Is this a normal heart rate?

I used this iPhone app that supposedly can check your heart rate by having you put the tip of your finger on the camera lens and it said my heart rate was 88bpm. I don't know how accurate this is but if it is, I'm 18, 5'4" and weigh 145. Is this an okay number? I heard 60-99 is normal range for resting bpm but I just wanna make sure…

That is normal. The normal heart rate range is from 60 - 100 bpm, and you are in that range (88 bpm). If you did have a problem with a heart, you probably would have found out some other way (palpitations, chest pains, etc.)

Yea it's normal

Yes that's normal nothing to worry about atall

So you are taking health advice from a camera lens and app? Lol