Cycling through all six. Tap any point to stop.

Measured on six things

Peptide reconstitution calculator and injection tracker for research use.

Growth

A real, specific problem (reconstitution math, protocol tracking) with a clear wedge: free calculators plus an educational publisher that doesn't sell peptides. 280+ accounts and 35 countries is early context, not the score.

Screenshots

1 / 5

Peptide Lab: Dosage Calculator

About this app

Peptide Lab is a free-to-start reconstitution calculator and injection tracker for peptide research, on web and Android. Enter vial strength, bacteriostatic water and the target amount to get the volume to draw and the units on an insulin syringe. Log each administration on a 14-site body map, track vials and expiry, and set reminders. Available in 12 languages. For research and educational use only; no medical advice.

Key features

1Reconstitution calculator: enter vial mg, water, and target dose to get exact syringe units.
214-site body map for injection rotation tracking with vial expiry and dose-count tracking.
3Cycle tracking with weight, effects, journal, side effects, and progress photos.
425 peptide sheets as short lessons plus a 10-chapter reconstitution course.
5Free tier covers calculators, body map, reminders, and unlimited logged injections.

Target customer profile

Drawn from the product itself, not from a survey.

Scout Review

Written by AI from measured evidence, scored out of 100.

Peptide Lab is a surprisingly polished indie tool for a niche that usually gets spreadsheet-grade software. The reconstitution calculator, 14-site body map, and cycle tracking are exactly the features a peptide researcher needs, and the free tier covers most of them. Design is above average — the type system and CTA discipline are better than most SaaS landing pages — though the body-map illustration and stretched Free card betray the template underneath. Speed is excellent on desktop and mediocre on mobile (5.2s LCP). Security headers are strong (11/12) but there's no audit trail. Accessibility is 93/100 with two real fails. Growth potential is real but unproven: a clear wedge, a specific customer, and a domain younger than a year.

Measure by measure

Usability

Clear CTA hierarchy, five-tab nav with labels, and a pricing table showing monthly/yearly/lifetime with per-week math and a 30-day guarantee. The '30 seconds' line is repeated four times, and the guide is an encyclopedia, not app help.

Design

Judging the app UI from store mockups and the live site: a disciplined serif/sans pairing, consistent green CTA, and a coherent five-tab dark UI. The template-grade body-map silhouette and a stretched Free pricing card are the weak spots.

Speed

Desktop Lighthouse is a clean 100/100, but mobile lands at 76 with a 5.2s LCP — double the 2.5s 'good' threshold. CLS 0 and TBT 166ms are fine; the mobile hero image is the bottleneck.

Security

Strong header hygiene — HTTPS, HSTS, CSP, frame protection, Referrer-Policy, SPF and DMARC all present (11/12). Permissions-Policy is the one gap. No SOC 2, ISO, or bug bounty evidence found, so it stays in the upper-middle band.

Accessibility

Lighthouse a11y 93/100 with 12-language coverage is solid. Two real fails: aria-hidden elements containing focusable descendants (a keyboard trap risk) and insufficient color contrast. No WCAG statement published.

Growth

Improvement areas

Mobile LCP of 5.2s is double the 'good' threshold — optimize the hero image payload.
No app help documentation; the 'Guide' link leads to a peptide encyclopedia instead.
Two Lighthouse accessibility fails (aria-hidden focusable descendants, contrast) with no WCAG statement.
No security audit, bug bounty, or security page to substantiate the 'your data stays yours' claim.

Design & Usability

The landing page is genuinely well-crafted — a two-voice type system (condensed serif + clean sans) with a single green CTA that recurs at every scroll depth, and a dark phone mockup showing the actual body-map UI above the fold. The app's five-tab navigation is coherent and labeled. Usability is strong on the marketing side: pricing shows monthly, yearly, and lifetime with per-week equivalents and a 30-day guarantee, and the free/paid boundary is legible via FREE badges and a separate Pro callout. The cracks: the body-map silhouette looks template-grade next to the rest of the polish, the Free pricing card stretches awkwardly to match Pro, and the 'ready in 30 seconds' line is repeated four times. The 'Guide' link leads to a 57-peptide encyclopedia rather than app help documentation, which is a real onboarding gap.

Speed & Security

Speed is a tale of two devices: desktop Lighthouse is a perfect 100/100, but mobile lands at 76 with a 5.2s LCP — more than double Google's 2.5s 'good' threshold. CLS is 0 and TBT is a healthy 166ms, so the bottleneck is the mobile hero payload, not JavaScript. Security is above average for an indie tool: HTTPS enforced, HSTS, CSP, frame protection, X-Content-Type-Options, Referrer-Policy, SPF and DMARC all present — 11 of 12 checklist points, with only Permissions-Policy missing. The site claims encrypted-in-transit data and one-tap permanent deletion, but there's no SOC 2, ISO certification, penetration test, or bug bounty program in the collected evidence, so the score stays in the upper-middle band rather than reaching 'excellent'.

Accessibility & Growth

Accessibility scores 93/100 on Lighthouse with 12-language coverage (EN, FR, DE, ES, PT, AR, IT, PL, KO, JA, ZH, RU) — genuinely strong for an indie app. Two real failures remain: aria-hidden elements containing focusable descendants (a keyboard-trap risk) and insufficient color contrast. No WCAG conformance statement is published. On growth: the product names a specific, real problem — reconstitution math and protocol tracking — and its wedge is clear. It's built by an educational publisher that explicitly does not sell peptides, which differentiates it from vendor-owned trackers. The free tier is generous (calculators, 14-site body map, reminders, 25 peptide sheets), and Pro at $9.90/mo or $99 lifetime undercuts the '$40-50/year' competitors the site names. The honest limit: 280+ accounts and a 0.7-year-old domain mean this is a hypothesis, not a proven market. The category has headroom, but the wedge depends on trust in an unregulated space.

Conclusion

If you're running peptide protocols and doing the math on sticky notes, this is a genuinely useful upgrade — the calculator alone justifies the free tier, and $99 lifetime is a fair ask for the Pro features. The caveats are honest ones: mobile load time needs work, the help docs are an encyclopedia rather than a guide, and there's no security certification to point at. None of those are dealbreakers for a personal tracking tool. The bigger question is whether a 0.7-year-old product from an educational publisher can build enough trust to grow in a category where 'research use only' is doing a lot of legal work. Worth a try; worth watching.

Suggestions for improvement

Fix the mobile LCP — 5.2s is double the 'good' threshold; compress or lazy-load the hero image.
Publish a real app help center separate from the peptide encyclopedia, covering each tab and the half-life curve feature.
Add an accessibility statement and fix the two Lighthouse fails: aria-hidden focusable descendants and contrast.
Add a security page with data-handling details and, eventually, a third-party audit or bug bounty to back the 'your data stays yours' claim.

How we score

Alternatives comparison

Named competitors, point by point. Nobody paid to appear here or to be left out.

	Peptide Lab: Dosage Calculator
Reconstitution / dosage calculator	Yes — core feature, free tier	Not specified in provided details	Not specified in provided details
Injection site tracking (body map)	Yes — 14-site body map, free tier	Not specified in provided details	Not specified in provided details
Free tier available	Yes — calculators, tracking, reminders, 1 active peptide	Not specified in provided details	Not specified in provided details
Pricing model	Free; Pro $9.90/mo, $39.90/yr, $99 lifetime	Not specified in provided details	Not specified in provided details
Multi-language support	12 languages	Not specified in provided details	Not specified in provided details
Platforms	Web + Android (iOS coming soon)	Not specified in provided details	Not specified in provided details