iOS
Table:
iOS

iOS 13 running on an iPhone X

Developer	Apple Inc.
Written in	C, C++, Objective-C, Swift
OS family	Unix-like, based on Darwin (BSD), iOS
Working state	Current
Source model	Closed source
Initial release	June 29, 2007; 17 years ago (2007-06-29)
Latest release	17.6.1[1] (21G101)[2] (August 19, 2024; 20 days ago (2024-08-19)) [±]
Latest preview	18.0 beta 8 (Public Beta 6)[3] (August 28, 2024; 11 days ago (2024-08-28)) [±]

18.1 beta 2[4] (August 12, 2024; 27 days ago (2024-08-12)) [±]

,
Marketing target	Smartphones, tablet computers, portable media players
Available in	40 languages[5][6][7][8]
Update method	iTunes (formerly) or OTA (iOS 5 or later)
Platforms

ARMv8-A (iOS 7 and later)

ARMv7-A (iPhone OS 3–iOS 10)

ARMv6 (iPhone OS 1–iOS 4.2.1)

Kernel type	Hybrid (XNU)
Default
user interface	Cocoa Touch (multi-touch, GUI)
License	Proprietary software except for open-source components
Official website	www.apple.com/ios/
Support status
Supported

Looking at the table, decide if the statement is entailed, neutral, or refuted by the data. Provide the verdict inside {"answer": "YOUR ANSWER"} as JSON.

Assertion: iOS is an open-source software.

answer: refuted