Yono Rummy vs OK Rummy: what should actually be compared?
The useful comparison is not which name sounds more established. Check each app separately for package ID, developer/publisher, source domain, current login behaviour and dated status evidence. A withdrawal report for Yono Rummy does not establish the status of OK Rummy, and the reverse is also true.
For gameplay, both names may be associated with rummy-style products, but rules, account systems and operator terms can differ. Use the rummy rules guide for card-game concepts, then return to the exact app page for identity or troubleshooting.
For OK Rummy-specific searches such as Yono OK or OK Yono, the OK Rummy identity page is the canonical YONODUNIYA resource.