PepCue vs Regimen.
We could not verify Regimen's current feature set or pricing, so this page leaves their column blank rather than filling it with guesses. What it argues instead is about stacks. Multi-compound protocols are the reason people look for an app like this, and the uncomfortable fact about most popular stacks is that the combination itself has never been tested. An app that builds a protocol without saying so is helping you execute something nobody has studied.
Last checked September 2026. Competitor features and pricing change, so verify on their own site or App Store listing before you decide.
You are running several compounds together and you want an honest read on whether that combination has ever been tested, alongside the schedules, the blend math and the record.
Regimen already fits how you plan, and you want a builder rather than a verdict. An app you have shaped around your own protocol has value this page cannot measure.
We have not verified Regimen's features, pricing, ratings or review counts, so their column is blank throughout. Check their own listing before treating anything here as a comparison of features.
Side by side, verifiable rows only.
| PepCue | Regimen | |
|---|---|---|
| Price | Free to use. You can run a full protocol without paying, and there is no subscription gate on logging, schedules, the calculators or the evidence library. | Not verified. Check the App Store listing for current pricing. |
| Account required | Not required. Tracking starts without an account, and the browser calculators need no sign-up either. | Not verified |
| Multi-compound schedules | Per-compound schedules with reminders, a calendar that stamps itself as you log, and a month view of every dose taken. | Not verified |
| Blend math for combined preparations | A blend calculator handles per-component concentration on figures you enter. It suggests no amounts. | Not verified |
| Verdict on whether a stack has been studied | Stack pages exist, and most of them conclude the combination has never been tested against placebo or against either component alone. | Not verified |
| Evidence grading | Every compound carries an S to F evidence tier scored on six axes: human evidence, preclinical depth, mechanism confidence, safety clarity, regulatory clarity and practical relevance. | Not verified |
| Scoring model published | Yes. The full six-axis model, the tier thresholds and a worked example on a real compound are published on the methodology page. | Not verified |
| Citations | 306 cited sources across 69 compound profiles, plus a generated research index of 274 unique PubMed records, every one pulled from NCBI and re-resolved against live PubMed by an audit script kept in the repo. | Not verified |
| Compound library | 69 compound profiles covering regulatory status, mechanism, what the published evidence actually shows, and safety. | Not verified |
| Cost tracking | Enter a vial price and PepCue reports per-dose, weekly, monthly and yearly spend plus days of supply left. | Not verified |
| Affiliate codes or vendor rankings | None. PepCue sells no peptides, ranks no vendors, takes no kickbacks and places no affiliate codes. | Not verified |
| Dosing guidance | Never. PepCue explains compounds and does the arithmetic on numbers you enter. It does not tell anyone what to take. | Not verified |
What PepCue does differently.
The mechanics of a multi-compound protocol are not the hard part. Several compounds, several schedules, reminders that do not collide, a calendar that fills itself in as you log, and blend math when two compounds share a vial. PepCue does all of that, and so, presumably, does any serious protocol app.
What PepCue adds is a verdict you may not want. The site carries pages on the stacks people actually search for, and the recurring conclusion across almost all of them is the same: the components have usually been studied alone, and the combination has almost never been tested against placebo or against either component by itself. Claimed synergy is nearly always an inference drawn from two mechanisms existing side by side, not a measured result. Stacking two compounds that each lack human efficacy evidence does not produce a combination with human evidence, it produces an untested combination with an interaction profile nobody has characterised.
Each component still gets graded individually. An S to F tier is computed from six scored axes, the model and its thresholds are published with a worked example, and across 69 profiles there are 306 cited sources, with a generated research index of 274 unique PubMed records re-resolved against NCBI by an audit script in the repo. Preclinical depth can sit high while human evidence sits at zero, and the tier system exists to make that pattern visible rather than to smooth it over.
None of this comes with a recommendation, and that is a deliberate limit rather than a missing feature. PepCue never says what to take or how much. The blend calculator computes on numbers you type and suggests none of them. There are no affiliate codes, no vendor rankings and nothing for sale, which is what makes it possible to publish a stack page whose conclusion is that the stack has never been tested.
Where Regimen is stronger.
We cannot name a verified strength for Regimen, and manufacturing one for balance would be its own dishonesty. The blanks reflect what we do not know.
In fairness to any builder-first app, there is a real argument that evidence verdicts are not the app's job. Someone who has already decided what they are running, with a provider or without one, may want a tool that executes cleanly rather than one that keeps restating that the combination is unstudied. That is a legitimate preference and PepCue is the more opinionated tool because of it.
The incumbent argument applies here as well. A protocol you have already built inside an app represents real setup effort, and rebuilding it elsewhere is friction with no immediate payoff. PepCue's stack pages, compound profiles and blend calculator are free on the web with no account, so you can read the evidence side without moving your protocol anywhere.
FAQ.
Does PepCue recommend peptide stacks?
No. PepCue publishes evidence checks on the stacks people search for, and the conclusion on most of them is that the combination has never been tested against placebo or against either component alone. That is an assessment of the published evidence, not a recommendation for or against, and PepCue never states amounts.
Can PepCue handle several compounds at once?
Yes. Per-compound schedules, reminders, a calendar that stamps itself as you log, a month view of every dose, cost tracking per compound and a blend calculator for combined preparations.
Why would an app tell me my stack is unstudied?
Because it is true more often than not, and because there is nothing for sale on this site, so there is no reason to pretend otherwise. Most popular combinations pair compounds with deep animal data and no human efficacy evidence. Knowing that does not decide anything for you, but it changes what you think you know.
Is PepCue free for multi-compound protocols?
Yes. There is no compound limit behind a paywall, a full protocol can be run without paying, and the blend calculator and every stack page are free on the website with no account.
Last checked September 2026. Competitor features and pricing change, so verify on their own site or App Store listing before you decide.