Practical how-tos and free calculators for people who actually measure — TRT and peptide tracking, reconstitution math, and honest comparisons. No fluff, no medical theatre.
Enter vial strength, BAC water, and your target dose — get the exact insulin-syringe units to draw, on U-100 or U-40. Free, instant, nothing to install.
Open calculator → GuideWhat to actually log on testosterone — doses, sites, bloodwork, weight, and wellbeing — and why a spreadsheet falls apart by week six.
Read the guide → ComparisonA side-by-side for people who track more than food. Macros, peptides, anabolics, cycles, AI logging, price — laid out honestly.
See the comparison → How-toAdd Optimize to your Home Screen in under a minute — iPhone, Android, and desktop, no App Store. Step-by-step, with troubleshooting.
Install guide →Macros, peptides, anabolics, training, weight and wellbeing — with an AI coach that understands biohacking. Install on any phone.