Comparison

Pep AI vs PepStack

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

Head to head
About

Pep AI

This app helps you meticulously track peptide research, including inventory, logs, nutrition, wellness, and notes. It replaces scattered data with an organized, private system for consistency and offers features like injection site tracking, side effect logging, and AI-powered meal scanning.

Highlights
  • Inventory & Organization
  • Injection Site Tracker
  • Side Effects Tracking
  • Nutrition Logging
  • Meal Scanner
  • Apple Health Integration
  • Bloodwork Tracker
  • AI Insights
Features
Read full description

Pep AI is the GLP-1 and Peptide tracker for shots, nutrition, side effects, weight, wellness, and everything in between. Use Pep AI for Zepbound®, Wegovy®, Ozempic®, Mounjaro®, Foundayo®, semaglutide, tirzepatide, oral GLP-1s, peptides, and weekly injection routines. GLP-1 and Peptide tracking shouldn’t mean scattered notes, forgotten injection sites, missed protein goals, and trying to remember how you felt after your last dose. Pep AI brings your routine together so you can stay consistent and understand your progress over time. NEW IN PEP AI 4.0 • A completely redesigned app: new Home, Dose and Progress screens • Arlo, your companion, with friendlier reminders that fit your day • Home Screen widgets, Live Activities and a redesigned Apple Watch app • Community groups to share progress with others on the same journey • In-app Help articles for every feature TRACK SHOTS, DOSES AND INJECTION SITES • Log GLP-1 and Peptide shots and doses • Give each medication its own dose schedule and reminder times • Track dose timing and history • Rotate injection sites with an interactive body map • Organize vial inventory and photos FOOD, PROTEIN AND WATER • Track calories, protein, carbs, fat and fiber • Quick Log, saved meals and photo meal scans for estimated macros • Log water and track hydration goals • View nutrition and hydration trends • Sync activity data with Apple Health SIDE EFFECTS AND WELLNESS • Log nausea, fatigue, appetite changes and other symptoms • Track symptom timing and severity • Connect symptoms with your dose history • Log energy and mood • Track sleep duration and quality PROGRESS • Track weight and trends over time • Add progress photos • Complete daily wellness check-ins • View your routine in a daily timeline • Earn achievements for staying consistent INSIGHTS AND REPORTS • View your tracking data in one dashboard • See patterns across nutrition, hydration, sleep, side effects and progress • View estimated medication levels and timing • Generate PDF reports to review with your healthcare provider ARLO Ask general educational questions about peptides and GLP-1s directly inside the app. WHY PEP AI Pep AI is built specifically for peptide and GLP-1 routines, giving you one simple place to stay organized and follow your progress. Pep AI is designed for tracking, organization and educational purposes only. It does not provide medical advice, diagnose conditions, recommend treatments or provide dosing instructions. Always consult your healthcare provider about medications, dosing, side effects or health concerns. A paid subscription is required to access Pep AI's tracking features. Your data is stored securely and synced to your account. We do not sell your personal data. Support: support@pepaiapp.com Privacy: https://pepaiapp.com/privacy Terms: https://pepaiapp.com/terms

About

PepStack

Read full description

PepStack – Stacks, Vitals, Blood & Training Plan your stack. Track your progress. See what actually works. PepStack is built for people who take their supplements seriously — and want to see how their stack relates to their body, blood and performance. Instead of five apps and a spreadsheet, it’s all in one place, neatly connected and fully private. Four areas, one picture: Stacks Build custom supplement stacks: compound, amount, dosage, schedule and phases — exactly how you run them. A visual plan shows what’s due when, and reminders make sure you never miss a dose. Vitals Connect Apple Health or Health Connect to pull in steps, sleep, resting heart rate, HRV and more automatically — or log your own metrics by hand. See how your routine shows up in daily life. Blood Log your blood tests — manually or via photo/PDF scan — and keep 100+ markers in view. With a plain-language marker wiki, personal reference ranges, trend charts and a side-by-side comparison of two tests (improved / worse / stable). Training Log your workouts, sets and progress and close the loop: stack, recovery and performance in one app. Everything in context The real value isn’t single numbers — it’s the full picture. Watch how your stack, vitals, blood markers and training move together over time, and make better decisions for yourself. Private by design Sensitive data is end-to-end encrypted — only you have access. Secure cloud backup & sync across your devices. No data sales. Your data is yours. Full stop. Who’s it for? Biohackers, athletes, self-optimizers and anyone ready to move their supplement routine from sticky notes to a clean, data-driven system. Stop guessing. Start tracking. Get PepStack. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://www.pepstack.net/de/privacy Support: https://www.pepstack.net/contact

Screenshots

Pep AI4 screens
PepStack4 screens

Verdict

The call

The clearest difference is ads: PepStack at none against Pep AI's shown. PepStack also leads on update cadence (every 2 days vs weekly). On price, in-app purchases, device support and iOS requirement 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. Pep AI sells 15 in-app purchases, starting at $3.99 per 7 days and PepStack sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Pep AI ships an update weekly, PepStack every 2 days. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Pep AI versus PepStack: the parameters behind the verdict, then further details
ParameterPep AIPepStack
PriceFreeFree
Rating4.7 (3.8K ratings) — better—
Positive reviews37.5% of reviews—
Number of ratings3.8K — better—
Update frequencyWeeklyEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, Apple WatchiPhone, iPod
Requires iOS16.415.5 — better
Further details — not scored
Size142 MB85 MB
Age rating17+4+
DeveloperZode Development LLCMax Berktold

In-app purchases

15 purchases

Pep AI

Subscriptions15
  • Pep Week Updated$3.997 Days
  • Pep AI Monthly2 variants$9.991 Month
  • Pep Month Updated4 variants$9.991 Month
Show 12 more
  • Pep AI Yearly Discount$19.991 Year
  • Pep AI Yearly$19.991 Year
  • Pep AI Yearly3 Days trial$24.991 Year
  • Pep Discount Updated3 Days trial$29.991 Year
  • Pep AI Yearly3 Days trial$29.991 Year
  • Pep AI Yearly$29.991 Year
  • Pep Year Updated$29.991 Year
  • Pep Year Updated$34.991 Year
  • Pep Year Updated$39.991 Year
  • Pep Year Updated3 Days trial$39.991 Year
  • Pep Year Updated3 Days trial$44.991 Year
  • Pep Year Subscription3 Days trial$49.991 Year
2 purchases

PepStack

Subscriptions2
  • PepStack Premium (Monthly)$2.991 Month
  • PepStack Premium (Yearly)$22.991 Year

Questions

Is Pep AI free?
Pep AI is free to download, with in-app purchases available.
Is PepStack free?
PepStack is free to download, with in-app purchases available.
Do Pep AI or PepStack have ads?
Pep AI shows ads; PepStack does not.
Which is updated more often, Pep AI or PepStack?
Pep AI ships an update weekly, and PepStack every 2 days. Most recently, Pep AI was updated on October 12, 2026 and PepStack on October 7, 2026.

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