Trash

Happy to pay money for something that works. Unfortunately this app for coffee extraction doesn’t. The back end calculation is simply off. My TDS is 1.15, my dose is 37.5 and my end brew weight is 514. Using a calculator you arrive at about 15.75% extraction, but the “tool” says 16.4%. This will make you a worse brewer. Also, you’re forced to set a LRR, instead of having this being a deliverable. You can’t adjust the water weight and the end beverage weight independently. These numbers are locked. Another flaw.

One way in which VST could improve the app for some, while allowing a greater use, and being an industry leader once again, would be to allow for a hundredth place in the dosing. There are more scientific scales like the OHAUS SCOUT or the U.S. SOLID 5000g/0.01g being seen in the industry as coffee is increasingly looked to as a science. With doses as small as 12g in pour overs and espresso, the difference of a tenth of a gram is nearly a percent of the mass. The difference between tenths of a gram in an extraction yield percentage reading is also considerable at around a quarter of a percent. Of course most people brewing coffee are not currently using a scale with readings to the hundredth of a gram, but if the app allowed for such, there would almost certainly be an eventual increase in the amount of people who found it a useful tweak. After all, there are more brewers now who are aiming for previously unattainable levels of accuracy in their brewing and charting methods.

This app does very little beyond allowing you to buy plug-ins that cost significant money.

Coffee mode LRR. Why it cannot be set to zero? I think it could be set to zero.

Convenient and simple to use!

Please update, thanks.

You cna get all this info on-line just google it. App is useless.

This app only includes 'water mode'. If you want any of the other 'modes' (including coffee mode), you'll need to pony up another $30.00.

and continually upgraded to be as accurate AND easy to use as possible. Every specialty coffee shop/roaster should be on the same page as VST.