Comparison

Milligram vs OnePin

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

Head to head
About

Milligram

Optimize your health and performance with science-backed data. Track peptide levels, analyze bloodwork, and monitor progress with intelligent insights. Get personalized feedback on your protocol and health metrics.

Highlights
  • Intelligent protocol analysis
  • Compound level tracking
  • Bloodwork analysis and biomarker flagging
  • Comprehensive compound library
  • Progress scans for body composition
  • Stack analytics and interaction flagging
  • Journaling for health metrics
  • Reconstitution calculator
Features
Read full description

Whether you're optimizing for fat loss, muscle gain, longevity, recovery or anti aging, Milligram is for people who want to take back control of their health protocols with science-backed confidence. Every other tracker gives you a tidier place to write down what you already did. Milligram models what is actually in your system right now. Every dose charted against every half-life. Everything in the stack with info and the database covering over 3,581 references total. Bloodwork read against what you are actually running. And an AI assistant that answers from your real-time numbers, read against a database made specifically for your protocol, not everyday questions. FEATURES Your Protocol: Everything you run, on one screen. Each compound with its own schedule, dose, vial and supply tracked, and the whole protocol read as one picture rather than being scattered across different notes, files and spreadsheets. Dose tracking: Log every dose, whether that's an injectable or an oral supplement - Milligram works with every compound and every dosing route. Reminders arrive on the protocol's schedule and know which compound, which dose and which injection site. Milligram Intelligence: An assistant that already has your stack, your doses, your bloodwork and your Apple Health data loaded. Ask "which doses did I miss this month", "how is my weight tracking against my retatrutide cycle", or "did my IGF-1 move on tesamorelin", and get an answer from your own numbers. Level Buildup: See your compound levels build from each trough to peak. Every dose is charted against the published half-life of your compound, so you know exactly when you've reached the right zone at the right titration, how each dose is keeping you there, and how much a missed dose can actually move the needle. Bloodwork: Upload a PDF or a photo of your labs. Every biomarker is extracted and out-of-range values flagged, then kept where they can be read against the compounds that might be moving them. Compound Library: 202 compounds with mechanisms, dose ranges, half-lives, expected timelines and side-effect profiles, each referenced to clinical sources. Retatrutide, tirzepatide and semaglutide. Testosterone esters, Masteron, Anavar. Tesamorelin, BPC-157, GHK-Cu, MK-677, Ipamorelin and CJC-1295. Creatine, Omega-3 Fish Oil, Magnesium, Zinc, Vitamin D3, and more. AI calorie and nutrition tracking: Scan any meal with your camera. Snap a photo, scan a barcode, or scan a nutrition label and Milligram extracts calories, protein, carbs and fat instantly. Track every meal against your daily targets with a clean macro breakdown. Apple Health: Two-way sync for sleep, HRV, vitals, activity, weight and body composition, so protocol data and health data sit in the same timeline. SUBSCRIPTION AND TERMS Milligram Pro is accessible via an auto-renewing subscription. You may switch off auto-renew in your Apple ID Account Settings. Purchases of subscriptions will be charged using your Apple ID upon confirmation of purchase. Subscriptions renew on a monthly or yearly basis, unless canceled at least 24 hours before the end of the current period. If canceled, subscriptions remain valid until the end of the current period, and any unused portions are not valid for a refund. By signing in with Apple or by purchasing a subscription, you affirm your understanding of the following: Terms of Service: https://milligram.health/terms Privacy Policy: https://milligram.health/privacy Milligram is not a medical device and is not intended to diagnose, treat, cure, monitor, or prevent medical conditions or illnesses. Always consult your physician first. All information provided is for general informational purposes only.

About

OnePin

This app helps users meticulously track complex peptide and supplement protocols. It offers smart syringe grouping, phase-aware dose calculations, vial life management, and inventory tracking. Features include a body map injection site tracker and protocol templates for research peptide users and biohackers.

