Where do the live rates come from?
Live rates come from CoinGecko's public price API, refreshed every time the tool loads. If the request fails, the tool switches to an editable manual rate so it still works.
Why is the PKR amount different from my exchange app?
The tool converts at the market mid-rate. Exchanges and apps add their own spread and fees on top of the market rate, so the amount you actually receive is usually a little lower.