From my own experience, if I am able to get through 5x5, even if it was tough, I still add weight. If I can't get through 5 reps on any set, I will usually try the same weight twice and if I fail on the second attempt, I will drop the weight down a bit.

My upper body strength sucks, so instead of increasing by 5lbs per side, I do 2.5lbs per side on my OHP and BP. I have had much better results this way.

I even use adjustable ankle weights which allow me to add 0.5 - 1.5lbs per side to the bar. I enjoy being able to add a little bit of weight, without having to stay where I am until I can do it.

As for TOM: I can't say I really notice. I do notice when I havn't eaten well or havn't had enough fluids.

Cardio: I still run, bike etc. I am a few months into Stronglifts and at the beginning, I did little Cardio and I still saw great results. Stronglifts is my top priority, Cardio comes second. My body tells me when its had too much. I think it is all on personal choice. If your body can handling, why not, just make sure give time to recover.

so then for my pendlay row... I got through the 5x5, so I should add the 5lbs next time even though I barely finished?

If it was me and I got through 5x5 with good form even if it was tough, I would add weight and give it a try. But if by barely finishing means your form was being compromised, I would probably stay where I am a second time. (Sorry I didn't mention that in my first post)

Example: My squats are at a point where it is really starting to challenge me. I did 105lbs 5x5 with good form, so the next workout I did, my squats were upped to 110lbs.

My first attempt I got through the first 4 sets fine, but the 5th set I could barely do 4 reps. So the next workout I stayed at 110lbs. My second attempt still wasn't very good. I made it through 5x5, but my form was not very good on the last two sets. So even though I made it through all 5x5, being that my form was bad, I classify that workout as a fail for me. Since I have failed twice, I am dropping my weight down to 105 and will try again.

Maybe not everyone does it that way but form is key and even though I could do 5x5, if my form doesn't improve on that second attempt workout, adding more weight I risk injury.

I hope that makes sense....really hard to explain. Just do what you feel comfortable with. If you want to stay at your current weight a few more workouts, go for it! You will improve : )

PS - I am not professional, its just my experience since starting Stronglifts and what has been helping me : )

^^^
I haven't seen that app for android.

Like everyone else said, the load needs to increase overtime, but by how much and how fast is a matter of personal judgment. In my book, good form always trumps gains. If I cannot do a weight with good form, I would deload even on the same workout.

Well, if you are looking for just an app to log your lifts, you can use MFP. The exercise diary has all the lifts under "strength training". (I actually just write them down in a little notebook because that's what Mark Rippetoe commanded. And the notebook never runs out of batteries.)