Public in-app purchases
Current public in-app purchase prices from the US App Store storefront.
No public in-app purchase prices are stored for this storefront yet.
AppPriceDataObserved data
AppPriceData
Observed local App Store prices with one dated reference-currency comparison.
Across 6 observed Apple App Store storefronts, King of FM: DX Synth/E Piano is free to download in every stored observation. Because every observed download price is zero, the repeated per-country zero-price table is collapsed into this summary.
Current public in-app purchase prices from the US App Store storefront.
No public in-app purchase prices are stored for this storefront yet.
All 6 stored App Store observations have a download price of 0. Repeated zero-price country rows are hidden because there is no regional price difference to compare.
Latest regional observation: August 8, 2026. Individual storefront records remain available to AppPriceData without repeating identical zero values here.