Rewarded Video

What rewarded video is

Rewarded video is an opt-in ad format: the user chooses to watch a video ad to completion in exchange for a defined in-app benefit — extra lives, soft currency, a continue after failing, a temporary booster, content unlocks. The loop: user choice → video plays → completion signal verified → reward granted.

The opt-in mechanic is what separates it economically from every interruptive format. Because the user elected the exposure and stays through completion, advertisers get guaranteed, attentive, completed views — and they pay accordingly: rewarded consistently clears the highest eCPMs of any mobile format, frequently several times interstitial rates in the same app and geography. Meanwhile, the user received something they wanted. Done well, it is the rare monetization mechanic where the publisher, advertiser, and user all come out ahead — measured properly, rewarded placements often correlate with higher retention among engaged users, the inverse of interstitial pressure.

The catch: every word of that depends on the reward design. The format's economics are product design wearing a monetization hat.

Designing the reward loop

1. Anchor rewards to real product moments. The strongest placements resolve a felt need at a felt moment: a continue at the fail screen, a second chest after a level, a revive in a run. Placements bolted on without a motivating moment produce low engagement regardless of reward size.
2. Price the reward in your economy, not in goodwill. The reward must be worth ~30 seconds of attention yet not so valuable that watching ads becomes the optimal way to play (or it cannibalizes IAP). Sketch the exchange rate against your soft-currency sinks and purchase price points before shipping.
3. Cap frequency by design, not policy afterthought. Daily caps and cooldowns protect both the economy and eCPM — unlimited rewarded availability floods supply, attracts the cheapest demand, and trains users to grind ads.
4. Keep the contract honest. Show what the reward is before the ad, grant it reliably on completion, and never convert opt-in into obligation. Server-side reward verification (the major SDKs — AdMob, AppLovin MAX, Unity LevelPlay — provide callbacks) prevents both fraud and false-denial support tickets.
5. Instrument the loop end to end. Offer impressions → opt-in rate → completion rate → reward grant → next-session behavior. A placement with low opt-in is mispositioned or mispriced; one with high opt-in and falling retention is over-rewarded or over-available.

The measurement view

Rewarded's effect is inherently cross-metric, so single-number judgments mislead:

• Engagement rate (opt-ins per offer shown) measures placement-moment fit. Strong placements in games commonly see substantial double-digit engagement; a single-digit rate signals a weak moment or weak reward.
• Impressions per DAU × eCPM gives the revenue contribution — the ARPDAU decomposition applied to the format.
• Retention and IAP deltas between rewarded users and matched non-users carry the verdict. Run it as a controlled comparison: self-selection means rewarded watchers are already your more engaged users, so naive correlations flatter the format. Holdout or staged-rollout designs separate the placement's effect from the selection effect.
• Economy health: soft-currency inflation, sink/source balance, and IAP conversion among heavy rewarded users — the early warnings that rewards are mispriced.

Demand-side, rewarded inventory attracts performance budgets (mostly game and app-install advertisers buying completed views), which keeps the auction deep in most geographies through mediation and in-app bidding.

Common mistakes

• Making the format effectively mandatory. Gating core progression behind "optional" ads converts the opt-in premium into interstitial-grade resentment — the design crime that destroys exactly what makes rewarded valuable.
• Using unbalanced rewards. Over-generous rewards inflate the economy, cannibalize IAP, and attract ad-grinding behavior; stingy rewards kill opt-in. Both failures are quiet and show up in different dashboards weeks apart.
• Ignoring completion and retention effects. Shipping placements without holdout measurement leaves you blind to whether the format is adding value or just relabeling engaged users' revenue.
• Flooding availability. Rewarded eCPM rests on scarcity of completed attentive views; unlimited daily watches per user dilute the auction and the economy simultaneously.
• Skipping server-side verification. Client-only reward grants invite spoofing, and SDK callback edge cases (app backgrounded mid-video) become support tickets and one-star reviews.

FAQ

Why are rewarded eCPMs so much higher than other formats? Advertisers pay for guaranteed completion by a user who chose to watch — the highest-quality video impression mobile offers. Pricing reflects completed-view economics (often CPV-like demand) rather than impression-glimpse economics.

Does rewarded video cannibalize in-app purchases? It can in both directions, which is why measurement matters. Badly priced rewards substitute for purchases; well-placed ones act as a payer on-ramp (engagement deepens, spending follows) and monetize the users who would never pay. Controlled experiments per placement — not category folklore — settle it for your app.

How many rewarded placements should an app have? Driven by motivating moments, not a quota: most games support several distinct ones (fail-continue, daily bonus, currency top-up, booster). Each needs its own cap and economy pricing. One great placement outperforms four mediocre ones.

Is rewarded video only for games? Games dominate, but the mechanic generalizes to any app with a grantable benefit: extra features for a day, content unlocks, premium trials, extended limits in utility apps. The constraint is having something worth ~30 seconds that doesn't undermine the core offering.

How does rewarded fit the broader monetization stack? As the premium-eCPM, engagement-positive layer alongside interstitials (volume), banners (floor), and IAP — with mediation running the auction underneath. The app monetization path covers composing the full stack.