iPerf3 Client & Server

iPerf3 Client & Server for Android is a native network speed testing app that runs the real iperf3 v3.16 binary via JNI on Android 7.0+. It exposes client, server, and advanced modes with real-time charts, persistent test history, and localization in 14 languages.

Problem

Network engineers and developers needed a proper iperf3 client on Android, not a web wrapper or a simplified clone. The existing tools on the Play Store were outdated, missing server mode, or lacked the full iperf3 flag set.

Solution

A full-featured Android app wrapping iperf3 v3.16 as a native library via JNI. Three core modes expose the complete tool:

• Client Mode: standard iperf3 client, TCP and UDP, with configurable parameters.
• Server Mode: turns the phone into an iperf3 server on a user-defined port.
• Advanced Mode: full manual control over all iperf3 flags, for power users.

Engineering Highlights

• Native iperf3 v3.16: compiled for Android ABI targets and bridged with JNI. The app runs real iperf3, not a re-implementation.
• Real-time charts: live RTT, bandwidth, and jitter graphs rendered during an active test.
• Test history: persistent local storage of results with CSV and JSON export.
• 14 languages: full localization including Arabic and Hebrew (RTL support).
• Theme system: light/dark mode + 10 color schemes with per-test color coding.
• Cross-platform awareness: the same Google Play app ID is used for cross-promotion alongside the Apple version.

Platform Constraints

Android 7.0+ (API 24) covers the target audience of network professionals. The native binary is compiled for arm64-v8a and armeabi-v7a. Battery and wake lock handling ensures tests complete on locked devices.

Outcome

The most complete iperf3 implementation on the Android Play Store. Used by network engineers for LAN, Wi-Fi, and mobile broadband testing. Part of the iPerf3 product family alongside the Apple version.