Luminous

A Swift library that gives you quick access to system information on iOS.

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Requirements

• iOS 17+
• Swift 6.0
• Xcode 16+

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Installation

Swift Package Manager

In Xcode: File → Add Package Dependencies, then enter:

https://github.com/andrealufino/Luminous

Or add it directly to Package.swift:

dependencies: [
    .package(url: "https://github.com/andrealufino/Luminous", from: "3.0.0")
]

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Usage

All API is accessed through static properties and methods on nested structs under the Luminous namespace. No instantiation needed.

import Luminous

// Disk
let free = Luminous.Disk.freeSpace(in: .gigabytes)
let total = Luminous.Disk.totalSpaceInBytes

// Network
if Luminous.Network.isInternetAvailable {
    let expensive = Luminous.Network.isExpensive  // true on cellular/hotspot
}

// Hardware
let cores = Luminous.Hardware.processorsNumber
let model = Luminous.Hardware.modelIdentifier   // e.g. "iPhone16,1"
let thermal = Luminous.Hardware.thermalState    // ProcessInfo.ThermalState

// OS version comparison
let current = Luminous.Hardware.systemVersion
let ios18 = OperatingSystemVersion(majorVersion: 18, minorVersion: 0, patchVersion: 0)
if current >= ios18 { ... }

// Battery — requires @MainActor
let level = await MainActor.run { Luminous.Battery.level }   // Float? (0–100)
let state = await MainActor.run { Luminous.Battery.state }   // UIDevice.BatteryState

@MainActor properties

Battery, Hardware.Screen, and Hardware.Device access UIKit APIs and must be called on the main actor:

// In a @MainActor context (e.g. a SwiftUI view or view controller):
let brightness = Luminous.Hardware.Screen.brightness
let style = Luminous.Hardware.Device.userInterfaceStyle  // .light / .dark

// From a non-isolated context:
let brightness = await MainActor.run { Luminous.Hardware.Screen.brightness }

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API Reference

Luminous.Application

Property	Type	Description
version	String	CFBundleShortVersionString (e.g. "3.0.0"); "" if absent
build	String	CFBundleVersion (e.g. "42"); "" if absent
completeAppVersion	String	"3.0.0 (42)"
bundleIdentifier	String?	Bundle identifier (e.g. "com.example.MyApp"); nil if absent
displayName	String	User-visible app name; "" if absent

Luminous.Audio

Property	Type	Description
currentAudioOutputVolume	Float?	0.0–1.0; does not activate the audio session
secondaryAudioShouldBeSilencedHint	Bool	Another app is playing non-mixable audio
isWiredHeadsetPluggedIn	Bool	3.5 mm / Lightning / USB-C wired headset
isAnyHeadphoneConnected	Bool	Wired, AirPods, or any Bluetooth audio device

Luminous.Battery — @MainActor

Property	Type	Description
level	Float?	0–100; nil in Simulator
state	UIDevice.BatteryState	.unknown / .unplugged / .charging / .full
isCharging	Bool	Convenience shorthand for state == .charging

Luminous.Disk

All size methods accept a UnitInformationStorage parameter (default: .gigabytes).

Property / Method	Type	Description
totalSpaceInBytes	Int64	Raw total capacity
freeSpaceInBytes	Int64	Available space including purgeable content
usedSpaceInBytes	Int64	Used space in bytes
totalSpace(in:)	Double	Total capacity in the given unit
freeSpace(in:)	Double	Free space in the given unit
usedSpace(in:)	Double	Used space in the given unit

let gb = Luminous.Disk.freeSpace(in: .gigabytes)
let mb = Luminous.Disk.usedSpace(in: .megabytes)

Luminous.Hardware

Property / Method	Type	Description
processorsNumber	Int	Total processor count
activeProcessorsNumber	Int	Active processor count
physicalMemory(in:)	Double	Physical RAM in the given unit (default .gigabytes)
availableMemoryInBytes	Int64	Memory available to the process
availableMemory(in:)	Double	Available memory in the given unit (default .megabytes)
systemVersion	OperatingSystemVersion	Comparable — use >=, <, etc.
uptime	TimeInterval	Seconds since last boot
isLowPowerModeEnabled	Bool
thermalState	ProcessInfo.ThermalState	.nominal / .fair / .serious / .critical
modelIdentifier	String	Hardware model string (e.g. "iPhone16,1")
isSimulator	Bool	true when running in the iOS Simulator

Luminous.Hardware.Screen — @MainActor

Property	Type	Description
brightness	Float	0.0–1.0
isScreenMirrored	Bool
isZoomed	Bool	Display Zoom is active
nativeBounds	CGRect	Physical screen bounds in pixels
nativeScale	Float	Physical screen scale
bounds	CGRect	Logical screen bounds in points
scale	Float	Logical screen scale
maximumRefreshRate	Int	60, 120, etc.

