WaveCrux

WaveCrux is a modern, high-performance waveform viewer for digital design and verification engineers. Open VCD, FST, GHW, LXT and LXT2 simulation traces directly on your iPhone or iPad — review a regression during a meeting, triage a CI failure from anywhere, or walk through a trace without opening your laptop.

GET STARTED IMMEDIATELY
Tap "Open Sample Waveform" on the welcome screen to explore a bundled trace with five decoded protocol buses — no files of your own needed.

WAVEFORM VIEWING
• Native Rust parsing engine — large multi-million-event traces open fast
• VCD, FST, GHW, LXT and LXT2 file formats
• Smooth pinch-to-zoom and pan, tuned for touch
• Full design hierarchy browser with search and filtering
• Cursors, markers, and time measurements
• Value formats: hex, decimal (signed and unsigned), binary, octal, ASCII, and enum translation
• Fixed-point and floating-point buses drawn as analog curves

PROTOCOL DECODERS
• Serial: UART, SPI, I2C
• Buses: AXI4-Lite, APB, AHB-Lite, Wishbone
• RISC-V instruction decode
• Decoded transactions overlay directly on the waveform

ANNOTATE AND SHARE
• Add a callout, arrow or shaded band to a signal at a moment in time; it stays anchored as you pan and zoom
• Notes record the value the signal had when you wrote them, and flag themselves when a re-run changes it
• Share Annotated Waveform sends your notes and the trace they refer to as one small file, openable on desktop or in a browser

GTKWAVE FRIENDLY
• Import GTKWave .gtkw session files — signal lists, groups, colors, and formats come across
• Reads GTKWave translate filter files

BUILT FOR MOBILE
• Open waveform files straight from Mail, Slack, AirDrop, or the Files app
• Layout adapts from iPhone to iPad multi-pane
• Sessions preserve your signal selections, formats, cursors, and zoom

PRIVACY
• No account, no sign-in, no ads
• Your waveform files never leave your device
• Anonymous usage counts help decide what to build next. You are asked on first launch, the switch is in Settings → Privacy, and the complete list of what is counted is at edacrux.app/telemetry — never file names, signal names, or anything that identifies you

Available in English, Simplified Chinese, Japanese, and Korean.

WaveCrux is also available for macOS, Windows, and Linux — visit wavecrux.app to learn more.