Taking Inventory of Your AdMob Ad Units — All the Way to App Open Cooldown Design
When rewarded and interstitial units pile up and you can no longer tell which one fires on which screen, here is the inventory process I use, plus the design for adding a cooldown to an App Open ad that otherwise shows on every launch.
Tuning Interstitial Ad Fatigue Across Six Rork iOS Wallpaper Apps with Crashlytics and Remote Config
An implementation note from running six Rork-built iOS wallpaper apps in parallel and rebalancing interstitial fatigue with a three-layer frequency cap powered by Crashlytics non-fatal signals and Remote Config thresholds. Swift code, Cloudflare Workers config, and measured eCPM / D1 retention numbers from a four-week phased rollout.
How I Layered Rewarded, Interstitial, and App Open Ads to Lift ARPDAU 1.4× on My Wallpaper App
Optimizing AdMob's three formats individually hit a ceiling — they were eating each other's impressions. After redesigning Rewarded, Interstitial, and App Open as a coordinated 3-layer system with strict role separation and an exclusion gate, ARPDAU climbed 1.4× over nine weeks. The full playbook, code, and weekly numbers.