For most UK users the deciding factor is not features but whether the record survives a change of supply. People routinely move between an NHS prescription, a private clinic and a high-street pharmacy. Pick a tracker that is not tied to whoever prescribes, so the weeks you have already logged move with you rather than starting again.
Why the UK question is different
Most of the apps in this category were built for a US market, and most of the comparisons written about them were too. That matters less than it sounds for the tracking itself, and more than it sounds for everything around it. A British reader is rarely choosing between competing subscription bundles. They are more often managing a supply route that changes.
Treatment in the UK reaches people through several doors. Some routes run through the NHS, following NICE guidance on who is eligible and when. Others run privately, through an online clinic or a pharmacy. It is common to start on one and move to another, or to change pharmacy while staying on the same medicine, and the paperwork does not follow you when you do.
That is the practical test to apply to any tracker on this list. If the app is attached to a particular provider, a change of supply means a change of app, and the record you have been building since your first week is the thing you lose.
How the main apps compare
The main GLP-1 trackers, feature by feature
A chosen set of dimensions rather than an exhaustive feature comparison, and it deliberately leaves out food-database depth, which is better judged against a dedicated food logger than against the apps here. Every cell, including Veya's, is stated as recorded in the underlying research file; "unknown" means unverified, not absent.
| Feature | Veya | Shotsy | MeAgain | Glapp | Pokii |
|---|---|---|---|---|---|
| Dose logging | Yes | Yes | Yes | Yes | Yes |
| Dose reminders | Yes | Yes | Yes | Yes | Yes |
| Escalating reminders | Yes | No | No | Not verified | Not verified |
| Injection site rotation | Yes | Yes | Yes | Yes | Yes |
| Side-effect logging | Yes | Yes | Yes | Yes | Yes |
| Weight logging & charts | Yes | Yes | Yes | Yes | Yes |
| Body measurements | Yes | Not verified | Not verified | Not verified | Yes |
| Data export | Yes | Yes | Not verified | Not verified | Not verified |
| Food logging | No | Partial | Yes | Partial | Partial |
| Estimated medication-level curve | No | Yes | Yes | Yes | Yes |
| Provider-neutral | Yes | Yes | No | Yes | Yes |
* Not verified means we could not confirm this either way from the app’s own published material. It does not mean the feature is absent.
Where each one genuinely wins
No app on this list is the right answer for everybody, and the honest version of a roundup says where each rival is stronger rather than pretending one sweeps the board.
Shotsy's estimated medication-level chart is, in our view, still the best implementation in the category, and if that curve is the thing you actually open an app for, that is a real reason to choose it. Glapp ships an Apple Watch app, which Shotsy does not, and it added an importer for bringing a Shotsy history across. Pokii is the thinnest client of the set, which is a virtue if you want to log a dose and get out.
MeAgain is the broadest of them, and it also sells GLP-1 medication alongside the tracker. That is not a criticism in itself, and plenty of people are happy with it, but it is the thing to weigh if your supply route is likely to change, because provider neutrality is exactly what stops a record being stranded.
Our assessment is that all of these are best paired with a dedicated food logger rather than expected to replace one.
Where Shotsy wins Estimated medication-level chart covering semaglutide, tirzepatide, liraglutide and dulaglutide. Supports CSV export.
Where MeAgain wins Integrated food logging with barcode scanning and fibre tracking. Apple Health integration.
Where Glapp wins Vial-level supply tracking. Clinical-trial and peer benchmarking.
Where Pokii wins Covers retatrutide and custom medications. Native iPad app.
Do I need a different tracker if I switch from private to NHS supply?
Not if the tracker is provider-neutral. An app that is not tied to whoever prescribes will carry the record across unchanged. An app supplied by a particular clinic or seller may not.
Does a tracker app tell me what dose to take?
No, and you should be wary of one that implies it does. Dose decisions belong to your prescriber and to the patient information leaflet supplied with your medicine. A tracker records what happened.
Are these apps available in the UK?
The apps compared here are listed on the UK App Store. Ratings and review counts quoted in this category are usually US storefront figures, so treat them as a rough signal of scale rather than a UK popularity ranking.