Differentiating between free PS+ games and purchased games

I recently was given a promo code to redeem a game on my PS4, and before redeeming it, I checked my library and noticed that the game I was about to redeem was already listed there. I can't remember if the game was one that I purchased, or downloaded for free through my PS+ subscription.

Is there any way to tell, on the console itself, if a game in the PS4 library was downloaded for free through PS+? Or is the only way to look through one's purchase history online and pick out the ones that cost nothing?

I ask because if the game is from my PS+ subscription, I'd like to still redeem the code, as I would like the game to be available after my subscription has expired. Otherwise, I'll hold off on redeeming the key.

Solution 1:

Now you can go to your Library and PS+ games will be listed there in the separate group:

Solution 2:

The only way to check if a game on your PS4 is a Plus game is to see if the game has an expiring licence. Plus games have a licence ending at the same time as your Plus subscription, while purchased games don't.

To see if your game has an expiring licence select the game tile, press the options button and select "Information". A PS Plus game will show lines for "Valid Period (Start)/(End)" and "Remaining Time", while purchased games don't have these lines.