Browser spectrogram workstation
Spectra
A browser-based spectrogram and spectrum viewer for local inspection of bioacoustic recordings, with tunable analysis settings and figure-ready PNG export.
Visit Spectra ↗Bioacoustics field companion
Hear everything.
See it too.
Chirps
Real-time spectrogram and waveform on iPhone and iPad. Now available on the App Store for field researchers, recordists, and anyone interested in bioacoustic data.
Built for the full field session
From live listening to structured notes and export-ready figures, Chirps keeps capture, context, review, and delivery together on one device.
Spectrogram + waveform
See the signal while it is happening
Watch live waveform and spectrogram views update in real time on iPhone or iPad, with responsive controls that stay usable in the field.
Explore feature →Hardware-aware routing
Work with serious external audio gear
Use USB microphones, interfaces, and sound cards with route probing, cached capabilities, and support for the sample rates iOS actually exposes.
Explore feature →Monitoring
Monitor live with passthrough or heterodyne
Switch between direct listening and heterodyne monitoring, then retune the centre frequency without breaking the active stream.
Explore feature →Triggered capture
Capture WAV recordings with pre-trigger context
Save directly on-device with adjustable pre-trigger and post-trigger timing, then keep your recordings organised inside dated field folders.
Explore feature →Offline analysis
Review recordings without leaving the app
Open the Data Review interface for offline waveform and spectrogram browsing, matched closely to the live view you recorded with.
Explore feature →Field context
Keep session notes with the recordings themselves
Write markdown field notes inside Chirps, alongside the day folder and file list, so observations, weather, and workflow context stay attached to the session.
Explore feature →Shareable output
Export spectrogram figures that are ready to use
Generate landscape PNG spectrograms with scientific axes, grid lines, legends, and attribution suitable for reports, notes, or collaboration.
Explore feature →First field run
Get from setup to first stream quickly
Follow the essentials for first launch, route checking, device selection, and the settings that matter before you start a real session.
Explore feature →Full reference
Look up every setting without guessing
Jump into the full settings reference for input, output, recording, layout, haptics, diagnostics, and the details behind Chirps configuration.
Explore feature →App views
Discover Chirps on your device.
Carefully designed to fit your workflow.
More apps
Explore the rest of the app studio.
Tools for thinking and writing, and low-light work, designed with the same emphasis on focus and clarity.
iPad writing tool
Chalks
A digital slate for handwritten notes, diagrams, quick derivations, and board-based thinking on iPad.
Visit Chalks ↗Low-light field utility
Noxtra
A calm monochrome light and colour reference app that also works as a low-light visibility aid during field recording at night.
Visit Noxtra ↗Download Chirps on the App Store.