Comparison

myStack vs PeptidePal

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

Head to head
About

myStack

This app uses AI to analyze clinical studies and create personalized supplement recommendations based on your health goals, diet, and medications. It provides evidence-based advice, dosage suggestions, and summaries of scientific research, developed by experts.

Highlights
  • Personalized supplement stacks
  • AI-driven recommendations
  • Analysis of 10,000+ clinical studies
  • Medication interaction screening
  • Evidence-based supplement advice
  • Quality-vetted supplement curation
Features
Read full description

Supplement stacks built on evidence, not hope. myStack is a health intelligence app founded by a pharmacist with a PhD in nutrition. It reads 10,000+ human clinical studies so your choices don't come from influencer hype, retailer upsells, or generic lists. ONE GOAL IN. ONE TRUSTED STACK OUT. 1. Tell us — your goal in plain words, plus what you already take and your diet. 2. We read — every study behind a recommendation, summarized so you understand it in minutes, not hours. 3. You own it — saved, shareable with family and your provider, adjustable anytime, and auto-rechecked as your profile changes. FOUR CHECKS ON EVERY SUPPLEMENT • Interactions — screened against everything else you take before it's recommended. • Dose — the amounts that actually worked in studies, not the label's serving size. • Study strength — how solid the research is: size, design, and rigor, rated. • Fit for you — how well it matches your goal, profile, and diet. Not just what's popular. Nothing joins your stack without a verdict on all four. ONE PLACE TO EXPLORE, EVALUATE, AND BUY • Conditions — which supplements the evidence supports. • Supplements — how each one works, side effects, and research. • Research — the studies themselves: methods, results, and who funded them. • Market — third-party-tested products. Never sponsored. WHY myStack IS DIFFERENT • No ads. No sponsored products. Ever. • Your data stays private — never sold. • Caveats shown, not hidden — every study's limitations in plain language. Your first two stacks are free. For less than a bottle of the wrong supplement, Membership unlocks unlimited stacks — free for the first 14 days. myStack is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting supplements or changing your health routine.

About

PeptidePal

This app helps users track GLP-1 medications, research peptides, and TRT. It offers a protocol builder, a comprehensive peptide library, and a reconstitution calculator with visual aids. It also includes supply alerts and injection site rotation guidance.

Highlights
  • GLP-1 shot tracking
  • Research peptide tracking
  • TRT tracking
  • Protocol builder
  • Reconstitution calculator
  • Vial inventory & supply alerts
  • Injection site rotation
Features
Read full description

PeptidePal is a peptide and GLP-1 protocol tracker used by over 150,000 people — dose logging, vial inventory, injection site rotation, reconstitution math, scheduling, and a 110+ compound library in one app. Whether you're on a prescribed GLP-1, running your first protocol, or managing several compounds on different schedules, PeptidePal keeps it all in one place. WHY PEPTIDEPAL? ◉ BUILT FOR PROTOCOLS, NOT PILLS: Generic medication apps track one pill, once a day. PeptidePal handles mcg, mg, IU and mL, cycles, on/off weeks, site rotation, and vial lifecycle. ◉ NO DRIFT: Three weeks in, it's easy to lose track of whether you're on day 9 or day 12. PeptidePal keeps the protocol you designed and the protocol you're running the same thing. MAIN FEATURES: ▶ PROTOCOL BUILDER Build from the library or from scratch. Set dose (mcg, mg, IU, mL), frequency (daily, every other day, twice weekly, 5-on/2-off, custom), days, start date, notes, and reminders. Run multiple protocols side by side. ▶ DOSE LOGGING & CALENDAR One tap to log. A week strip and monthly calendar show completed and planned doses, injection site, and time. Streaks keep you consistent. ▶ VIAL INVENTORY & SUPPLY ALERTS Log fill size, concentration, and expiry. PeptidePal projects each vial's run-out date from your live schedule and warns you about a week ahead. ▶ RECONSTITUTION MATH Enter vial size, diluent volume, desired amount, and syringe size. PeptidePal does the mg/mL arithmetic and shows it on a syringe diagram, with an over-capacity warning. Unit conversion only — PeptidePal does not recommend a dose. ▶ INJECTION SITE ROTATION Tap-to-select on an interactive body map, with recently used sites heat-mapped so your rotation is visible at a glance. ▶ COMPOUND LIBRARY 50+ profiles in plain English: mechanism, half-life, research status, reported side effects, and considerations. Every entry states its regulatory status. ▶ PROGRESS & LEVELS Weight and body-composition charts, progress photos with compare and time-lapse, and an estimated on-board level curve from your logged doses. Educational estimate, not a measurement. ▶ AI ADVISOR & COMMUNITY Q&A Short, plain-English answers to educational questions, plus a moderated peer forum. The AI will not recommend a dose, titration, or protocol, and routes medical questions to a provider. You're talking to an AI, not a clinician. Does PeptidePal work with prescribed GLP-1s? Yes — track Ozempic®, Wegovy®, Mounjaro® or Zepbound® with the same scheduling, rotation, and supply tools. Dosing decisions belong with your prescriber. Is my data safe with PeptidePal? Protocol data is stored on your device Progress photos are stripped of metadata before storage Analytics are anonymous — no advertising identifier, no cross-app tracking We do not sell your data or share health information with advertisers Delete your account and all associated data from Settings, in two steps Medical disclaimer PeptidePal is a tracking and educational tool. It does not provide medical advice, diagnosis, or treatment, does not recommend doses or protocols, and is not a substitute for a licensed healthcare provider. Many compounds in the library are not approved by the FDA or other regulators for human use. Always consult a qualified clinician before starting, stopping, or changing anything. 18+ only. SUBSCRIPTION INFO: Free to download. Protocol tracking, the full library, advanced analytics, and AI chat require a subscription. Prices are shown in the app and charged to your Apple ID at confirmation of purchase. Renews automatically unless auto-renew is turned off at least 24 hours before the period ends. Manage or cancel anytime in App Store account settings. Terms: https://peptidepal.health/terms Privacy: https://peptidepal.health/privacy Trademarks are property of their respective owners. PeptidePal is not affiliated with or endorsed by any pharmaceutical manufacturer.

