DCircuit Lab HD for Android

This app is awkward and non-intuitive. I could not figure out the UI without first watching some (poorly made) video tutorials. The tutorials were almost as painful to watch as this app is to use. Separate and distinct from its awkwardness, it crashes frequently. I don't enjoy writing negative reviews, but neither do I enjoy spending several dollars for an app that makes me feel ripped off and angry. If this app is, at some later date, vastly improved, I'd be glad to re-review it. Until then, this uninspired app gets a big thumbs down.

Not easy to use, Tried it with a know working circuit and it did not work. I only got 1 out of three try's to work, but then the app crashed.

The graph button crashes it everytime.

Very nice tutorials built in. Easy to create and run circuits, although clock/output seems to be slightly glitchy. Gates have no propagation delay - infinitely fast switching. Does not seem to allow dragging components to new positions after creation. Crashes occasionally without warning - save often. Pinch&zoom allows circuits to be created at larger size than default (nice for big fingers) but image on screen is fuzzy. No mention that I could find for VGA-out support - would be nice for classroom demos if available (haven't tested to see if capability present).