Does 開心鬥一番 work on iPhone Duo?
Probably, but it's not confirmed. 開心鬥一番 was updated on 22 October 2026 (version 4.4.4), after Apple's iPhone Duo tools came out, but Spring Thunder Technology Limited doesn't mention iPhone Duo. Apps built with Apple's standard components fill the inner screen on their own once rebuilt.
- On iPhone Duo
- Updated, unconfirmed
- Developer
- Spring Thunder Technology Limited
- Category
- Games
- Current version
- 4.4.4 · 22 October 2026
- App Store rating
- 4.6 out of 5 (66,631 ratings)
- Last checked
How we know
Updated since Apple's iPhone Duo tools came out (5 October 2026), but the developer doesn't mention the Duo. Apps built with Apple's standard components fill the inner screen on their own. See it on the App Store
History on iPhone Duo
- · Updated, unconfirmed (version 4.4.4)
Other Games apps on iPhone Duo
-
MinecraftMojang · GamesUpdated, unconfirmedUpdated 27 October 2026 -
ONE PIECEBandai Namco Entertainment Inc. · GamesUpdated, unconfirmedUpdated 27 October 2026 -
塔と傭兵団KEUNSIK JANG · GamesUpdated, unconfirmedUpdated 26 October 2026 -
Whiteout SurvivalCentury Games Pte. Ltd. · GamesUpdated, unconfirmedUpdated 20 October 2026 -
스트라이커 키우기YORAM CHOI · GamesUpdated, unconfirmedUpdated 25 October 2026 -
도깨비의세계Kakao Games Corp. · GamesUpdated, unconfirmedUpdated 27 October 2026 -
6·25 한국전쟁JUNYONG YOU · GamesUpdated, unconfirmedUpdated 22 October 2026 -
KingshotCentury Games Pte. Ltd. · GamesUpdated, unconfirmedUpdated 19 October 2026
All apps on iPhone Duo in South Korea →
Got an iPhone Duo? How does 開心鬥一番 look on the inner screen?
No owner report yet for version 4.4.4.
Still looking for the iPhone Duo itself? Restocks sell out within minutes: get an alert the moment one lands near you.
Good to know
Does 開心鬥一番 work on iPhone Duo?
Probably, but it's not confirmed. 開心鬥一番 was updated on 22 October 2026 (version 4.4.4), after Apple's iPhone Duo tools came out, but Spring Thunder Technology Limited doesn't mention iPhone Duo. Apps built with Apple's standard components fill the inner screen on their own once rebuilt.
Why do some apps have black bars on iPhone Duo?
Because they were built before Apple's iPhone Duo tools. On the inner screen, an app built for an older iOS opens in an iPhone-size window on a black background; one built for iOS 27.0 uses more of it but leaves some space blank; only apps built with the iOS 27.1 SDK, which developers have had since 5 October 2026, use the whole display.
When will 開心鬥一番 be adapted to iPhone Duo?
Only Spring Thunder Technology Limited knows. We check 開心鬥一番 on the App Store again within about 1 h: this page changes as soon as a new version says it supports iPhone Duo.
Do apps that aren't adapted still work on iPhone Duo?
Yes. Every iPhone app runs on iPhone Duo: one that isn't adapted just doesn't fill the inner screen until its developer updates it.
How we measure
Sources: Apple's list of apps adapted to iPhone Duo (22 October 2026) and each app's App Store record (version, release date, release notes, description). Apple doesn't say which tools an app was built with, so an app stays “Updated, unconfirmed” until its developer says more.