Revenue per session up, but a retention guardrail dips

Question

A mobile game tests showing more frequent ads between levels. The primary metric, revenue per session, is up a significant +6%. But a guardrail, 14-day retention, is down a significant 0.4 percentage points, and average session length dipped slightly.

Should the team ship the heavier ad load, and how should they reason about the retention regression?

Accepted Answer

Why retention is the guardrail. Revenue per session is the immediate win, but retention protects the base of players who generate all future sessions and revenue. Monetization changes almost always raise near-term revenue; the danger is that they quietly drive players away, so you earn more today from a shrinking audience. This is the classic short-term versus long-term tension. More ads squeeze more money out of each session now, but a 0.4 point drop in 14-day retention means fewer players come back, and that loss compounds. A slightly shorter session hints that the ads are wearing on the ex…

Revenue per session up, but a retention guardrail dips

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