Comparison

myStack vs Biostacks

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

Biostacks

Easily manage your supplement intake with barcode scanning, AI assistance, and detailed insights. Track routines, monitor nutrient coverage, and analyze your stack's effectiveness and cost. Prioritizes user privacy with offline functionality and optional iCloud sync.

Highlights
  • Barcode scanning for supplement library
  • AI-powered supplement routine analysis
  • Customizable daily and cycle schedules
  • StackScore for routine quality
  • Potential interaction warnings
  • RDA coverage and nutrient overlap analysis
  • Mood, energy, and sleep trend tracking
Features
Read full description

Biostacks helps you track, understand, and improve your supplement routine while keeping your data private. Build your supplement library by: • Scanning barcodes with your camera • Searching NIH DSLD and Open Food Facts data (well-known brands and popular supplements available offline) • Entering supplements, doses, and nutrients manually • Asking the built-in Apple Intelligence assistant (iPhone 15 Pro and newer) • Asking your own AI assistant with a ready-made copy-and-paste prompt Create routines and schedules that match how you take things: • Daily, specific weekdays, or on/off cycles (like 5 days on, 2 off) • Multiple times of day, from a morning multivitamin to an evening magnesium • Peptide support: vial size, reconstitution volume, and a draw-volume calculator Then get insights into your stack: • StackScore, a 0 to 100 quality score for your whole routine • Potential interactions based on public research, each with a source link • Warnings when a nutrient total goes over its safe upper limit • RDA coverage across your vitamins and minerals • Nutrient overlaps between products • Brand quality and trust signals • Adherence history and score trends over 30, 90, or 365 days, with CSV export • Monthly cost per supplement and per stack • Running-low refill alerts Log doses with one tap, mark a whole stack taken at once, and long-press to skip a dose without breaking your streak. Reminders keep you on schedule, and smart tuning suggests a better reminder time when you consistently log late. Progress rings and streaks show your consistency day by day. You can also log a dose by asking Siri. Your day, organized: • Doses grouped into taken, due, and upcoming • A calendar of every past day, with mood dots from your check-ins • Search and filter once your stack grows • Notes on stacks and on individual supplements • Reorder stacks and items to match how you take them • Dark, light, and system themes Check in daily on your mood, energy, sleep, and focus. View your trends, run on/off experiments, and see whether a supplement moves the numbers. Correlations only appear once there is enough data behind them; Biostacks will not show you a pattern it cannot stand behind. Ask questions in the on-device AI chat: review your routine, explain an ingredient, or change your stack by describing what you want. Every suggested change appears as a review you accept or reject, with undo. Prefer your personal assistant? Copy the prompt, paste the answer back, and review the changes the same way. Privacy first: • Works fully offline • No account and no sign-up • Your health data stays on your device • Optional backup and sync to your own iCloud • Snapshots and version history, so you can roll back any change • Export everything anytime as JSON or PDF, or share a stack as plain text Everyday tracking covers dose logging, streaks, reminders, check-ins with rating trends, the library and barcode scanner, export, import, and backups. Biostacks Pro, an annual subscription with a 7-day free trial, adds StackScore insights, check-in correlations, historical trends, cost tracking, smart reminder tuning, and cloud sync. Whether you take a daily vitamin D and omega-3 or manage a full stack of supplements, nootropics, and peptides, Biostacks gives you one private place to log your intake, stay consistent, and understand how your routine fits together.

Screenshots

myStack4 screens
Biostacks4 screens

Verdict

The call

The clearest difference is in-app purchases: myStack at none against Biostacks's 2. myStack also leads on ratings volume (7 vs 1). Biostacks's advantage is update cadence (every 10 days vs every 3 months). On price, rating, ads and device support 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. Biostacks sells 2 in-app purchases, starting at $3.99 per month. myStack asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for myStack against 5.0 for Biostacks. That said, the two scores are not equally well evidenced: myStack has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

myStack ships an update every 3 months, Biostacks every 10 days. The most recent releases landed on August 17, 2026 and September 18, 2026 respectively.

Scorecard4 real differences · 6 level
myStack versus Biostacks: the parameters behind the verdict, then further details
ParametermyStackBiostacks
PriceFreeFree
Rating5.0 (7 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings7 — better1
Update frequencyEvery 3 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.1 — better15.1
Further details — not scored
Size2 MB63 MB
Age rating17+17+
DeveloperBalam LLCHmujo LLC

Customer experience

myStack

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

Biostacks

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

myStack

No in-app purchases

2 purchases

Biostacks

Subscriptions2
  • Biostacks Pro - Monthly7 Days trial$3.991 Month
  • Biostacks Pro - Annual14 Days trial$24.991 Year

Questions

Is myStack free?
myStack is free to download, with no in-app purchases.
Is Biostacks free?
Biostacks is free to download, with in-app purchases available.
Which has better reviews, myStack or Biostacks?
myStack and Biostacks are both rated 5.0 out of 5 on the App Store, from 7 and 1 ratings respectively.
Do myStack or Biostacks have ads?
Neither myStack nor Biostacks shows ads.
Which is updated more often, myStack or Biostacks?
myStack ships an update every 3 months, and Biostacks every 10 days. Most recently, myStack was updated on August 17, 2026 and Biostacks on September 18, 2026.

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