Straight to the point:

Is your mobile phone iphone or Android? If you are talking about iphone, there is only one way for you to download software, and that is the app store. You can click on your avatar in the app store-click on the purchased item, and you can see all the software you have downloaded. Here, you should be able to find this software according to your own impression.

If it is an Android machine, you should also go to the mall where you download the software. Look at the download record and downloaded installation package (if not deleted)

If your software is not download from that software mall. See if the installation package is still available.

Basically, that's the idea.

-If it helps you, please accept it. Thank you! -