This app is for rewriting XBloom NFC cards and pods. You must use it with original NFC tags contained in either XBloom cards or pods. To start either begin by reading in an NFC tag by touching the read icon on the main page or import a recipe. To import a recipe, open up the XBloom share link in your mobile phones browser, select the share button, and select the XBRecipeWriter app. If you are interested in any other functionality, or if things dont look right, please select the "?" next to each field, which will hopefully explain things better. Keep in mind, not all recipe functionality works with the NFC tags. For example, you cant set 1/2 ratios (e.g. .5) or turn off the grinder. Importantly, the NFC tags are assumed to be 15G of coffee, so the app makes certain volume and ratio adjustments to compensate for that. You can read more by clicking the "?" next to Machine Ratio and/or Total Volume.