Pep AI alternative: a dose record, not a lifestyle suite

One app, or one job

Pep AI's listing reads like a health suite that happens to include injections. Alongside inventory and a peptide calculator, it describes calorie, protein, carb, fat and fibre tracking; a meal scanner that logs macros from a photo; hydration logging with progress rings and streaks; side-effect logging across 15+ symptoms with severity ratings; progress photos; daily energy, sleep and mood check-ins; a research library of 75+ compound profiles; and a chatbot for general educational questions.

That is a lot of product, and for someone running a GLP-1 who is also counting protein and watching hydration, having it in one place is a real convenience rather than bloat.

Pinned does one job. It records what you took, when, where you put it, and how much is left in the vial — plus weight, bloodwork and quality-of-life markers if you want them. There is no meal scanner, no macro tracking and no chatbot.

The numbers, as of 30 July 2026

Two of these rows matter more than the rest. 200 MB is the largest download in this set — a consequence of how much the app does, not a defect. And iOS 16.4 means Pep AI installs on iPhones that Pinned refuses; Pinned's iOS 18.0 floor is the single biggest reason someone might be unable to use it at all.

What you pay to reach

Pep AI's own App Store description states plainly that a paid subscription is required to access its tracking features. That is a clear, honest position and worth knowing before you install: the trial-and-see path is short.

Pinned is free for your first compound with no time limit — the log, the schedule, the reminders and the site rotation all work without paying. Pinned Pro unlocks unlimited compounds and stacks, the full calculator, advanced scheduling and CSV or PDF export. If you run exactly one compound, Pinned may never cost you anything.

Neither model is more generous in every case. Pep AI's includes considerably more product behind the paywall.

Scope: where Pinned reaches further

Pep AI is positioned around peptides and GLP-1s. Pinned's ledger also covers testosterone and HRT protocols as first-class categories, plus oral medications and nasal sprays, which matters if your record is not confined to injectables. Pinned also ships in English, Dutch, French and German.

And Pinned's record never leaves the device: no account to create, an optional Face ID lock, read-only Apple Health import limited to what you choose. The cost of that is real — no sync, no server-side backup, and if the phone goes without a backup, so does the record.

FAQ

Does Pinned have any AI features?

No. There is no chatbot, no meal scanner and no AI-generated guidance in Pinned. If AI assistance is what you want from a tracker, Pep AI is built around it and Pinned is not.

Will Pep AI or Pinned run on my older iPhone?

Pep AI listed iOS 16.4 as its minimum on 30 July 2026; Pinned listed 18.0. If your phone cannot run iOS 18, Pinned is not an option for you regardless of anything else on this page.

Can I try Pinned before paying?

Yes — your first compound is free with no time limit, including logging, scheduling and reminders. Unlimited compounds, the full calculator, advanced scheduling and record export are part of Pinned Pro, which renews automatically unless cancelled at least 24 hours before the period ends.

Does Pinned track nutrition or hydration?

No. It tracks weight, bloodwork and quality-of-life markers alongside your dose history, and imports a read-only selection from Apple Health. Calories, macros and water intake are outside what it does.

Which app is smaller on disk?

Pep AI was 200 MB on 30 July 2026, the largest in this category. Pinned's size was not captured in the same snapshot, so no honest comparison is available yet — check the current figure on the App Store listing.