I would give it 5 stars... but..

The export time is horrendous even more so that the app needs to be open the whole time. Ive exported one file so far and it worked perfectly fine but the next project I tried exporting crashes every time I try. This app is better than the lapse app but it needs an update to fix the minor bugs. If it werent for those factors, five stars!

YukiTheGaijin about Flow Speed Control Pro, v1.11