@Roseheli
Hi,
This is because real weather radars do not predict future precipitation. If other apps do this, they just use and scroll the last frame of the loop to make an extrapolation in future. This does not allow to predict future cell development.
Or much better, look at Meteo Swizz, you should know they have developed a now-casting software that provides radar-like forecast. It is based on COSMO 1 km resolution. This type of model is not available all around the world !