Comparison · disclosed bias
Best peptide tracker apps, 2026 — compared
A feature-by-feature look at the trackers people actually search for, including ours. Every competitor cell below is sourced to a specific, dated finding; where we couldn't verify something, it says so instead of guessing.
Feature and pricing comparison
Pulled from a direct competitive teardown (app-store metadata via Apple/Google's own public APIs, plus each vendor's own pricing and marketing pages) and a separate pass reading each app's own public App Store reviews. Both research passes are dated 2026-08-26/27. "Not verified" means the research did not find a sourceable answer — not that the answer is no.
| Tracker | Price model | Subscription? | Account required? | Data stays on device? | Phase / cycle modeling | Vial forecasting | Decision log | Public test suite |
|---|---|---|---|---|---|---|---|---|
| PeptIQ | Free tier + Premium $19.99/mo or $99/yr1 | Yes | Yes — login required2 | Not verified | Not verified as cycle/on-off modeling1 | Yes — vial inventory/calculators1 | No — not found3 | No — not found1 |
| Regimen | Free (1 compound) + Premium $4.99/mo or $39.99/yr1 | Yes | Not verified — but requires an internet connection to run at all2 | No — no offline mode; won't run without a connection2 | Yes — named cycles with alerts1 | Yes — inventory + low-stock alerts (not confirmed as a burn-rate forecast)1 | No — not found3 | No — not found1 |
| Shotsy | Free + Premium $39.99/yr (raised from $29.99/yr post-funding)1 | Yes | Not verified — reviewers describe entering "a lot of personal info" before pricing is shown2 | Not verified | No — narrower scope, a single injectable category, not general multi-compound protocols1 | Not verified / likely not applicable to its narrower scope1 | No — not found3 | No — not found1 |
| PeptidePal | Free to download, in-app purchases — tiers from ~$8.99/mo or ~$29.99/yr; no free trial on any tier6 | Yes | Not verified | Not verified | Not verified as named-phase / cycle modeling — ships curated multi-compound stacks instead6 | Yes — vial run-out estimate, but reviewers report it doesn't always auto-deduct after logging a dose7 | No — not found3 | No — not found1 |
| PepCalc | $9.99 — one time, no subscription found8 | No — flat one-time price, no tiers mentioned on its listing8 | No — "No signup required" per its own listing8 | Yes — "Your data remains on your device" per its own listing8 | No — not described; it's a calculator with saved named protocols and multi-compound blend math, not a scheduler8 | No — no inventory or run-out feature described8 | No — not found8 | No — not found8 |
| PeptideCalc.io | $4.99 — one time, no subscription found9 | No — flat one-time price, no tiers mentioned on its listing9 | No — "Use without creating an account" per its own listing9 | Yes by default — optional iCloud sync can move data off-device if the user turns it on9 | Yes — schedules with titration/cycling windows per its own listing9 | Yes — "runout estimates and low-stock alerts" per its own listing9 | No — ships adherence streaks, not a decision-gate feature9 | No — not found9 |
| Smart Peptide Tracker | Not verified | Not verified | Not verified | Not verified | Not verified | Not verified | Not verified | Not verified |
| SHOTLOG | Not verified | Not verified | Not verified | Not verified | No — fully manual daily entry, no auto-scheduling, per its own reviewers1 | Not verified | No — not found3 | No — not found1 |
| VialMath | Free tier + Power $39 — one time4 | No — $39 once.5 | No account, anywhere4 | Your protocol data stays on your device. The app's own network requests are its version file, a demo file from this site when you open the demo, and — with Power — one licence check that sends your key to Gumroad.4 | Yes — named phases, four schedule types including N-on/M-off cycles4 | Yes — burn-rate projection with a computed reorder-by date4 | Yes — gate checks with a permanent logged-decision record4 | Yes — runs in your own browser at /tests4 |
1 Our competitor teardown research — direct
iTunes/Google Play API pulls and each vendor's own site/pricing page, 2026-08-26.
2 Our app-store review analysis — quoted
directly from each app's public App Store review feed (Apple's public RSS
endpoint), 196 reviews rated ≤3★ read in full, 2026-08-27.
3 Absence noted across both research passes — neither a "decision
log" / gate-check feature nor a public test suite was found described on any
competitor's site, store listing, or review text searched. Absence of evidence,
not confirmed absence — flagged as "No — not found" rather than a stronger claim.
4 This site and the served /app/app.js. The licence check and the update check are described
on Privacy.
