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Building PnL App – Helping Traders Stay Disciplined

Hey everyone,

I m working on PnL, an app built for traders who want to stay consistent and disciplined. Most trading apps only show charts and execution, but they rarely focus on the hardest part of trading psychology and discipline.

With PnL, we re focusing on three main things:

  • Auto and manual journaling so you can track trades without the hassle

  • Discipline Mode that blocks trading apps when you are likely to break your own rules

  • Community chat to connect with traders who go through the same challenges

Minwoo Lim

5mo ago

Can I ask for your advice?

I m building PnL App, a trading psychology app designed to help retail traders build discipline and consistency.

My biggest challenge is how to clearly communicate the value:

  • Most traders already pay for tools like TradingView.

  • But very few stay profitable because psychology breaks them.

PnL App - The trading psychology app that forces you to be profitable.

Want to quit trading? Don’t. PnL tracks every move, blocks your impulse trades, exposes your weak spots, and connects you with traders who trade to earn. Turn discipline into profit or watch others pass you by. Profit is a mindset.