BatLib vs Chirps Recorder

The BatLib app plays the different ultrasonic calls of most European bats, transformed into the audible range using the heterodyne mixer method. This is particularly useful for comparing directly with the output of the BATSCANNER device to help determine the species. 1. Enter the frequency that your BATSCANNER displays to filter the species 2. Listen to the typical bat call sequences 3. Compare the sound with what you hear from your BATSCANNER 4. Sounds similar? Read additional information about the bat species, such as acoustic characteristics, size, habitat, photos, etc. Further information about our bat products: www.batscanner.ch

Chirps is a bioacoustics field companion for iPhone and iPad. It helps researchers, species surveyors, recordists, students, and naturalists visualise, monitor, record, and review sound in the field without needing a laptop. Use Chirps for live spectrogram and waveform visualisation, external USB microphones and audio interfaces, passthrough and heterodyne monitoring, uncompressed WAV recording, and high-quality spectrogram export for reports. Key features: - Real-time GPU-accelerated spectrogram and waveform display - Support for built-in microphones, USB microphones, and audio interfaces supported by iOS - Automatic audio route discovery and device capability reporting - WAV recording with adjustable ring buffer, pre-trigger, and post-trigger capture durations - Live passthrough monitoring - Heterodyne monitoring with tunable centre frequency - Data review interface for recorded files - Session notes that can be edited from within the app - High-detail spectrogram review with adjustable window width - Two-finger scrolling for waveform and spectrogram inspection in review mode - PNG spectrogram export with scientific axes, grid lines, colour legend. - File sharing through the iOS share sheet - Local diagnostic log for troubleshooting hardware and audio route issues Chirps is designed for field use. Recordings are saved as WAV files in the app’s local storage and can be accessed through the Files app. If iCloud Drive is enabled, iOS can sync those files to your other Apple devices using Apple’s standard system services. This Version: Initial App Store release of Chirps for iPhone and iPad. Includes live spectrogram and waveform visualisation, WAV recording, passthrough and heterodyne monitoring, external audio device support, data review, session notes, spectrogram export, and on-device diagnostics.