Peptides Calculator vs PepStack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Peptides Calculator
This app helps users log, organize, and manage their peptide preparation process. It offers features for calculating reconstitution details, saving vial records, and accessing educational content. An optional subscription unlocks unlimited entries, enhanced tracking, and multi-device sync.
- Log and calculate reconstitution details
- Save and organize vial records
- Browse peptide reference library
- Access educational videos and articles
- Track weight over time
- Multi-device sync (Pro)
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Peptides Calculator — the all-in-one peptide tracker and reconstitution calculator. Log, organize, and manage your peptide preparation process in one place: reconstitution math, BAC water (bacteriostatic water) amounts, syringe units and mL, vial records, and dose logs. Whether you're engaging in research, personal study, or general wellness tracking, this peptides calculator keeps your information clear and organized. Free Features: Peptide reconstitution calculator — total amount (mg), diluent/BAC water volume, and units per insulin syringe or mL GLP-1 friendly logging — record units, dates, and notes for any peptide protocol Vial tracker — save and organize vial records with preparation dates and usage logs Injection log with site tracking Browse a general peptide reference library Access educational videos and articles Track your weight over time with a simple chart No login required for basic features More Built-In Tools: Fasting timer with Live Activities Meal and macro logging Lab results tracking and charts Dose reminders, streaks, home-screen widgets, Apple Watch app, and iMessage protocol sharing Go Pro – Unlock Even More (Subscription Required): Unlimited vials and log entries Weight & calendar tracking with enhanced charts Multi-device sync (sign in with Apple or Google for secure data access) Priority customer support Early access to new features and Pro-only updates All current and future premium features unlocked A subscription is required for unlimited access to Pro features. You can choose a monthly or yearly plan. Subscription auto-renews unless canceled at least 24 hours before the end of the current period. Manage your subscription anytime in your App Store account settings. Disclaimer Peptides Calculator is intended strictly for personal, educational, and informational purposes. This app is not a medical device and does not provide medical advice, diagnosis, treatment recommendations, or dosage guidance. The app does not suggest or imply the use of any specific peptides, medications, or substances. It is a self-managed logging tool for personal tracking only. Users are advised to consult with a licensed physician or medical professional before making any decisions related to health, medications, supplements, or treatment options. Peptides Calculator is not affiliated with any pharmaceutical company, healthcare institution, or regulatory authority. The app is not intended to replace professional medical consultation, diagnosis, or care. Privacy Policy: https://www.peptidescalculator.app/privacy-policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
PepStack
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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
Verdict
The clearest difference is update cadence: PepStack at every 2 days against Peptides Calculator's every 5 days. PepStack also leads on iOS requirement (15.5 vs 17.6). 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
Both are free to download. Peptides Calculator sells 11 in-app purchases, starting at $9.99 per month 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.
Peptides Calculator ships an update every 5 days, PepStack every 2 days. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.
| Parameter | Peptides Calculator | PepStack |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (173 ratings) — better | — |
| Positive reviews | 54.5% of reviews | — |
| Number of ratings | 173 — better | — |
| Update frequency | Every 5 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPod |
| Requires iOS | 17.6 | 15.5 — better |
| Further details — not scored | ||
| Size | 77 MB | 85 MB |
| Age rating | 17+ | 4+ |
| Developer | Sphnix, Inc | Max Berktold |
Bugs and requests
Peptides Calculator
Reported bugs
2 issues- All vials disappeared after an update
- Unable to find how to update streaks and last taken
Requested features
4 requests- Add shot tracker to record when a dose was taken
- Allow editing of vial information and dosing
- Add option to set cycle length in weeks, not just days
- Allow changing dose for different weeks when titrating
PepStack
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Peptides Calculator
- Monthly Premium Access7 Days trial$9.991 Month
- Family Monthly Premium Access$14.991 Month
- Premium Plus7 Days trial$14.991 Month
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- Premium Plus Family (Montly)$19.991 Month
- Pro Loyalty Yearly$54.991 Year
- Yearly Premium Access7 Days trial$99.991 Year
- Premium Plus Loyalty Yearly$99.991 Year
- Family Yearly Premium Access$149.991 Year
- Premium Plus (Yearly)7 Days trial$149.991 Year
- Premium Plus — Family (Yearly)$199.991 Year
- Remove Ads$2.99
PepStack
- PepStack Premium (Monthly)$2.991 Month
- PepStack Premium (Yearly)$22.991 Year
Questions
Is Peptides Calculator free?
Is PepStack free?
Do Peptides Calculator or PepStack have ads?
Which is updated more often, Peptides Calculator or PepStack?
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