The difference between BTC Moon and BTC Infinity Grid is the type of the bot. BTC Moon is a grid bot, with super wide range (usually 10 000 – 100 000 ) and 500 grid numbers. Meanwhile Infinity Grid is an infinity grid bot for BTC Pair with no price limits.
You can learn more about Infinity grid bot here : https://www.pionex.com/blog/pionex-infinity-grid-bot/
Learn more about Moon Bot here : https://www.pionex.com/blog/moonshot-grid-bot/