Samundra
For OceanOptics spectrometers
Only for Mac
Free
Mac
Samundra reads certain USB spectrometers on macOS. Connect an instrument over USB and the window shows the live spectrum. Samundra speaks to the spectrometer directly using Apple's `IOUSBHost` framework, so no vendor drivers or third-party libraries are required. It is free and open source.
- Live spectrum display with a visible-spectrum color gradient, hover readout of wavelength and counts, peak indicator, and saturation warning
- Pinch to zoom the wavelength axis, drag or two-finger pan to scroll, double-click to reset; settings and zoom state persist across launches
- Prominence-based peak detection with sub-pixel wavelength marks, controlled by sensitivity, anticipated width, and a peak count
- Optional reference lines from the NIST Atomic Spectra Database — 48,000 observed lines from 193 to 1105 nm, ions I through III — filtered by element, ionization state, and line strength
- Integration time from 3.8 ms to 10 s, scan averaging, and boxcar smoothing
- Electric-dark and detector-nonlinearity corrections using the calibration stored in the instrument's EEPROM
- Recording starts automatically whenever a spectrometer is connected
- Save (⌘S) writes a two-column CSV of wavelength and amplitude; ⌘C or right-click ▸ Copy Data puts the same CSV on the clipboard
Ratings & Reviews
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- macOS 27 support
The developer, Twarge LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Twarge LLC
- Size
- 805.2 KB
- Category
- Productivity
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © Twarge