Comparison

Peptide Vault vs Stack

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

Head to head
About

Peptide Vault

Log peptide doses, track injection sites, and manage custom regimens. Access a reference library of over 50 peptides and a reconstitution calculator. All data is stored privately on your device.

Highlights
  • Dose logging
  • Injection site rotation
  • Custom regimen building
  • Compound overlap reporting
  • Peptide reference library
  • Reconstitution calculator
  • On-device data storage
Features
Read full description

Peptide Vault is the tracking and research companion for people who take their protocol seriously. TRACK Track an FDA-approved GLP-1 (semaglutide, tirzepatide, and other approved GLP-1s): dose schedule, next-dose countdown, streaks, adherence, dose history, and reminders. Build the schedule you actually follow: every few days, chosen weekdays like Mon–Fri, or on/off cycles. BUILT AROUND YOUR SCHEDULE Pick your first dose day and your schedule patterns from it — weekly, twice weekly, three times weekly, every other day, or every two weeks. Log a dose in seconds. Your history lives on a calendar you can actually read. PEPTIDE VAULT PRO • My cabinet — save vial photos, ingredient amounts, mix dates and notes, with cabinet backup and restore. • Custom blend protocols — one schedule and one log for a multi-ingredient vial, with a recorded ingredient breakdown. • Coach — a research assistant grounded in your own protocol. Ask about the published research behind the compounds you track. Coach's answers are grounded in published research, and it never gives dosing or medical advice. • Track unlimited compounds across your whole protocol. • Open all 203 compounds in the research library — every entry referenced, with regulatory status, mechanisms, risks and side effects stated plainly. • Site rotation, suggested at every dose. • Dose history and trends across everything you run. • Journal with full record export, any time. COMMUNITY Join public conversations about app tips and staying organized. Posts and replies are moderated, with likes, sharing, reporting and blocking. Your optional Community profile and posts are stored on our servers; approved posts are public. Private tracking records are not posted automatically. Activity notifications are optional. YOUR DATA No account is required for private tracking. Your protocol, logs, and journal live on your device. Coach shares only what you approve — your compound names and stack summary, never your journal, notes, or Apple Health data. Peptide Vault is a tracking and reference tool. It does not provide medical advice, diagnosis, or treatment. Always consult a medical professional before using peptides. Peptide Vault Pro is an auto-renewing subscription: $39.99 per year or $9.99 per month (prices may vary by region). Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is 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 your subscription in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://100apps.app/privacy/peptide-vault

About

Stack

Features
Read full description

Stack is the all-in-one tracker for peptides, GLP-1 medications, and TRT protocols. Log every injection, set your own schedule, track your progress, and keep your full history organized in one private place. Built for adults working with a prescribing healthcare provider, Stack replaces scattered notes and spreadsheets with a simple, consistent system you control. You enter your own values (peptide name, dose, schedule, and sites) and Stack keeps them organized, reminds you, and shows your progress over time. FEATURES • Custom Protocols & Stacks — Build your own multi-peptide protocols with flexible schedules (daily, weekly, every X days, or custom). Run multiple stacks at once, each clearly organized. • Smart Dose Logging — Log every injection in seconds and see what's due today on your Home screen and calendar. A daily streak keeps you consistent. • Vial & Refill Tracking — Set how much each vial holds, watch it deplete with every dose, and refill in one tap. A tap-to-flip ring shows the exact percentage remaining. • Injection Site Tracker — Rotate sites with an interactive body map that remembers your recent spots, so you can avoid reusing the same area. • Apple Health Sync — Pull in weight, BMI, resting heart rate, HRV, sleep, steps, active energy, blood pressure, respiratory rate, body fat, lean mass, and VO2 max to see the full picture. • Progress Photos & Compare — Capture progress photos and view them side by side with weight and date overlays. Hide weight for privacy, then share a branded comparison. • Meal Scan — Snap a photo of your meal to estimate macros and keep nutrition alongside your protocol. • AI Assistant — Ask questions about your active stacks and protocols in a private chat built into the app. • Metrics & Insights — Clean charts and stats show how your protocol is trending over time. • Home Screen Widget — See your next dose and stay on track without opening the app. • Shareable Protocol Card — Generate a clean, branded card of your active protocol to save or share. PRICING Stack requires a subscription to unlock the full experience. IMPORTANT Stack is a personal record-keeping and organization tool for informational purposes only. It does not provide medical advice, diagnosis, or treatment, and is not a substitute for professional care. Always consult a qualified healthcare provider before starting, changing, or stopping any medication or protocol. Terms of Use (EULA): https://www.whatsyourstack.app/terms.html Privacy Policy: https://www.whatsyourstack.app/privacy.html Questions or feedback? Email us at contact@whatsyourstack.app.

Screenshots

Peptide Vault4 screens
Stack4 screens

Verdict

The call

The clearest difference is update cadence: Peptide Vault at weekly against Stack's every 2 weeks. On price, ads, in-app purchases 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. Peptide Vault sells 15 in-app purchases, starting at $4.99 per 7 days and Stack sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Peptide Vault ships an update weekly, Stack every 2 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 9 level
Peptide Vault versus Stack: the parameters behind the verdict, then further details
ParameterPeptide VaultStack
PriceFreeFree
Rating5.0 (9 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings9 — better—
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS17.0 — better18.0
Further details — not scored
Size56 MB106 MB
Age rating17+17+
DeveloperJacob TeagueAmari Thomas

In-app purchases

15 purchases

Peptide Vault

Subscriptions15
  • Peptide Vault Pro Weekly$4.997 Days
  • Peptide Vault Pro Monthly$9.991 Month
  • Peptide Vault Pro Monthly$12.991 Month
Show 12 more
  • Peptide Vault Pro Monthly$14.991 Month
  • Pro Annual$29.991 Year
  • Pro Annual — 7 Days Free7 Days trial$29.991 Year
  • Pro Annual — 14 Days Free14 Days trial$29.991 Year
  • Pro Annual3 Days trial$39.991 Year
  • Pro Annual$39.991 Year
  • Pro Annual — 7 Days Free7 Days trial$39.991 Year
  • Pro Annual — 14 Days Free14 Days trial$39.991 Year
  • Pro Annual — 14 Days Free14 Days trial$49.991 Year
  • Pro Annual$49.991 Year
  • Pro Annual — 7 Days Free7 Days trial$49.991 Year
  • Peptide Vault Pro7 Days trial$69.991 Year
2 purchases

Stack

Subscriptions2
  • Stack Weekly$9.997 Days
  • Stack Yearly$49.991 Year

Questions

Is Peptide Vault free?
Peptide Vault is free to download, with in-app purchases available.
Is Stack free?
Stack is free to download, with in-app purchases available.
Do Peptide Vault or Stack have ads?
Neither Peptide Vault nor Stack shows ads.
Which is updated more often, Peptide Vault or Stack?
Peptide Vault ships an update weekly, and Stack every 2 weeks. Most recently, Peptide Vault was updated on October 24, 2026 and Stack on October 28, 2026.

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