Turning a selfie into an avatar can begin with a quick decision: you like an effect and want to try it. The finished image, however, does not explain what happened to the original photograph. To find out, you need to look at the app, the feature you used and its terms.
That is the starting point for a useful check. A similar result does not guarantee that two services process images in the same way. Before uploading your face, look for answers that help you decide whether the proposed use is acceptable to you.
Information that may travel with the image
A photo may contain location data if that information was recorded and remains in the shared file. Not every image does. Apple explains how to inspect those details and turn off Location in the sharing options in Photos. Apple · Manage location metadata in Photos
What is visible also matters: a staff pass on a table or a document in the background may reveal information you would rather not send. As an editorial recommendation, check the scene as well as the file’s data. Removing location information does not hide what appears in the photograph itself.
What permission to use an image means
Lensa’s terms provide an example of why checking the particular service matters. The company does not claim ownership of user content and describes a limited licence to operate or improve its service. This does not support assuming that every app demands perpetual rights over your face. Lensa · Terms of Use
Nor should you assume that every filter recognises your identity. The UK’s ICO distinguishes a photograph from the technical processing that allows someone to be uniquely identified. This explains the British framework, rather than automatically describing what every app does. ICO · Biometric recognition
Training and deletion are different questions
Lensa says it does not use personal data to train separate AI products. It also warns that uninstalling the app does not delete your account. These are statements in its policy, rather than findings from an independent audit. Lensa · Privacy Policy
To assess another service, look for its explanation of use, storage and deletion. Check whether the instructions refer to the original image, the generated result or the entire account. If you do not understand a distinction, you can postpone uploading until you find a clear answer.
A decision before the next filter
My recommendation is to select only the photos you need where the app allows it, and review the terms of the feature you choose. Price alone does not answer questions about privacy.
You can enjoy a transformation and want control over your image. Before agreeing, decide what use you are willing to allow and what information you need to make that decision. The useful question is specific: do you understand what will happen to that selfie after you receive the result?