User reviews about mobile apps

Usually it is very common for anyone to read the reviews posted by others while searching for an app to ensure that it will serve the purpose.

Sometimes the decision made purely based on the reviews to download or purchase an app would have disappointed you while using the specific app. It is also possible that some app is way better than mentioned in the reviews.

Here is an interesting observation by others on the user reviews.

Can we trust on all the user reveiews which we read about an app?