Roehsoft ram expander has latest and current version which is v 3.76 and it has a size of 7 MB. This is not much greater size due to which it will not take much space in your device and hence will not affect any harm to your android smartphone.
Ram Expander No Root:
Ram Expander for android without root is a useful app for rooted Android devices which boost your Ram, Speeds up Your Phone, and Save Battery. The functionalities of this application are very easy to use. The root is a must to make it work. You can play big games without any kind of lag in device.