Where these numbers come from

Collected automatically, once a day

Player counts, visits, favourites, the like ratio and the developer's last update time are read directly from Roblox's own public endpoints for universe 6443367640. Each reading is stored with its date, which is why this site can show how Gym Star Simulator changed over time instead of only how it looks today. As of Aug 25, 2026 we hold 9 daily readings.

Codes are read the same way, out of the live experience. Each code is stored with the first and last date we saw it, so a code marked working here was observably present on the date shown — and one marked expired is left visible rather than deleted.

Referenced sources

• Official Official Roblox experience page

  Source of record for the player count, visits, favourites, like ratio and the developer's last update time. When anything here disagrees with this page, this page wins.

  Last read Aug 25, 2026

• Community Gym Star Simulator Wiki (Fandom)

  Player-maintained wiki. The pet multipliers, trainer bonuses and world descriptions on this site are compiled from it. It is incomplete — the trainer list documents 5 of the 54 trainers the game contains — and parts of it still describe the Halloween 2025 event as ongoing, so treat its numbers as community-reported rather than official.

  Last read Aug 25, 2026

• Tracker Rolimon's game tracker

  Independent third-party tracker, useful for cross-checking the concurrent player figure against our own daily reading.

  Last read Aug 25, 2026

What we cannot verify

Community wikis are written by players and can be wrong, out of date, or describe a version of the game that has since been patched. Anything on this site sourced from one is labelled as such on the page that uses it. We do not present community numbers as official, and we do not invent a reward for a code when the developer never said what it gives.

Found something wrong? Tell us — corrections are made on the page itself, not quietly in the background.