For simplicity, let's assume a few things:- The app uses a mix of banner ads, interstitial ads, and rewarded video ads.- The average revenue per thousand impressions (RPM) is $1 for banner ads, $10 for interstitial ads, and $20 for rewarded video ads.- Each user generates an average of 2 banner ad impressions, 1 interstitial ad impression, and 1 rewarded video ad impression per day. Given these assumptions, we can calculate the potential monthly ad revenue for the app: Banner ads:- 2 banner ad impressions per user per day * 500,000 users = 1,000,000 banner ad impressions per day- 1,000,000 banner ad impressions per day * 30 days = 30,000,000 banner ad impressions per month- 30,000,000 banner ad impressions per month / 1,000 = 30,000 RPM- 30,000 RPM * $1 = $30,000 monthly revenue from banner ads Interstitial ads:- 500,000 users * 1 interstitial ad impression per day = 500,000 interstitial ad impressions per day- 500,000 interstitial ad impressions per day * 30 days = 15,000,000 interstitial ad impressions per month- 15,000,000 interstitial ad impressions per month / 1,000 = 15,000 RPM- 15,000 RPM * $10 = $150,000 monthly revenue from interstitial ads Rewarded video ads:- 500,000 users * 1 rewarded video ad impression per day = 500,000 rewarded video ad impressions per day- 500,000 rewarded video ad impressions per day * 30 days = 15,000,000 rewarded video ad impressions per month- 15,000,000 rewarded video ad impressions per month / 1,000 = 15,000 RPM- 15,000 RPM * $20 = $300,000 monthly revenue from rewarded video ads Total monthly ad revenue = $30,000 (banner ads) + $150,000 (interstitial ads) + $300,000 (rewarded video ads) = $480,000 So, based on these assumptions, an app with 1 million downloads and 500,000 monthly active users could potentially earn around $480,000 per month from ads only. Keep in mind that these are simplified calculations, and the actual revenue could vary based on many factors.