My guitar's tuning peg feels tight. I feel like the strings are going to break. How accurate are these guitar tuner apps?

I use both GuitarTuna and Fender Tune, and both of it tells me that my guitar strings is tuned too low. But when I try to tune it, the tuning peg just feels so tight. Like the strings is going to break.

For context, I'm a beginner, my guitar is new, and I don't know what strings it has. Although I'm not really sure if that's important.

submitted by /u/StupidUselessHuman
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