AppPriceData
Observed local App Store prices with one dated reference-currency comparison.
Across 6 observed Apple App Store storefronts, Open Book AI Chat is free to download in every stored observation. Each country row keeps its own storefront and observation date.
Rows are sorted by the USD reference conversion when a supported exchange rate is available. The local price and currency remain the original source values.
| Rank | Storefront | Local price | USD reference | Observed | Details | Official store |
|---|---|---|---|---|---|---|
| #1 | DEGermany | GratisEUR | $0.00 | August 15, 2026 | Country price | App Store ↗ |
| #2 | ESSpain | GratisEUR | $0.00 | August 15, 2026 | Country price | App Store ↗ |
| #3 | FRFrance | GratuitEUR | $0.00 | August 11, 2026 | Country price | App Store ↗ |
| #4 | JPJapan | 無料JPY | $0.00 | August 15, 2026 | Country price | App Store ↗ |
| #5 | TWTaiwan | 免費TWD | $0.00 | August 11, 2026 | Country price | App Store ↗ |
| #6 | USUnited States | FreeUSD | $0.00 | August 4, 2026 | Country price | App Store ↗ |