The loop runs on a reward the ad platform, not the app, verifies

The figure or the record

The operating loop behind a coin-funded drama app runs in four steps: an advertisement recruits an install, the app offers an in-app unlock in exchange for watching another ad, the viewer takes the offer, and a later coin purchase replaces the free option once curiosity about the next episode outruns patience. Google's AdMob documentation publishes the mechanics of the middle step. The rewarded ad guide states that "rewarded ads allow you to reward users with in-app items for interacting with video ads, playable ads, and surveys," and that the mobile ads SDK "calls the onUserEarnedReward method before the onAdDismissedFullScreenContent method," meaning the reward is confirmed before the ad's exit is even registered. A related format, rewarded interstitials, is documented separately: unlike standard rewarded ads, "users aren't required to opt-in," so the app must instead show an intro screen with "a clear, unobstructed option to skip the ad before it starts."

What the documents establish

Both formats put confirmation of the reward inside the ad SDK's own callback, not inside the app's own logic, which means the unlock step in the loop is technically verified by the ad platform rather than taken on trust from the publisher. The two formats also differ in consent: standard rewarded ads are opt-in by design, while rewarded interstitials are opt-out, with the skip option required specifically because the viewer did not ask to see an ad before one was offered.

Scope and caveats

Neither document states what an install costs to acquire, what a completed view earns the publisher, or how many unlocks a typical viewer claims before converting to a coin purchase; that is business data no ad-network reference publishes. These pages also describe Google's own SDK, not the loop's other supplier, the network that sold the acquisition ad in the first place, so this record covers only the unlock half of the loop, not the install half.

What to watch

Editorially, the number that would make the loop legible is the ratio of rewarded-ad unlocks to coin purchases per viewer cohort; no document opened here reports that ratio for any drama app, so it remains an operator-side figure until a company or analytics vendor publishes one.

• Does the unlock rate change noticeably once a viewer has watched a fixed number of rewarded ads for the same title, suggesting fatigue built into the loop's design?
• Are rewarded interstitials, being opt-out, used at a different point in the episode sequence than opt-in rewarded ads, and does that placement affect completion rates?
• What share of total revenue per title comes from rewarded-ad impressions against the free path, versus coin purchases against the paid path?

The documentation is confident about verification and silent about value: it can prove a reward was earned honestly, but it cannot say what that reward, or the ad that funded it, was worth to anyone in the chain.