He claims he's the developer of the software he's recommending (See his post).
The app costs US$0.99 on Google Play, and is newly submitted (June 17, 2017).
This guy has no questions, and only 2 answers, both of which are recommending the app, and their contents are almost identical. In other words, if he had posted other questions or answers, I wouldn't have considered him as a spammer.
His display name,
Smaj Enterprise, is exactly the same as the publisher name on Google Play.
The whole answers are
describingpromoting the app (telling its advantages), which fits in the criteria.
See images below:
The app on Google Play (Click image to jump to GP):
As an experienced Stack Exchange user (I registered at Stack Overflow over a year ago), I clearly know what a spam flag mean. (My profile on Meta SE) I carefully investigated the post before raising the flags.