No revenue estimate for the App Store: Apple publishes no install counts, and its star-rating counts don't calibrate to sales the way Steam's written reviews do. Reviews and prices only.
Difficulty here moves on its own. No manual level picking, no settings to tweak before each round. Logic, Memory, Counting, Attention and Reading make up five separate labs, and each one gets harder only after the child actually handles the current stage. Progress comes from missions, not drills, and every completed mission adds points, stars, or a new level to unlock. Parents see the other side of it. A PIN opens charts, skill by skill reports, and a full session history, kept away from the child's own screen entirely. Nothing here is locked behind a paywall. No ads interrupt a session, no subscription gates a lab, and everything ships unlocked from day one. https://www.freeprivacypolicy.com/live/dd3be59f-40d3-41e6-8e8e-5a994853788a https://www.freeprivacypolicy.com/live/06860040-499b-4a12-8993-2580f7180950
Trends
Price over time on the United States storefront, quoted in USD — from our own daily price tracking. Other markets are listed under "Price by market" in the Prices tab; they are not on this axis, because one line cannot be two currencies.
Showing the last 90 days (the review-based charts: the last 4 monthly points). Full history and CSV export come with a free account.
Related
Not enough data to name similar games: no other game shares enough of this one's tags.