PepCue vs OptiPin.
We could not verify OptiPin's current feature set or pricing from public information, so their column below is blank rather than invented. The useful thing to compare is what you end up holding after months of logging. An injection log answers the question of whether you stayed consistent. PepCue is built so that the same record also answers what you were taking, at what concentration, at what cost, and how strong the evidence behind it was.
Last checked September 2026. Competitor features and pricing change, so verify on their own site or App Store listing before you decide.
You want the record to be provider-ready, you want the vial math attached to it, and you want the compound itself graded on a published evidence model.
OptiPin already fits how you work and your history lives there. Consistency is the outcome that matters with any protocol, and the app you already open beats the one you would have to learn.
We have not verified OptiPin's features, pricing, ratings or review counts. Every cell in their column reads “Not verified” for that reason. Check their own listing.
Side by side, verifiable rows only.
| PepCue | OptiPin | |
|---|---|---|
| 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 |
| Schedules and reminders | Per-compound schedules with reminders, a calendar that stamps itself as you log, and a month view of every dose taken. | Not verified |
| Estimated levels from logged doses | Charted from what you logged, alongside weight trends and week-over-week change. | Not verified |
| Provider-ready record | Compounds, doses, dates, inventory and weights in one timeline you can take to an appointment, and pages print clean for a PDF. | Not verified |
| Reconstitution and syringe math | 9, free in the browser with no account and no install: reconstitution, blends, GLP-1 titration, pen clicks, vial longevity, unit conversions and BAC water. | 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 |
| Affiliate codes or vendor rankings | None. PepCue sells no peptides, ranks no vendors, takes no kickbacks and places no affiliate codes. | Not verified |
| Where your data lives | Protocols, doses, inventory, weights and check-ins are stored on your device rather than on our servers. | Not verified |
What PepCue does differently.
Adherence tracking is the easy half of the problem and it is worth saying that plainly: any decent injection tracker will get you streaks, reminders and a calendar, and those are genuinely the features that change outcomes. Consistency beats optimisation, and an app that keeps you consistent has done most of its job.
The harder half is what the record is worth when you show it to someone. A row saying you injected on a Tuesday is thin. A row saying which compound, at what concentration after reconstitution, in what syringe units, from which vial, at what cost per dose, is a clinical artefact. PepCue is built around that second version, and the site's pages print clean to PDF so a provider can read a compound profile without the site chrome getting in the way.
Underneath sits the evidence layer. Every compound carries an S to F tier computed from six scored axes: human evidence, preclinical depth, mechanism confidence, safety clarity, regulatory clarity and practical relevance. The model is published in full with its thresholds and a worked example, so a grade can be argued with on specifics. Across 69 profiles there are 306 cited sources, and a generated research index holds 274 unique PubMed records re-resolved against NCBI by an audit script in the repo. Safety clarity scores how well a safety profile is known rather than how safe something is, so a compound with no human toxicology sits at the floor.
The commercial position matters here too. Nothing on PepCue is for sale, no vendor is ranked, no affiliate code appears anywhere, and no page tells anyone what to take. Sites in this category usually make money by sending traffic to suppliers, and that is precisely the pressure that turns an evidence grade into a sales aid.
Where OptiPin is stronger.
We have not verified OptiPin, so we are not going to credit it with strengths we cannot confirm, and we are not going to imply it lacks them either. Read the blanks as ignorance on our side.
The generic case for an incumbent stands regardless. Your logged history has real value, migrating it is unpleasant and often lossy, and a tracker you have already built a habit around will beat a better one you forget to open. Switching apps mid-protocol also breaks the continuity of exactly the record you were trying to build.
If OptiPin is working, the low-cost move is to keep it and use the free parts of PepCue beside it. The calculators and the whole compound library run in a browser with no account, so there is nothing to install and nothing to migrate.
FAQ.
Is PepCue better than OptiPin?
We cannot answer that honestly, because we have not verified OptiPin's current features or pricing. What we can describe is PepCue: free to use, a graded compound library with the scoring model published, 9 free browser calculators with no account, and no affiliate codes or vendor rankings.
Does PepCue track injection sites?
PepCue tracks compounds, doses, dates, schedules, inventory, cost and weight in one timeline. If site rotation specifically is the feature you need, check whether the app you are considering handles it the way you want, and do not assume from this page either way.
What makes a record provider-ready?
Compound, concentration after reconstitution, dose in the units actually drawn, dates, and what else was running at the same time. A date-and-checkmark log leaves a clinician guessing at all of that. PepCue pages also print clean to PDF so a profile can go to an appointment on paper.
Can I use PepCue without installing anything?
Yes. The calculators, the compound library, the tier board and the methodology page all run on the website with no account and no install. The app adds tracking, reminders and history around them.
Last checked September 2026. Competitor features and pricing change, so verify on their own site or App Store listing before you decide.