UA Ledger · Measurement Lab · draft for review

Separate payer concentration from average revenue per payer

Synthetic teaching inputs. No real campaign results or industry defaults. Change the values to inspect the model. Calculations run locally; this page sends no data and does not retain inputs after closing.

Choose the group-selection rule before looking at outcomes, then enter total revenue and payer count together with the selected group’s revenue and count. Subtract the group from the totals to derive the remainder. All values must cover the same window and revenue definition; refunds and multiple identities can otherwise distort both means.

Calculated outputs

Assumption sensitivity

Only topRevenue varies; all other inputs are held constant. This is not a probability range.

Equations

• Selected revenue share %: 100*topRevenue/revenue
• Selected revenue per payer: topRevenue/topPayers
• Other revenue per payer: (revenue-topRevenue)/(payers-topPayers)

Additional constraints: (revenue>0) && (topRevenue<=revenue) && (topPayers<payers). The field minimums also apply.

Limits

Selection after observing spend changes the interpretation of the comparison. This calculator provides no uncertainty estimate, causal attribution or permission to infer an individual player’s future spending.

Measure ecommerce: purchases and refunds · primary documentation checked 19 September 2026.