steps
what you'll need: App Store auto-update (iOS)
1App appears to be removed from the US App Store, URL id943789119 redirects to region selector with no app listing
2iTunes API lookup returns 0 results for that App ID
3No mention of 'Blackout' product anywhere on synthe-fx.com or support.luminair.app
4If app still exists in another region, update via Settings > App Store > Updates
GotchaApp ID 943789119 returns zero results from Apple's iTunes Lookup API, app is likely delisted or removed Gotchasynthe-fx.com has no product page, support page, or mention of 'Blackout', may be a discontinued or pre-release product WarningDo not confuse with unrelated 'Blackout' apps by other developers (bingo, poker, fitness apps share the name)