I built a free mobile trainer for Board Reading (Nuts & Outs) - Feedback wanted

I've been a long-time reader of the forums. I'm a software developer and a poker enthusiast from South Korea.

While studying PLO and Hold'em, I realized I had a leak where I would sometimes miss the absolute nuts on complex boards or miscount my outs in the heat of the moment. I wanted a simple tool to drill this skill on my phone (subway/commute), but I didn't want to download bulky apps.

So, I built a lightweight web tool for myself, and I decided to open it up for free.

Link: https://myholdemtrainer.com (No ads, no login required, mobile-optimized)

It currently has two modes:

1. Nuts Catcher:

You must select the exact 2-card combination that makes the nuts on the current board.

It accounts for kickers.

Feature: I implemented a "Wildcard (X)" logic. If you hold the Ace of a flush suit and the second card doesn't matter, you use 'X' to signify "Any Card".

2. Outs Counter:

Simulates a hand progression (Flop -> Turn).

You calculate the number of outs that improve your hand to a Straight/Flush or better.

I'm looking for feedback on the UI and the logic. If you find any board texture where the "Nuts" calculation seems off, please let me know!

Thanks!!