Highlights
  • Complex protocol tracking
  • Smart syringe grouping
  • Phase-aware dose calculations
  • Vial life and supply forecasting
  • Inventory management
  • Body map injection site tracker
  • Protocol templates
Features
Read full description

OnePin is the protocol tracker built for people who actually run peptides and supplements - not a glorified pill reminder. WHAT IT DOES - Track every peptide, supplement, and dose across complex multi-phase protocols - Smart syringe grouping with built-in compatibility checks (avoid lists, safe lists, contamination warnings) - Phase-aware dose calculations that handle taper, escalation, and break cycles automatically - Vial life math, doses-per-vial, supply forecasting per cycle - Day-by-day calendar with cycle countdowns and rest-day awareness - Inventory tracking with batch dates, costs, vial-tracking, and phase-aware capacity projections - Body map injection site tracker with heat-map awareness so you rotate sites - Protocol templates for popular compounds, with editable starting points - Compliance dashboard, dose history, and dose-log audit trail - Compound database covering peptides, supplements, blends, and bioregulators - Household sharing - track for yourself plus a partner from one app CYCLE TYPES SUPPORTED - Indefinite (daily / EOD / weekly / specific days) - Yearly Schedule (auto-spaced cycles per year, e.g. 3x/yr bioregulators) - Fixed Count (run N cycles then stop, with end-date preview) - Custom phases with per-slot dose escalation INTERACTION SAFETY - 200+ compound database with curated avoid / safe pair data - Real-time syringe planner that flags REACTIVE compounds (GHK-Cu, glutathione, SS-31, LL-37, etc.) and isolates them per chemistry safety rules - Same-day dosing interaction warnings across routes - Bioregulator-specific grouping logic WHO IT'S FOR If you're running anything more complex than "1 peptide, daily, forever", you've felt the pain of spreadsheet-tracking peptide protocols. OnePin replaces that spreadsheet. Designed for: research peptide users, supplement biohackers, protocol designers, household partners managing each other's protocols, anyone running multi-phase or cycle-based regimens. NOT INTENDED FOR OnePin is a tracking and education tool. It does not provide medical advice. Compounds tracked are sourced as research chemicals or supplements; verify dosing with a physician before use. The app does not validate the safety or legality of any compound or protocol you enter. PRIVACY Your data stays yours. Local-first storage with optional cloud sync via your account. We don't sell or share your data. SUBSCRIPTION OnePin Premium is an auto-renewing subscription. - Length: 1 year (annual) - Free trial: 30 days free, then $49.99/year - Payment is charged to your Apple Account at confirmation of purchase, after the 30-day free trial ends. - The subscription automatically renews unless canceled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the period ends. - Manage or cancel anytime in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Milligram4 screens
OnePin4 screens

Verdict

The call

The clearest difference is review sentiment: OnePin at 100% against Milligram's 58%. OnePin also leads on rating (5.0 vs 4.7) and iOS requirement (15.0 vs 17.0). Milligram's advantage is ratings volume (541 vs 7). On price, update cadence, ads and in-app purchases 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

Both are free to download. Milligram sells 3 in-app purchases, starting at $17.49 per month and OnePin sells 1 in-app purchase, starting at $49.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

OnePin holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Milligram has 541 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 58% of Milligram's written reviews are positive against 100% of OnePin's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
Milligram versus OnePin: the parameters behind the verdict, then further details
ParameterMilligramOnePin
PriceFreeFree
Rating4.7 (541 ratings)5.0 (7 ratings) — better
Positive reviews58.5% of reviews100.0% of reviews — better
Number of ratings541 — better7
Update frequencyEvery 5 daysEvery 5 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size171 MB83 MB
Age rating12+17+
DeveloperMilligram Health Pty LtdJames Lee

Customer experience

Milligram

All ratings419 ratings
Positive92.4%
Neutral3.3%
Negative4.3%
Written reviews65 reviews
Positive58.5%
Neutral1.5%
Negative40.0%

OnePin

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Milligram

Subscriptions3
  • Milligram Pro2 variants$17.491 Month
  • Milligram Pro3 Days trial$49.991 Year
  • Milligram Pro3 Days trial$69.991 Year
1 purchases

OnePin

Subscriptions1
  • OnePin Premium (Annual)1 Month trial$49.991 Year

Questions

Is Milligram free?
Milligram is free to download, with in-app purchases available.
Is OnePin free?
OnePin is free to download, with in-app purchases available.
Which has better reviews, Milligram or OnePin?
OnePin is rated higher. Milligram averages 4.7 out of 5 from 541 ratings, while OnePin averages 5.0 from 7 ratings.
Do Milligram or OnePin have ads?
Neither Milligram nor OnePin shows ads.
Which is updated more often, Milligram or OnePin?
Milligram ships an update every 5 days, and OnePin every 5 days. Most recently, Milligram was updated on November 5, 2026 and OnePin on October 31, 2026.

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