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Cyanometer

Name: Cyanometer
Availability: InStock
Rating: 1 (1 reviews)

Inspired by 18th-century explorers, capture the sky’s intensity, monitor atmospheric clarity, and build your personal archive of observations with complete data privacy.

Science & Education ›

Key Figures

Downloads

59K+

User Rating

1.0/5

Total Ratings

Publisher

Jan-Hendrik von Kuick

Measure the Depth of the Sky

Inspired by 18th-century explorers, Cyanometer turns your device into a scientific instrument to quantify atmospheric clarity and document the beauty of the horizon.

Saussure’s Scientific Legacy

Utilize the original 1789 scale designed by Genevan physicist Horace-Bénédict de Saussure to measure 'blueness' just as Alpine explorers did centuries ago.

A Personal Sky Journal

Every scan automatically archives the date, time, and locality, allowing you to build a historical collection of the atmospheres you have encountered.

The following screenshots and description are sourced directly from the app's official store listing and are the property of the app developer.

App Store

Screenshots

Cyanometer - Cyanometer app interface with a circular blue color scale overlaying a clear sky view — Cyanometer app interface with a circular blue color scale overlaying a clear sky view

Cyanometer - Cyanometer app interface showing a circular blue color scale and menu icons over a clear sky. — Cyanometer app interface showing a circular blue color scale and menu icons over a clear sky.

Cyanometer - Cyanometer app interface with a circular blue color gradient scale for measuring sky intensity — Cyanometer app interface with a circular blue color gradient scale for measuring sky intensity

Cyanometer - The Cyanometer app interface showing a circular color scale over a clear blue sky with trees. — The Cyanometer app interface showing a circular color scale over a clear blue sky with trees.

Cyanometer - A history of saved sky blueness measurements in the Cyanometer app showing dates locations and color scales — A history of saved sky blueness measurements in the Cyanometer app showing dates locations and color scales

Cyanometer - A screenshot of the Cyanometer app showing a blue sky scan with location and date information — A screenshot of the Cyanometer app showing a blue sky scan with location and date information

Cyanometer - A list of recorded sky color measurements with dates and locations in the Cyanometer app. — A list of recorded sky color measurements with dates and locations in the Cyanometer app.

Cyanometer - Settings screen of the Cyanometer app featuring scale selection and a blue circular gradient scale. — Settings screen of the Cyanometer app featuring scale selection and a blue circular gradient scale.

Cyanometer - Help and instructions screen of the Cyanometer app explaining its historical origins and the three measurement modes. — Help and instructions screen of the Cyanometer app explaining its historical origins and the three measurement modes.

Cyanometer - Help page of the Cyanometer app describing functions and scale modes. — Help page of the Cyanometer app describing functions and scale modes.

Description

The original cyanometer was invented by the Genevan physicist and Alpine explorer Horace-Bénédict de Saussure (* 17 February 1740 in Conches; † 22 January 1799) in 1789. It is an instrument for measuring 'blueness', specifically the colour intensity of blue sky. With the measurement it is possible to draw conclusions from the constitution of the atmosphere: the bluer the sky the less the water vapor. Saussures cyanometer consisted out of 53 parts of a circular ring ranging from white over different grades of blue to black (Saussure used Prussian blue). Saussure used his cyanometer for measurements in Geneva, Chamonix und on the Mont Blanc. Alexander von Humboldt used a cyanometer on his expedition to America (1799 - 1804). You can use our Cyanometer in three modes: The modern scale uses distinct grades of blue starting with clear white up to black. The Saussure scale shall give an idea about the colors from Saussures original cyanometer. With the user defined scale own scans of blue skies can be added to an own colored circular ring - an own cyanometer. Each scan is saved inside the app containing information about date, time and locality. So it is possible to compare scans of blue skies from different locations. Privacy notice: No data will be saved or processed outside the app.