I primarily use ChatGPT and Codex from my phone, but detailed usage percentage information is much easier to see on desktop web.
I’d like to suggest a simple battery-style usage indicator for mobile showing the percentage of included usage remaining.
Example: Codex Usage — 63% remaining
Tapping it could show included weekly usage remaining, purchased credit balance, next reset date/time, and any other usage limits currently applicable to the account.
An optional Android/iOS home-screen widget would also be useful.
The idea is to use the same authoritative account usage data already available on desktop, rather than tying the display to a specific model or limit.
Simple concept: treat AI usage like a phone battery percentage.