Comparison

PepCalc Pro vs PeptideOS+

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PepCalc Pro

This app offers precise calculations for research protocols, managing inventory, and scheduling tasks. It provides a verifiable audit trail with transparent math and is designed for offline use with a focus on user privacy. Export your records in various formats for external documentation.

Highlights
  • Precision concentration calculations
  • Visual protocol calendar and scheduling
  • Seamless inventory management
  • Verifiable records with audit trail
  • Offline-first data privacy
  • Professional CSV/PDF exporting
Features
Read full description

PepCalc Pro is a professional-grade concentration and measurement tracker built for clarity, precision, and privacy. Designed for meticulous research management, it combines deterministic calculations with a complete lifecycle system—all in a 100% offline-first environment. Manage your protocols with ease using the new visual calendar, bridge calculations directly to your inventory, and maintain a verifiable audit trail with "Show Math" transparency. No ads, no accounts, and no subscriptions. CORE FEATURES Precision Calculations - Calculate concentration and required volume with deterministic accuracy. - Visual unit gauge provides a quick "sanity check" for your measurements. - "Show Math" toggle: View exact formulas and intermediate values for total verification. New: Protocol Calendar & Scheduling - Dedicated visual roadmap for your schedules with custom color-coding. - Create recurring schedules linked to specific calculation snapshots. - On-device reminders ensure you stay on track with your protocol. Seamless Inventory Management - Track vials, remaining amounts, and expiration dates. - Instant Inventory Bridge: Create a matching inventory vial directly from a saved preparation. - Automatic decrement: Log a dose and your inventory updates instantly. - Low-stock and expiration alerts. Verifiable Records (History) - Record completed or skipped entries with timestamps and notes. - Ledger-style history: Every record is tied to an immutable "snapshot" of the math used at that time. - Simple, high-level summaries for recent activity and compliance. Designed for Trust & Privacy - Offline-first: Your data never leaves your device. - One-time purchase: All features included with no subscriptions or hidden fees. - Security: Optional App Lock via Face ID, Touch ID, or PIN. Professional Exporting - Export records as CSV or PDF with custom date-range filtering. - Perfect for external logs, lab notebooks, or personal record-keeping. IMPORTANT NOTICE PepCalc Pro is intended for informational and organizational purposes only. It does not provide medical advice, diagnosis, treatment, or prescriptions. All inputs, outputs, and decisions are the responsibility of the user. Verify all calculations independently.

About

PeptideOS+

Read full description

PeptideOS+ is the privacy-first app for tracking peptide protocols. No account. No email. Everything stays on your device or syncs under an anonymous handle. Designed for peptide researchers, biohackers, and health optimizers who value discretion. FEATURES YOUR DATA STAYS YOURS No name. No email. No phone number. Your identity is a randomly generated handle. Progress photos never leave your device. Sign in with Apple uses Hide My Email by default. We built PeptideOS+ so you don't have to choose between tracking your protocols and protecting your privacy. TRACK EVERY PROTOCOL Log doses, track injection site rotation, set reminders, and monitor compliance — all synced to your real schedule. Whether you're running one peptide or a full stack, your protocol tab keeps everything organized. 80+ PEPTIDE DATABASE Clinical protocols, typical dose ranges, half-lives, stacking notes, side-effect profiles, and research summaries for over 80 peptides. Browse by category (healing, weight management, cognitive, longevity, and more) or search by name, goal, or symptom. Updated continuously. RECONSTITUTION CALCULATOR Enter your vial size, BAC water volume, and desired dose — get the exact syringe units instantly. Visual syringe diagram shows exactly where to draw. No more mental math. ANONYMOUS COMMUNITY Real users sharing real protocols and real results. No names, no DMs, no drama. Ask questions, share progress updates, review vendors, and browse protocol shares — all under a randomly assigned handle. Community content is screened for safety before publication. AI ASSISTANT Ask questions about peptides, protocols, interactions, and reconstitution. Powered by Claude, tuned to the peptide domain. Every response includes a medical disclaimer — we're an information assistant, not a doctor. PROGRESS TRACKING Wellness score combining compliance, sleep quality, and subjective wellbeing. Daily check-ins, streak tracking, and trend visualization help you see what's working over time. PEPTIDEOS+ PRO Free tier includes the full database, calculator, 1 protocol, and 3 AI queries/day. Pro ($9.99/mo or $69.99/yr) unlocks unlimited protocols, unlimited AI, lab result tracking, community posting, progress photos, and data export. Privacy policy: https://flaritos.github.io/PeptideOS/privacy-policy.html Terms of use: https://flaritos.github.io/PeptideOS/terms.html Subscriptions auto-renew. Cancel anytime in your Apple ID settings. IMPORTANT PeptideOS+ is an information and tracking tool. It is not a substitute for medical advice, diagnosis, or treatment. Always consult your healthcare provider before starting any peptide protocol. The app does not sell, prescribe, or dispense peptides.

Screenshots

PepCalc Pro4 screens
PeptideOS+4 screens

Verdict

The call

The clearest difference is price: PeptideOS+ at Free against PepCalc Pro's $2.99. PeptideOS+ also leads on update cadence (every 4 days vs every 4 months). PepCalc Pro's advantage is in-app purchases (none vs 2) and device support (3 vs 1). On ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

PeptideOS+ is free to download; PepCalc Pro costs $2.99 up front. PeptideOS+ sells 2 in-app purchases, starting at $9.99 per month. PepCalc Pro asks for nothing beyond the download.

UpkeepUpdate frequency

PepCalc Pro ships an update every 4 months, PeptideOS+ every 4 days. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
PepCalc Pro versus PeptideOS+: the parameters behind the verdict, then further details
ParameterPepCalc ProPeptideOS+
Price$2.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size41 MB6 MB
Age rating17+12+
DeveloperMatthew FishmanZACHARY CANCIANO GOLD

In-app purchases

None

PepCalc Pro

No in-app purchases

2 purchases

PeptideOS+

Subscriptions2
  • Pro Monthly7 Days trial$9.991 Month
  • Pro Yearly7 Days trial$69.991 Year

Questions

Is PepCalc Pro free?
PepCalc Pro costs $2.99, with no in-app purchases.
Is PeptideOS+ free?
PeptideOS+ is free to download, with in-app purchases available.
Do PepCalc Pro or PeptideOS+ have ads?
Neither PepCalc Pro nor PeptideOS+ shows ads.
Which is updated more often, PepCalc Pro or PeptideOS+?
PepCalc Pro ships an update every 4 months, and PeptideOS+ every 4 days. Most recently, PepCalc Pro was updated on October 31, 2026 and PeptideOS+ on October 24, 2026.

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