CoffeeHand-roast logbook

Log every hand-roast so you can repeat the good ones

Record beans, heat, timing, first and second crack, and weight loss for each roast, so you can reproduce a great batch from numbers instead of memory.

US$5, bought once. Payment is handled by Gumroad. JPY pricing is planned for the future Google Play editions.

From buying it to using it offline

  1. Buy on Gumroad and your license key arrives in the receipt email.
  2. Swap that key for an unlock code at ektopos.app/redeem, then paste the code into the app.
  3. You need the internet only the first time (about 10–12 MB). After that it runs with no signal.
Read the full steps

What it does

  • Record origin, green weight, heat, phase times, first/second crack, and drop
  • Get the weight-loss ratio from before-and-after weights
  • Line up past logs to find what made the good cups good

What it does not do

  • Works offline · no account · one-time purchase · no tracking · no ads
  • Does not control a roaster or read a thermocouple — a manual logbook for recording and review
  • It will not tell you the right roast; your palate sets the target, the tool only holds reproducibility

When it helps

Home roasters on a hand-net or hand-crank who want to reproduce their best batch