iPerf3 Client & Server
Test network speed and throughput
Vladimir Chemeris
Description
Measure network performance by testing TCP and UDP speeds in and modes. Conduct bidirectional and reverse tests across Wi-Fi, cellular, or LAN. Validate ISP or VPN changes and identify bandwidth bottlenecks.
Requires access to an iPerf3 server (local, VPN, or remote). This is not a general Internet speed test.
iPerf3 Client & Server brings the standard iPerf3 tool to iPhone and iPad with a clean, native UI. One purchase also unlocks the Mac version.
Measure real throughput across Wi-Fi, cellular, VPN, or LAN. Compare routers and access points, validate ISP or VPN changes, and find bottlenecks.
Key features:
- Client and server modes
- TCP/UDP tests, including bidirectional and reverse
- Advanced controls: duration, parallel streams, bandwidth caps, window size, MTU
- Saved server profiles and favorites
- History with charts and CSV/JSON export
- Detailed metrics: throughput, latency, jitter, packet loss
Built for network engineers, sysadmins, and power users who need accurate, repeatable results.