About this tool

A free Chinese-language calculator for comparing two subscription quotes in CNY. Enter monthly or yearly billing and active days per month to compare normalized monthly cost, annual cost and cost per active day. Calculations stay in the browser; no login, AI model, input upload or analytics. Results can be copied or saved as text, and the self-contained HTML source is MIT licensed. It compares cost only, not plan features, taxes or refunds. Submitted by its maker, LiuNengAI, whose host website separately offers paid ChatGPT subscription assistance and is not affiliated with OpenAI. This calculator does not require buying that service.