Dial-In is a fast, offline-first espresso log for home baristas. Refractometer users get a built-in TDS calculator and extraction yield (EY%) tracking.

Log every variable for every shot — dose, yield, grind size, extraction time, TDS reading, extraction yield (EY%), and taste — in the order you actually work: Prep, Pull, Measure, Refine, Taste.

KEY FEATURES
• TDS calculator — enter your refractometer reading, see EY% computed live
• Extraction yield tracker — every shot's EY% is saved and charted over time
• Brew ratio tracker — auto-computed from yield ÷ dose, displayed as you type
• Built-in shot timer integrated into the logging form
• Ghost Shot reference — see your last shot's stats (TDS and EY% included) the moment you select a bean
• Charts for ratio, extraction yield, time, taste, dose, and grind trends
• Multi-bean compare to see how each bean dials in
• Taste diagnostic slider from Sour to Balanced to Bitter
• Heart toggle to bookmark your God Shots
• Bean management with roaster and origin tracking
• Dark mode by default — designed for early morning use

FOR REFRACTOMETER USERS
If you use a coffee refractometer (VST, Atago, DiFluid, MyTDS), Dial-In does the math for you. Type your TDS%, the app computes your extraction yield using the standard formula (EY = TDS × beverage weight ÷ dry coffee dose). Track EY% over time to see whether your dialing-in is converging.

PRIVACY FIRST
• 100% offline — zero network requests, zero analytics, zero tracking
• All data stays on your device
• No account required
• CSV export and import — your data, never locked in

Built by a solo developer who was tired of using spreadsheets to dial in espresso. Dial-In is by PierDo, a small independent app studio.