How we built the Index.
How the GLP‑1 App Privacy Index 2026 chose its 53 apps, where each field comes from, and its limits. Every listing judgement in the table rests on a sentence quoted from that app’s App Store description, and the quote is in the data next to it. Findings · Full table
Who made it
Max HP, which makes a GLP‑1 tracker for iPhone. That makes us a competitor of every app in the Index. To keep that from shaping the results, every field is either copied from Apple’s page or backed by a quote, each group follows a stated rule, and Max HP’s own row is shown separately and left out of every count. No developer paid to be included or left out.
Which apps are in it
We searched the US App Store on 3 November 2026 for GLP‑1, the medication names and tracker terms, and kept apps whose main job is logging GLP‑1 doses. Apps that mainly track peptides, and apps from drug makers, were left out. From those, three groups:
- Most ratedThe 20 apps with the most US ratings on the read date.
- Privacy claim, 10+ ratingsThe other apps with at least 10 US ratings whose listing makes a privacy claim, such as “private”, “stays on your device” or “no account”.
- Privacy-first or namedApps with fewer ratings whose listings make the strongest privacy claims we found, such as no account, no server or offline. GlowBack is also here, as a tracker we had already been following.
Where each field comes from
- Label fieldsCopied from the App Privacy section of each app’s US App Store page: which sections the label shows (Data Used to Track You, Data Linked to You, Data Not Linked to You, Data Not Collected) and the categories under each. For what the sections mean, see Apple’s App Privacy Details.
- Health & FitnessWhich section, if any, lists the Health & Fitness category.
- Privacy claimYes if the description calls the app private or makes a privacy promise. The sentence is quoted.
- Account, storage, backupsWhat the description says about sign‑in, where data is kept, and iCloud or other backups, each with the sentence it rests on. “Not stated” means the description doesn’t say. It doesn’t mean the answer is no.
- AI featuresYes if the description advertises an AI feature. The sentence is quoted.
- Ratings, seller, version date, policy linkFrom the same page and Apple’s public lookup service, on the read date.
A script reads each saved listing, checks that every quoted sentence appears word for word in that listing, and writes the CSV and the table. If a quote isn’t found, the build stops.
Limits
- Labels are self-reported.Each one is the developer’s own answer. We didn’t test what any app sends over the network.
- Labels cover data sent off the phone.They don’t describe what an app keeps on the device or what goes into your iPhone backup, which is why we read the listings for those.
- Listings are marketing.A privacy policy can say more than a description, and some apps explain storage and backups only in their policy or in the app. We link each policy and didn’t score it.
- One country, one day.US App Store, 3 November 2026. Labels and listings change with app updates.
- No score.We don’t rank the apps. What matters differs between people, so the Index shows the fields and leaves the weighing to you.
Corrections and updates
Developers can email help@maxhp.me with a correction. We check it against the App Store page, update the row and record the date, the app and the old value in the changelog. The Index is re-read once a year.
Updated