Usability criteria — three measurements, one rubric
The usability rubric reads each rummy platform against three measurements: interface clarity, state-of-table legibility and account-control visibility. The criteria are unweighted. They are read together. The desk's verdict sits next to the evidence, not on top of it.
Interface clarity
Interface clarity measures whether the table, the draw and the discard are visible on a 6-inch screen without scrolling. The desk records the published mobile screenshots and the desk's own test tickets. The score is set against the published material: a single-screen table, four-corner tap zones, and a discard pile that does not require pinch-zoom.
State-of-table legibility
State-of-table legibility measures whether the player can read the joker, the discard pile and the current turn at a glance. The desk looks for a published joker indicator, a discard-pile position that does not shift on draw, and a turn indicator that is not text-only. A text-only turn indicator scores lower than an icon-based one.
Account-control visibility
Account-control visibility measures whether deposit limits, time-outs and self-exclusion controls are reachable in fewer than three taps from the lobby. A control that requires a separate page scores lower than a control that opens from the lobby or the table. The desk also records whether the controls are documented in the platform's own published help material.
The desk does not publish a 1-2-3 ranking. The criteria are unweighted and read together. The reader decides which measurement matters most for the kind of stake profile they intend to play, and reads the published evidence for that measurement across the platforms on the rubric.