This is very helpful, but is tiny and making the button larger would be much better.
The app does crash and act oddly at times; its not Apple-solid. I got a useful sequence of 35 photos, then it shut down. Another time, the entire screen "irised" when taking photos.
For free, its worth it. I would glady pay for a more stable version, however; I have come to value my time more highly than a few dollars.

walkranrunning about iSentry Legacy