A precise, no-nonsense iOS network speed test. Measures download, upload, latency, and jitter against Cloudflare's global edge — the same measurement methodology as the Cloudflare Speed Test web app, ported natively to SwiftUI.

• Download & Upload — 14 progressive stages (100 KB → 250 MB) so accuracy scales with your connection
• Ping — unloaded round-trip latency to Cloudflare's edge
• Jitter — consistency of latency over time
• Loaded latency & jitter — bufferbloat indicators measured during transfer
• Packet loss — observed during the test window
• Network context — Wi-Fi / cellular type, carrier, public IP, ISP, and geolocation

Results are reported as 90th-percentile values, filtering one-off spikes for a stable representative number.

SpeedTest/
├── SpeedTestApp.swift          # @main, attaches SwiftData container
├── Models/
│   └── SpeedTestResult.swift   # @Model — persisted run record
├── Services/
│   ├── SpeedTestEngine.swift   # actor — runs measurement phases
│   ├── NetworkInfo.swift       # Wi-Fi / cellular / carrier detection
│   └── IPGeolocation.swift     # public IP + ISP lookup
├── ViewModels/
│   └── SpeedTestViewModel.swift
└── Views/
    ├── ContentView.swift
    ├── SpeedTest/              # live-test UI
    ├── History/                # SwiftData-backed history
    └── PrivacyPolicyView.swift

The SpeedTestEngine actor drives a phase machine (idle → latency → download → upload → finished) and publishes Progress snapshots that the view model surfaces to SwiftUI. All transfers are real network I/O against Cloudflare — no mock data, no synthetic timing.

Prerequisites: Xcode 26+, Ruby with Bundler, XcodeGen (brew install xcodegen).

bundle install
xcodegen generate
open SpeedTest.xcodeproj

Run on a real device for accurate cellular measurements — the Simulator only sees the host's Wi-Fi.

Release tooling lives in fastlane/. Full details in DEPLOYMENT.md.

bundle exec fastlane ios prepare   # regen project + signing-disabled Release build
bundle exec fastlane ios beta      # TestFlight
bundle exec fastlane ios release   # App Store submission

App Store Connect credentials are supplied via the APP_STORE_CONNECT_API_KEY_* environment variables.

See PRIVACY.md. The app performs network measurements and an IP-based geolocation lookup to label results — nothing is sent to a backend operated by us, there is no account, and no analytics or ad SDKs are linked.

See SUPPORT.md.

Source: github.com/harborline/ios-speedtest