Browser spectrogram workstation

Spectra

A fast, local browser tool for inspecting high-sample-rate bioacoustic recordings, tuning spectrogram generation, reviewing spectrum views, and exporting clean PNG figures.

Apps

Discover the apps

Find the exciting apps that help you in the field and the lab.

Field bioacoustics app Research companion

Chirps

A bioacoustics field companion for iPhone and iPad, built to support sound-centred work with a focused interface and research-aware design language.

Its presentation and supporting material are shaped around scientific use, field workflows, and acoustic interpretation.

iPad app Writing-first notes

Chalks

A digital slate for handwritten ideas, diagrams, derivations, and board-based note making on iPad, built for study, research, and explanation.

Designed around a board-and-slates workflow, clean export, and low-friction writing with Apple Pencil or touch.

iPhone and iPad app Low-light field assistance

Noxtra

A calm monochrome light and live colour reference for ambience use, macro lighting, colour exploration, and low-distraction utility work.

It is also useful as a low-light visibility aid while out in the field recording bats, offering illumination without the harshness of a standard torch-like screen.

Built for review

High-quality spectral inspection without a desktop install

Local audio handling

Open files or folders directly in the browser. WAV decoding preserves the original sample rate for ultrasonic recordings.

Tunable spectrograms

Control FFT size, window family, window samples, overlap, palette, dynamic range, and frequency bounds.

Figure-ready exports

Export the exact rendered view as a PNG for reports, manuscripts, and quick field notes.