This is the lite version of the Coffee Brix Calculator. This version allows you to compute the extraction yield of a brewed coffee. This app accurately converts Brix to TDS (Total Dissolved Solids) using an affordable analog Brix refractometer.

This app also considers the residual volume left (grounds and water) to estimate the percentage of water passed (brewed). It estimates an adjusted TDS and also the extraction yield equation considers the absorbed water by the ground coffee (water within the grounds and water between the grounds).

This free app contains advertisements, for example, by double-tapping on the graph you can share it (rewarded ad).

The graph contains reference lines as the golden cup, and the ideal extraction (18-22+1%).

Some of the equations implemented in this app are described in my work entitled: Converting Brix to TDS - An Independent Study, available at:

https://www.researchgate.net/publication/335608684_Converting_Brix_to_TDS_-_An_Independent_Study

(DOI: 10.13140/RG.2.2.10679.27040)