Packet Runner

Run real iPerf3 tests on iPhone: measure upload/download throughput, ping, jitter, loss, and stability with live charts and iCloud-synced history.

Packet Runner brings professional-grade network diagnostics to your iPhone with iPerf3, the industry-standard network performance measurement tool.

Measure What Matters • Throughput — Real-time upload and download speed • TCP Latency (Ping) — Pre-test connection latency for TCP tests • Jitter — Packet delay variation (UDP) • Packet Loss — Connection reliability (UDP) • Throughput Stability (Advanced) — Consistency metric from interval throughput analysis with High/Medium/Low labels

Flexible Testing • TCP and UDP protocols • Upload and download directions • Configurable duration, streams, UDP bitrate, and warm-up behavior • Test against local servers or public community servers

Community Servers • Built-in directory of public iPerf3 servers worldwide • Availability-aware server selection • Automatic server health tracking based on recent test outcomes

Track Your Results • Complete test history with filtering • Re-test with one tap • Result Quality scoring • Stability labels (High/Medium/Low) for throughput consistency • Network type capture (Wi-Fi/Cellular)

Sync and Defaults • Test history can sync via iCloud across your Apple devices • Default test values can sync via iCloud (server, port, protocol, mode, duration, streams, warm-up) • Uses your Apple ID; no in-app account required

Privacy First • No analytics, tracking, or advertising IDs • We do not collect or sell personal data • Tests run locally on your device

Perfect for network professionals, IT support, developers, and anyone who needs reliable network diagnostics without command-line tools.