ChatGPT offers a permanent Free plan anyone can use without time limits....

https://smoothdecorator.com/how-do-i-check-if-im-about-to-be-charged-for-chatgpt-plus-on-android/

ChatGPT offers a permanent Free plan anyone can use without time limits. Occasionally, targeted users may get a Plus trial, which sometimes requires a card and auto-renews when it ends