You are able to download the .apk installation package of Casta 13.51 for free and check out users' reviews on Droid Informer. The file size doesn't exceed 22 MB and the app runs flawlessly on Android 4.1 and above. The security report indicates that this application is completely safe. The tool was originally created by LoyaltyPlant and it is included in the Shopping category.
The latest update of Casta was launched on Aug 1, 2019 and the app has been installed by over 50K users. Google Play shows that this application is rated 4.4 by its users. There are advertisements in the tool.