5 Power is sold on Gumroad as a single $39 payment, not a recurring one. The app has no renewal or
expiry step: it checks a Power key with Gumroad once, when you enter it (see Privacy).
6 Our competitor teardown research plus a
direct iTunes Lookup API re-pull, 2026-08-28: PeptidePal (Blank Labs LLC, App
Store id 6762102880) — 4,311 ratings / 4.69★ as of 2026-08-28, released
2026-04-23. Free to download; ten in-app-purchase price line items live on the
listing (monthly $8.99/$9.99/$12.99/$14.99, yearly
$29.99/$39.99/$44.99/$59.99/$79.99), no free trial on any tier. Library size is
disputed between PeptidePal's own properties — its App Store listing states
"50+ peptides," its site peptidepal.health states "20+ compounds" — both live
as of 2026-08-28; we report the conflict rather than pick the flattering
number. A separate app also named "PeptidePal" (App Store id 6746348113) is a
different product from a different developer — not this one.
7 Our app-store review analysis — Apple's
public App Store review feed, pulled 2026-08-27: a PeptidePal reviewer quotes
the app's own in-app assistant admitting the vial estimate "doesn't always
update automatically after logging a dose" (1★, 2026-07-26).
8 Direct Apple iTunes Lookup API pull, 2026-09-01: "PepCalc: Peptide
Calculator" (Awesome Labs LLC, App Store id 1524577846) — 949 ratings / 4.79★,
released 2020-07-22, current version 57.1 (2026-08-06), $9.99. Its own listing
describes a reconstitution/dose calculator, unit conversion, named saved
protocols, multi-compound blend math, and protocol sharing with other PepCalc
users via link or QR code — no scheduling, reminders, or vial-inventory tracking
described anywhere on the listing. Its own copy: "Private by design: No signup
required. No ads. Your data remains on your device." Not to be confused with
PepCalc Pro (Matthew Fishman, App Store id 6757834926) — a different app
from a different developer, released 2026-01-26, $2.99, 1 rating as of
2026-09-01.
9 Direct Apple iTunes Lookup API pull, 2026-09-01: "Peptide Tracker
Calculator" (Wild Monkey Labs, LLC, App Store id 6739737107) — the app behind
peptidecalc.io, its own listed seller URL — 227 ratings / 4.90★, released
2024-12-23, current version 2.7.7 (2026-05-11), $4.99. Its own listing describes
schedules with titration and cycling windows, dose logging, vial/pen/pill
inventory with "runout estimates and low-stock alerts," automatic local backups,
export to JSON/CSV/PDF, and optional Apple Health import and iCloud sync — its
own wording: "Personal tracking data stays on device unless you enable iCloud
sync." It also ships dose-vs-biometric trend overlays and half-life charts,
which VialMath deliberately does not (see "Where they honestly beat us").
10 Direct Apple iTunes Lookup API pull, 2026-09-01: "PEP Social —
Peptide Community" (PEP Social, LLC, App Store id 6784893142) — a dedicated
community/social app for this category, free, 11 ratings, released 2026-07-18.
Its own description: people "share what they're actually running — real
experiences, honest ratings" and "browse first-hand logs from people running
real protocols." Named here only to answer the question honestly, not as an
endorsement.
11 VialMath's product contract — Article
10 ("VialMath does not recommend treatment") and the Anti-Roadmap, which
permanently excludes AI protocol recommendations and a compound dosing
database. Adding to that list takes a board decision; removing from it takes
counsel — it isn't a feature gap waiting to be revisited.
First, the honest one: you may not need to pay anything
Most of the trackers above are paid, one way or another — a subscription, or a one-time price like PepCalc's $9.99 or PeptideCalc.io's $4.998,9. VialMath isn't only in that column anymore. There's a real free tier below it, and a free reconstitution calculator below that — at least ten occupy these exact searches, including one run by Rite Aid, a national pharmacy chain. Here's the actual ladder, including the rung where you should stop.
- Rung one: you need one dose worked out, once. Use a free calculator — ours, or anyone's genuinely free one. Vial size, water, target dose, out come your units. It costs nothing, needs no signup, and does that one job correctly. Our free calculator is exactly this and nothing more — if that's the whole of your problem, take it and go. (PepCalc and PeptideCalc.io are cheap, well-reviewed one-time calculators too, $9.99 and $4.998,9 — worth it if you'd rather own a dedicated app than use a web page, but they cost money and a free calculator does the identical math.)
