What Is ZAP?
ZAP is a precision protocol tracking app for people on TRT (testosterone replacement therapy) and peptide protocols. It was built because the existing options — notes apps, spreadsheets, generic fitness trackers, and memory — were not adequate for managing a sophisticated pharmacological intervention that depends on timing, consistency, and data.
At its core, ZAP does three things that most tracking tools don't:
- Serum level modeling — ZAP uses pharmacokinetic math (half-life calculations, ester-specific release profiles) to estimate your current serum testosterone or peptide levels in real time, based on your logged injection history. This gives you a continuous picture between blood draws rather than just two data points per year.
- Integrated protocol logging — injection date, time, dose, site, compound, and ester all live in one place alongside your blood work results and daily wellbeing markers. When you need to interpret a lab result, all the context is already there.
- Privacy-first architecture — your hormone data never leaves your device unless you choose to export it. No accounts required for basic use. No cloud sync unless you want it. Your protocol is nobody's business but yours and your physician's.
ZAP is not a medical device and does not provide medical advice. It is a precision logging and modeling tool for people who are already working with a physician and want to be informed, data-driven participants in their own protocol management.
What Does ZAP Track?
ZAP is built around the compounds that people actually run, not a generic medication list. Supported compounds include:
- TRT esters — testosterone cypionate, testosterone enanthate, testosterone propionate, testosterone undecanoate, and any custom ester you define with a specific half-life
- GLP-1 class peptides — semaglutide, tirzepatide, retatrutide (dose escalation tracking included)
- Healing peptides — BPC-157 (Body Protection Compound), TB-500 (Thymosin Beta-4), and similar tissue repair compounds
- GH secretagogues — ipamorelin, CJC-1295 (without DAC), sermorelin, and combination stacks
- Skin and cosmetic peptides — GHK-Cu and other topical or injectable peptides
- Custom compounds — define any compound with a name, dose unit, and half-life and ZAP will model it like everything else
In addition to compound tracking, ZAP logs blood work results (testosterone, estradiol, hematocrit, PSA, SHBG, and any lab you want to track over time), personal records and performance markers, body composition trends, and daily wellbeing ratings that let you correlate subjective experience with protocol data.
Who Uses ZAP?
ZAP is built for anyone running a protocol that involves precision dosing, consistent timing, and meaningful data collection. In practice, that includes:
- TRT patients — from new starters who want to log their first cycle correctly to experienced patients who have been on TRT for years and want better tools for protocol optimization and physician communication
- Peptide researchers — people running BPC-157, TB-500, ipamorelin/CJC-1295, or GLP-1 class peptides who want to track dose escalations, cycle lengths, and outcomes rather than working from memory
- Performance athletes and body composition optimizers — people who track strength, measurements, and body composition as part of a broader protocol and want all their data in one place
- Biohackers and longevity-focused individuals — people running sophisticated multi-compound protocols who need a tool that can handle complexity without requiring a spreadsheet engineering degree
The common thread is not the specific protocol — it's the mindset. ZAP is for people who understand that a sophisticated pharmacological intervention deserves sophisticated tracking, and that the data you log today is what makes your decisions in month six intelligent rather than guesswork.
Why Does Tracking Your Protocol Matter?
The case for tracking comes down to a simple asymmetry: your body is running a continuous pharmacokinetic process 24 hours a day, and your ability to understand and optimize that process is entirely dependent on the quality of your data.
Consider the difference between two people on identical TRT protocols after six months. The first person has logged every injection with a timestamp, drawn blood at trough consistently, and tracked their estradiol and hematocrit across six draws. The second person injects more or less weekly, has had blood drawn twice at unknown times post-injection, and is relying on memory to reconstruct their protocol history for their physician. These two people are not managing the same protocol. They are managing the same prescription with completely different information quality.
The math is not complicated. Testosterone cypionate has a half-life of approximately 8 days. Missing an injection by 36 hours shifts your trough by a meaningful amount. Allowing your injection interval to drift produces serum oscillations that can drive estradiol spikes on one end and trough symptoms on the other — symptoms that are easily attributed to the wrong causes if you don't have the timing data to correlate them.
Data versus vibes. ZAP is for people who chose data.
Blood work trend data compounds over time in a way that single draws cannot. Your hematocrit at any one point is a number. Your hematocrit across eight consecutive draws is a direction — and a direction you can act on before it becomes a problem rather than after. The same logic applies to estradiol management, PSA monitoring, and the subjective wellbeing markers that tell you whether your protocol is producing the quality of life improvements it was supposed to.
ZAP is the infrastructure for that data. It doesn't make decisions for you. It makes the data available so that you — and your physician — can make decisions based on something other than a vague recollection of how things seemed to be going.