Quoted:
Let me first start by saying, the initial weight the app started me at was a complete joke. I think I added about 2x for most of the exercises.
That being said, even with the added weight it's only taking 30 minutes, or a little less. Is this normal? Do I need to add more weight? I'm still easily making it through all 5 sets, and don't take any rest between most of them.
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The point is to start low, learn the movements and condition the body. Strength training changes your body on multiple levels, neurological, skeletal, etc., it takes time for those adaptations to occur.
That said, could you add 10-15lbs to your squat instead of 5lbs each session? Sure, you could, but if you are totally untrained, you'll hit the wall that much faster.
Think of training longer term. You'll have 12 squat sessions a month, adding 5lbs each time, that's a 60lbs increase to your 5 rep worksets. In three months, 180lbs.