- Rung two: you have a few things and want them remembered. This is what VialMath Free is for, and it is genuinely free — no card, no account, no trial clock. Two tracked compounds, blends, their schedules for each, a Today view, your full history, vial tracking, a run-out date, and backup/export any time. If that covers what you run, stop here. We mean that.
- Rung three: Free's limit is the thing you're actually hitting. More than two compounds at once, a cycle window, several doses a day, more than one vial to manage. That's the actual difference, and it's the only one worth $39 — unlimited items, cycle windows, vial inventory and a multi-vial reorder plan — $39 once, no recurring fee.
- So the honest test is which rung you're actually on. Free tracks two compounds, blends included, with the whole calculator and the full run-out and reorder maths. If that is what you run, stop there. Power is for the point where you are managing several at once.
Where they honestly beat us
A comparison that only ever favors the author isn't trustworthy. These are real, sourced advantages the competitors above have — not softened, not buried.
- They're native App Store / Play Store apps. We're not. Every competitor in this table ships a native iOS and/or Android app with store discovery, push notifications, and offline install. VialMath is a web app (installable as a PWA) — no App Store listing, no app-store search traffic.
- Regimen models half-life curves. We deliberately don't. Regimen's PK visualizer shows peak/trough/steady-state modeling for 150+ named compounds. VialMath ships zero compound content by design — that's a legal boundary we hold on purpose, not a feature we haven't gotten to, but it means we don't offer this.
- Shotsy has an established track record. We don't, yet. Shotsy has raised $2.25M and carries over 30,000 App Store ratings at 4.84★. VialMath is a brand-new product with no reviews and no track record — that's simply true, and worth saying plainly rather than implying otherwise.
- PeptIQ and Regimen ship a compound database. We never will. Real users use and reference that content. VialMath's zero-content posture is a deliberate legal line, not an oversight — but if a built-in compound reference is what you want, those apps offer something we don't.
- PeptidePal ships a compound library, curated multi-compound stacks, and an AI chat advisor. We ship none of those. Its own store listing and site describe a peptide library, pre-built stack presets for people running more than one compound, and an in-app AI assistant users can ask questions. VialMath's zero-content, zero-advice posture is the same deliberate boundary noted above, held on purpose rather than a feature gap — but if a compound reference, ready-made stacks, or an AI advisor is what you want, PeptidePal offers all three and we don't.6
There's another way to say the same thing, and it's the one we'd rather lead with: zero-compound database; Free tracks up to 2 tracked compounds, and Power removes that limit. A library needs someone to keep adding compounds as new ones show up — that's ongoing content work, and it's exactly the work our legal boundary rules out. A blank field needs no update. Whatever you type is already supported, and always will be — which makes the limitation more extensible than the thing it gave up, not less.
The one-line version
They interpret. We calculate.
A tracker that reads your logged weight against a dose, or tells you what to run next, is making a judgment call about a substance. VialMath never does — every number on every screen traces back to something you typed, and stops there.11 That's not modesty; it's the line that lets this product be sold at all. It also means VialMath is a bad fit for some people, so here's exactly who, stated plainly rather than left for you to discover after paying.
Don't buy VialMath if…
- You want an AI, or anyone, to recommend a protocol or a compound. PeptIQ's "Stack Optimizer" and PeptidePal's in-app AI advisor both do that.1,6 VialMath never will — not a limited version, not later.11
- You want a compound encyclopedia or a dosing library. PeptIQ (100+ profiles), Regimen (200+ compounds), and PeptidePal all ship one.1,6 We will never ship one — see above.
- You only need one calculation. Use a free calculator — ours or anyone's genuinely free one — or a cheap one-time app like PepCalc ($9.99) or PeptideCalc.io ($4.99) if you'd rather own it outright.8,9 Paying $39 for arithmetic you'll do once is a bad trade, and we'd rather tell you than take the money.
- You want community or social features. A feed, other users' protocols, shared ratings. Dedicated apps for exactly that exist.10 We don't have any of it and won't — what you enter stays on your device, never aggregated, never shown to anyone else.
Buy VialMath if…
- You already know what you're entering — the numbers are the problem, not the advice.
- Your schedule changes over time — a dose that steps, a phase that ends, a cycle that returns.
- You track more than two things at once.
- You care when your inventory actually runs out, not just that it eventually will.
- You want to see every calculation, not just trust a result.
- You don't want your protocol sitting in someone else's cloud.
- You want a permanent record of what changed, and when.
If the wedge fits
One-time price. No subscription, ever.
Free tools