Comparison

Milligram vs Stacksy

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. Reconstitution Calculator: Mix any vial, any concentration. Convert mg, mcg, IU, and units for compound preparation. Designed for accurately mixing peptide vials with bacteriostatic water - saved to your compounds for quick reference. Milligram Intelligence: An assistant that already has your stack, your doses, your bloodwork and your Apple Health data loaded. Ask "what do I draw for 5mg from a 10mg vial in 2ml", "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

Stacksy

Organize and track your personal peptide protocol with this private application. Manage your entire routine, including what peptides to take and when. Offers monthly and yearly subscription plans for full access.

Highlights
  • Organize peptide protocols
  • Track peptide dosages
  • Schedule peptide intake
  • Private routine management
  • GLP-1 tracking
Features
Read full description

Stacksy is a simple, private way to organize and track your personal peptide protocol. Your whole routine in one place: what you're taking and when to take it. Stacksy requires a Premium auto-renewable subscription to use the app: - Stacksy Premium (Monthly): $9.99 / month - Stacksy Premium (Yearly): $39.99 / year Payment is charged to your Apple ID at purchase confirmation. Your subscription auto-renews unless cancelled at least 24 hours before the period ends. Manage or cancel anytime in your App Store account settings. Privacy Policy: https://stacksy.netlify.app/privacy Terms of Use (EULA): https://stacksy.netlify.app/terms

Screenshots

Milligram4 screens
Stacksy4 screens

Verdict

The call

The clearest difference is monetization model: Milligram at free with in-app purchases against Stacksy's subscription. Milligram also leads on ratings volume (298 vs 16). Stacksy's advantage is review sentiment (100% vs 71%) and rating (5.0 vs 4.7). 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 Stacksy sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Stacksy holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Milligram has 298 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 71% of Milligram's written reviews are positive against 100% of Stacksy's.

UpkeepUpdate frequency

Milligram ships an update every 4 days, Stacksy every 2 days. The most recent releases landed on September 30, 2026 and September 18, 2026 respectively.

Scorecard5 real differences · 5 level
Milligram versus Stacksy: the parameters behind the verdict, then further details
ParameterMilligramStacksy
PriceFreeFree
Rating4.7 (298 ratings)5.0 (16 ratings) — better
Positive reviews71.4% of reviews100.0% of reviews — better
Number of ratings298 — better16
Update frequencyEvery 4 daysEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, Apple WatchiPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size164 MB65 MB
Age rating12+17+
DeveloperEnzo AndersonVelor4 LLC

Customer experience

Milligram

All ratings298 ratings
Positive90.9%
Neutral4.4%
Negative4.7%
Written reviews49 reviews
Positive71.4%
Neutral2.0%
Negative26.5%

Stacksy

All ratings16 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 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
2 purchases

Stacksy

Subscriptions2
  • Stacksy Pro (Monthly)$9.991 Month
  • Stacksy Pro (Yearly)3 Days trial$39.991 Year

Questions

Is Milligram free?
Milligram is free to download, with in-app purchases available.
Is Stacksy free?
Stacksy is free to download, with in-app purchases available.
Which has better reviews, Milligram or Stacksy?
Stacksy is rated higher. Milligram averages 4.7 out of 5 from 298 ratings, while Stacksy averages 5.0 from 16 ratings.
Do Milligram or Stacksy have ads?
Neither Milligram nor Stacksy shows ads.
Which is updated more often, Milligram or Stacksy?
Milligram ships an update every 4 days, and Stacksy every 2 days. Most recently, Milligram was updated on September 30, 2026 and Stacksy on September 18, 2026.

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