Luminous.Hardware.Device — @MainActor

Property	Type	Description
identifierForVendor	String?	Vendor UUID
name	String	User-assigned device name (e.g. "Andrea's iPhone")
orientation	UIDeviceOrientation	Current device orientation
systemName	String	OS name (e.g. "iPhone OS")
userInterfaceStyle	UIUserInterfaceStyle	.light / .dark / .unspecified

Luminous.Locale

Property	Type	Description
currentLanguage	String?	BCP 47 code (e.g. "en", "it")
currentTimeZone	TimeZone	Current time zone
currentTimeZoneName	String	IANA identifier (e.g. "Europe/Rome")
currentCountry	String?	ISO 3166-1 (e.g. "US", "IT")
currentCurrency	String?	ISO 4217 (e.g. "USD", "EUR")
currentCurrencySymbol	String?	e.g. "$", "€"
usesMetricSystem	Bool
decimalSeparator	String?	"." or ","

Luminous.Network

Property	Type	Description
isConnectedViaWiFi	Bool
isConnectedViaCellular	Bool
isInternetAvailable	Bool	Any satisfied path
isExpensive	Bool	Cellular or personal hotspot
isConstrained	Bool	Low Data Mode is active
supportsIPv4	Bool
supportsIPv6	Bool

OperatingSystemVersion — Comparable

Luminous adds retroactive Equatable and Comparable conformance to Foundation's OperatingSystemVersion, enabling direct comparison operators:

let current = Luminous.Hardware.systemVersion
let ios18 = OperatingSystemVersion(majorVersion: 18, minorVersion: 0, patchVersion: 0)

if current >= ios18 {
    // iOS 18+ code path
}

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Migrating from v2

Removed (no replacement)

API	Reason
Luminous.Carrier	CTCarrier deprecated since iOS 16.1; no reliable replacement
Luminous.Hardware.Sensors	All sensors have returned true on every iPhone since 2014
Luminous.Hardware.Accessory	MFi-only niche API with no broad use case
Luminous.Network.SSID	Dead on iOS 13+ without entitlements and location access
Luminous.Application.clipboardString	Triggered iOS paste permission banner as a side-effect
Luminous.Hardware.Screen.snapshotOfCurrentView	Used deprecated UIScreen API, no @MainActor safety
CocoaPods support	SPM is the standard; use Package.swift

Renamed / Moved

v2	v3
Hardware.bootTime	Hardware.uptime
Hardware.systemName	Hardware.Device.systemName
Hardware.Accessory.isHeadsetPluggedIn	Audio.isWiredHeadsetPluggedIn

Replaced

v2	v3
BatteryState (custom enum)	UIDevice.BatteryState directly
MeasureUnit (custom enum)	UnitInformationStorage from Foundation
SystemVersion struct	OperatingSystemVersion + Comparable extension (see above)
Disk.totalSpace(measureUnit:)	Disk.totalSpace(in: UnitInformationStorage)
Disk.freeSpace(measureUnit:)	Disk.freeSpace(in: UnitInformationStorage)
Disk.usedSpace(measureUnit:)	Disk.usedSpace(in: UnitInformationStorage)
Hardware.physicalMemory(with:)	Hardware.physicalMemory(in: UnitInformationStorage)
Audio.currentAudioOutputVolume → Double?	Audio.currentAudioOutputVolume → Float? (no session activation side-effect)
Deprecated Disk string properties	Use totalSpace(in:) / freeSpace(in:) / usedSpace(in:)

New in v3

API	Description
Audio.isAnyHeadphoneConnected	Includes AirPods and all Bluetooth audio
Hardware.thermalState	ProcessInfo.ThermalState — nominal / fair / serious / critical
Hardware.modelIdentifier	Hardware model string, e.g. "iPhone16,1"
Hardware.availableMemoryInBytes / availableMemory(in:)	Memory available to the process
Hardware.Screen.maximumRefreshRate	60, 120, etc.
Hardware.Device.userInterfaceStyle	Light / dark / unspecified
Network.isExpensive	True on cellular or personal hotspot
Network.isConstrained	True when Low Data Mode is active
Network.supportsIPv4 / supportsIPv6	IP protocol support on current path
OperatingSystemVersion Comparable	Use >=, <, == directly on OS version values

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Author

Andrea Mario Lufino

License

Luminous is available under the MIT license. See the LICENSE file for details.