Pepti vs Regimen: which peptide tracker fits you?

By Tessaro Pty Ltd, the maker of Pepti · Reviewed September 2026

This comparison is written by the maker of Pepti, one of the two apps. The Regimen facts below come from its public website, its App Store listing and its stated privacy claims as read in September 2026; products change, so verify current details on Regimen's own pages. We have credited Regimen for what it does better than us and stated our own limits plainly. A comparison written by one side is not neutral by default, so we have tried to make ours checkable: every Regimen claim is dated and points to a public page you can open yourself, and where we could not verify something we left it out rather than guess.

The comparison

How the two apps are built differently

The clearest way to understand the choice is to look at where your data lives. Regimen is account-based: you create an account, and your protocol is stored on its servers under the commitments in its privacy policy, which states encryption at rest and in transit, that data is never sold, and that you can export or delete it (Sep 2026). That model makes cross-device sync and a web presence straightforward, and it is how most modern apps work. Pepti takes the opposite approach: there is no account and no cloud sync, so the record lives on your device apart from optional AI coach conversations, which are sent to Pepti's server.

Neither design is simply better; they fail in different ways. A server-backed app can be breached, or its policy can change hands, but it can also restore your history to a new phone. A device-only app cannot leak from a server it does not have, but a lost phone with no backup loses the record. The right answer depends on which risk you would rather carry, and that is a personal call rather than a feature score.

Where Regimen is stronger

Regimen is free to start, and that is not a small thing: you can track your first compound without paying, which lowers the barrier to keeping any record at all. It ships on both iOS and Android (Sep 2026), so it is the obvious choice if you are not on an iPhone. It supports multi-compound stacks for people running several things at once. And it runs the largest content operation in this niche by a wide margin (Sep 2026) — per-compound pages and a couple of hundred articles — so if you want to read your way into a topic before you track it, there is more to read there than anywhere else, ours included. If breadth of guides and cross-platform reach are what you need, Regimen is the stronger pick and we will say so plainly.

That content is also structured for finding rather than browsing: dedicated pages per compound and per topic, published across several languages (Sep 2026). If reading comes before tracking for you, that depth is a genuine advantage, and no other app in this category — Pepti included — matches it.

Where Pepti is stronger

Pepti's difference is architectural rather than a longer feature list. It has no account, and apart from optional AI coach conversations, which are sent to Pepti's server, there is no server-side copy of your protocol: nothing to breach, nothing to sell, nothing held under a policy that could change later. That only matters if it matters to you, and for many people it will not. Our evidence pages cite their sources with PubMed links and honest counts rather than assertions. We hold a strict no-dosing-guidance design: the app and the site do the arithmetic on a figure you already have and never supply one. And there is a single price with no upsell tiers — what you pay is what you get. For a private, measurement-only tool with cited evidence, that is the trade Pepti is built for.

The practical upshot of the no-server design is small but concrete: there is no shared account to secure, no cloud outage that can hide your history, and no second copy of your protocol beyond the one in your hand. Paired with the strict no-dosing rule, that makes Pepti a narrow, deliberate tool rather than a platform — it does the reconstitution and rotation arithmetic, keeps the log, and stops there.

Who should pick which

There is no single winner here, only a fit. In short:

For the wider field, see how Pepti compares to other trackers, try the free reconstitution calculator, or read more about the Pepti peptide tracker.

Common questions

Is Regimen free?

Regimen is free to download and free to use for one compound (Sep 2026). Multi-compound tracking is a paid premium tier, and its price is not displayed on Regimen's website, so you would need to begin the signup flow to see it. Check Regimen's own pricing for the current figure.

Does Pepti have a free tier?

No. Pepti is paid: $19.99 a month or $89.99 a year, with no free tier. If cost is your deciding factor, Regimen's free-for-one-compound option is the honest choice, and it is not the one we sell.

Which is more private?

It depends on what you count as privacy. Pepti has no account, and apart from optional AI coach conversations there is no server-side copy of your protocol to lose, sell or hand over. Regimen is account-based and states that data is encrypted at rest and in transit and never sold, with export and deletion available (Sep 2026). Pepti's is an architectural design with one stated exception; Regimen's is a policy commitment. Read each app's own policy before deciding.

Does either tell you what dose to take?

Pepti does not, anywhere, by design: you enter the figure you already have and it does the arithmetic. Regimen publishes dose and titration guides on its website (Sep 2026). Neither app's content is medical advice, and the figure is a matter for whoever directs your use.

Can I use Pepti on Android?

No. Pepti is iOS only, requiring iOS 17.2 or later. If you are on Android, Regimen ships an Android app and is the option to look at.

Both apps are actively maintained and both do the core job well. If this page has done its work, it has narrowed the choice to the one axis that actually divides them: free-to-start breadth on a server, or paid privacy on your device.

Not medical advice. Pepti is a record-keeping and measurement tool, not a medical device.

Pepti