PepCue vs Glapp.
Glapp is the comparison where price does not decide anything. Its core tracking is free, as PepCue's is, and both lean on published research rather than on marketing. The difference is scope. Glapp is built for semaglutide and tirzepatide and goes deep on them: medication level curves, predictions of when hunger and cravings will shift, and an AI feature that searches clinical trials to answer GLP-1 questions. PepCue grades compounds across many classes on one published model, which matters most for the compounds that have few trials to search.
Last checked September 2026. Competitor features and pricing change, so verify on their own site or App Store listing before you decide.
You track anything beyond semaglutide or tirzepatide, you reconstitute from vials, or you want each compound's evidence graded on a disclosed model rather than answered on demand.
You are on semaglutide or tirzepatide, you want level curves and shot-phase predictions built specifically for those drugs, and you want weight syncing with Apple Health or Health Connect. Glapp does that with free core tracking. PepCue syncs weight with Apple Health on iPhone, but not with Health Connect on Android.
Checked against Glapp's website and App Store listing in October 2026, and their column comes from those two sources. We have not printed prices, ratings or review counts, and we have not tested the answers its AI feature gives.
Side by side, verifiable rows only.
| PepCue | Glapp | |
|---|---|---|
| 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. | Free core tracking, including injections, dosage history, weight and side effects. A paid tier, Glapp Max, adds weekly progress reports and goal predictions. |
| Account required | Not required. Tracking starts without an account, and the browser calculators need no sign-up either. | Not verified |
| Platforms | iPhone and Android apps, plus this website, where the calculators and the evidence library run with no install. | iPhone, Android and the web, with an Apple Watch app. |
| Scope | Peptides, GLP-1 medications and TRT on one timeline, with 69 compounds profiled on the website. | GLP-1 medications: semaglutide and tirzepatide, branded and compounded. |
| Estimated levels | Estimated levels charted from the doses you logged, alongside weight trends. | Medication level curves for semaglutide and tirzepatide, which its site says draw on clinical pharmacology data and peer-reviewed research. |
| Appetite and phase predictions | Not offered. PepCue charts what you logged and does not predict appetite or side effects. | Body Phases predicts hunger, cravings and energy shifts across the shot cycle. |
| AI assistant | PepCue AI, an in-app assistant, answers questions about what you have logged. A safety filter turns away dosing, sourcing, diagnosis and medical-advice questions before they reach the model. | Glapp Wisdom, an AI feature that searches clinical trials and peer-reviewed research to answer GLP-1 questions. |
| Health app sync | Apple Health on iPhone: with your permission PepCue reads weight, body composition, heart rate, sleep and active energy, and can save logged weight back. Google Health Connect sync is not advertised. | Weight syncing with Apple Health and Health Connect, including compatible smart scales. |
| 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 |
| Affiliate codes or sponsorship | None. PepCue sells no peptides, ranks no vendors, takes no kickbacks and places no affiliate codes. | Its site says it is subscription funded and free from pharmaceutical sponsorship. |
| Where your data lives | Protocols, doses, inventory, weights and check-ins are stored on your device rather than on our servers. | Syncs across devices with encrypted syncing, per its site. Its App Store privacy label lists health and fitness data among the data linked to you. |
What PepCue does differently.
With price off the table, the useful question is what each app is grading, and for whom. Glapp is a specialist. Semaglutide and tirzepatide are among the best-studied drugs in this whole field, with large randomised trials behind them, so an app built only for them can draw on a deep literature for its level curves and its answers. That is a sound design, and for someone on one of those two drugs it is hard to argue with.
PepCue is built for the person whose protocol does not stay inside that literature. Many compounds people track alongside a GLP-1 have deep animal data and little or no controlled human evidence. A search over clinical trials returns very little for them, and the honest output is a grade that says so. Every compound on PepCue carries an S to F tier computed from six scored axes: human evidence, preclinical depth, mechanism confidence, safety clarity, regulatory clarity and practical relevance, with the model, thresholds and a worked example published.
The format of the answer differs too. Glapp Wisdom answers a question when you ask it, drawing on research. A PepCue grade is computed in advance, written down and the same for every reader, so two people looking at a compound see the same verdict and can argue with the same axes. Across 69 profiles there are 306 cited sources, and a generated index of 274 unique PubMed records is re-resolved against live PubMed by an audit script in the repo.
The practical layer differs at the vial. PepCue's 9 calculators run free in a browser with no account, covering reconstitution, blends and unit conversion for compounds that arrive as powder, as well as GLP-1 titration and pen clicks. Tracking data stays on your phone, and there are no affiliate codes, no vendor rankings and no dosing guidance anywhere on the site.
Where Glapp is stronger.
For semaglutide or tirzepatide alone, Glapp is the more specialised tool, and the specialisation shows. Level curves built for those two drugs, Body Phases predictions of when hunger, cravings and energy will shift, and side effect tracking tuned to GLP-1 treatment are all things a multi-compound tracker approaches more generally.
Health platform sync is a clear advantage. Glapp syncs weight with Apple Health on iPhone and Health Connect on Android, including from compatible smart scales, so weigh-ins arrive without typing. PepCue reads weight from Apple Health on iPhone, but Health Connect on Android is not advertised.
Glapp also runs in a browser as well as on phones, with an Apple Watch app, and its AI feature lets you ask a GLP-1 question in your own words and get an answer drawn from research. PepCue AI answers questions about your own log rather than searching trials. On incentives the two are closer than most pairs on this site: Glapp's stated independence from pharmaceutical sponsorship is a stance PepCue shares.
FAQ.
Is Glapp free?
Glapp's core tracking is free, and a paid tier called Glapp Max adds weekly progress reports, milestones and goal predictions, according to its site. We do not print its prices. PepCue is free to use, and a full protocol can be run without paying.
Does Glapp track peptides as well as GLP-1s?
Glapp lists semaglutide and tirzepatide, branded and compounded, as the medications it supports. PepCue tracks research peptides, GLP-1 medications and TRT side by side. If your protocol is only semaglutide or tirzepatide, Glapp's focus is an advantage rather than a limit.
Which is better for understanding GLP-1 research?
For semaglutide and tirzepatide, both draw on a large trial literature. Glapp answers questions on demand through an AI feature; PepCue publishes graded profiles with citations audited against PubMed. The difference grows for compounds beyond those two, where there are few trials for any tool to draw on.
Does PepCue sync weight with Apple Health or Health Connect?
On iPhone, yes: PepCue reads weight from Apple Health and can save logged weight back. Health Connect on Android is not advertised, so Android weigh-ins are entered in the app. Glapp offers weight sync on both platforms.
Last checked September 2026. Competitor features and pricing change, so verify on their own site or App Store listing before you decide.