Screenshots

myStack4 screens
PeptidePal4 screens

Verdict

The call

The clearest difference is review sentiment: myStack at 100% against PeptidePal's 30%. myStack also leads on in-app purchases (none vs 20) and ads (none vs shown). PeptidePal's advantage is update cadence (every 5 days vs every 3 months) and ratings volume (4.9K vs 7). On price 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. PeptidePal sells 19 in-app purchases, starting at $3.99 per 7 days. myStack asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

myStack holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: PeptidePal has 4.9K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 100% of myStack's written reviews are positive against 30% of PeptidePal's.

UpkeepUpdate frequency

myStack ships an update every 3 months, PeptidePal every 5 days. The most recent releases landed on September 26, 2026 and October 23, 2026 respectively.

Scorecard10 real differences · 1 level
myStack versus PeptidePal: the parameters behind the verdict, then further details
ParametermyStackPeptidePal
PriceFreeFree
Rating5.0 (7 ratings) — better4.7 (4.9K ratings)
Positive reviews100.0% of reviews — better29.7% of reviews
Number of ratings74.9K — better
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank—#179 — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS14.1 — better18.0
Further details — not scored
Size2 MB105 MB
Age rating17+12+
DeveloperBalam LLCBlank Labs LLC

Customer experience

myStack

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

PeptidePal

All ratings4,707 ratings
Positive91.7%
Neutral4.3%
Negative4.0%
Written reviews148 reviews
Positive29.7%
Neutral7.4%
Negative62.8%

In-app purchases

None

myStack

No in-app purchases

19 purchases

PeptidePal

Subscriptions19
  • PeptidePal – Weekly$3.997 Days
  • PeptidePal – Weekly$4.997 Days
  • PeptidePal – Monthly2 variants$8.991 Month
Show 16 more
  • PeptidePal – Monthly$9.991 Month
  • PeptidePal – Monthly$11.991 Month
  • PeptidePal – Monthly$12.991 Month
  • PeptidePal – Monthly$14.991 Month
  • PeptidePal – Yearly$19.991 Year
  • PeptidePal – Monthly$19.991 Month
  • PeptidePal – Quarterly$29.993 Months
  • PeptidePal – Yearly$29.991 Year
  • PeptidePal – Yearly$35.991 Year
  • PeptidePal – Yearly3 Days trial$35.991 Year
  • PeptidePal – Quarterly$39.993 Months
  • PeptidePal – Yearly3 Days trial$39.991 Year
  • PeptidePal – Yearly$39.991 Year
  • PeptidePal – Yearly$44.991 Year
  • PeptidePal – Yearly$59.991 Year
  • PeptidePal – Yearly$79.991 Year

Questions

Is myStack free?
myStack is free to download, with no in-app purchases.
Is PeptidePal free?
PeptidePal is free to download, with in-app purchases available.
Which has better reviews, myStack or PeptidePal?
myStack is rated higher. myStack averages 5.0 out of 5 from 7 ratings, while PeptidePal averages 4.7 from 4.9K ratings.
Do myStack or PeptidePal have ads?
PeptidePal shows ads; myStack does not.
Which is updated more often, myStack or PeptidePal?
myStack ships an update every 3 months, and PeptidePal every 5 days. Most recently, myStack was updated on September 26, 2026 and PeptidePal on October 23, 2026.

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