Professional Network Testing for iOS & macOS
Measure bandwidth, analyze latency, and diagnose network issues with the most powerful iperf3 client on Apple platforms.
Powerful Features
Everything you need for professional network performance testing, beautifully designed for Apple platforms.
Real-Time Speedometer
Visual speed indicator with color-coded download (blue) and upload (green) metrics in real-time.
Dynamic Bandwidth Charts
Interactive graphs with pinch-to-zoom, showing speed over time with separate download/upload lines.
Server Mode
Run an iperf3 server directly on your device. Display IP address for clients to connect.
Server Management
Organize servers with favorites, groups, and tags. Import from JSON or browse public servers.
Detailed History
Complete test history with filtering by protocol, server, and date. Group results by time periods.
Export Results
Export to CSV or JSON with full metrics, raw iperf3 output, and system information.
iOS Shortcuts
Automate tests with Siri Shortcuts. Run tests, get results, integrate with workflows.
Multi-Language
Available in 12 languages including English, Chinese, Japanese, Korean, Arabic, Russian, and more with full RTL support.
Two Testing Modes
- Quick start with preset parameters
- Fast test: 8 seconds
- Standard test: 10 seconds
- Extended test: 15 seconds
- Auto server selection
- One-tap testing
- TCP or UDP protocol selection
- Custom test duration
- Multiple parallel streams (1-10)
- Bandwidth throttling
- TCP window size configuration
- Direction: Download / Upload / Bidirectional
App Screenshots
See iPerf3 Client & Server in action
Server Management
Comprehensive tools to manage your iperf3 servers with ease.
Favorites & Groups
Organize servers with favorites, custom groups, and tags for quick access.
Search & Sort
Filter by name or host. Sort by various parameters including ping latency.
Import / Export
Import servers from JSON files or clipboard. Export your server list anytime.
Public Servers
Browse directory of public iperf3 servers. Filter by region and bandwidth.
iOS Shortcuts Integration
Automate your network testing with Siri Shortcuts and x-callback-url support. View API Documentation →
Run iPerf Test
Start a test with custom server, protocol, direction, and duration.
Get Last Result
Retrieve the most recent test result from history.
Test Server
Check if a specific server is available and responsive.
List Servers
Get a list of all configured servers for selection.
// x-callback-url support
// Run a test
iperf3cs://x-callback-url/run-test
?server=myserver.com
&protocol=tcp
&direction=download
&durationSec=5
// Get last result
iperf3cs://x-callback-url/get-last-result
// Works on macOS too!
// Use "Open URL" in Shortcuts
// or run from Terminal:
open "iperf3cs://x-callback-url/run-test"
Built for Apple Platforms
Native experience on every device with full feature parity.
iPhone
Optimized for one-handed use with haptic feedback and intuitive gestures.
iPad
Enhanced layout with split-view support and larger touch targets.
Mac Catalyst
Full macOS experience with toolbar, keyboard shortcuts, and hover effects.
Detailed Test History
Every test is saved with complete metrics for analysis.
Speed Metrics
Average, maximum, minimum speeds with per-interval breakdown.
TCP Metrics
RTT, retransmissions, MSS, PMTU, and congestion window data.
UDP Metrics
Jitter, packet loss percentage, out-of-order packets, total packets.
Interactive Charts
Speed over time, latency history, and jitter visualization.
Raw Output
Complete iperf3 console output for detailed analysis.
Test Configuration
Full details of protocol, duration, streams, and all parameters.
Privacy First
No data collection. No servers. Works completely offline.
Frequently Asked Questions
Ready to Test Your Network?
Download iPerf3 Client & Server and start measuring your network performance today.
Download on the App StoreNeed Help?
Contact us at chamav@gmail.com
We typically respond within 1-2 business days.
Visit Support Page