Peptide Tracker & Calculator vs Stackr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Peptide Tracker & Calculator
This app helps you meticulously track and calculate peptide dosages, inventory, and injection sites. It provides smart alerts for low stock and detailed logs of your usage history for research, fitness, or therapeutic protocols. Your data is stored securely and privately on your device.
- Comprehensive peptide inventory management
- Precise dosing log and calculation support
- Intelligent injection site rotation tracking
- Smart low stock alerts
- Detailed dose history review
- Secure local data storage
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The Ultimate Peptide Tracker & Calculator for All Your Protocols Take control of your peptide journey! Whether you're deep into peptide research, optimizing for fitness with performance peptides, aiding recovery with compounds like BPC-157 or TB-500, exploring biohacking protocols, or managing GLP-1 agonists like Semaglutide and Tirzepatide, Peptide Tracker & Calculator is your essential management tool. Stop relying on messy notes or complex spreadsheets – track everything accurately in one secure, easy-to-use app. Comprehensive Peptide Inventory Management: Log Any Peptide: Maintain a detailed database of all your compounds – from research peptides and GHRP/GHRH analogs (like CJC-1295 or Ipamorelin) to healing peptides and GLP-1s. Track Critical Vial Data: Record concentration (mg/mcg), units, vial size (ml), reconstitution liquid (e.g., BAC water), date, storage conditions (fridge/freezer), source, batch number, and expiration dates. Essential for consistency and safety across all peptide protocols. Smart Low Stock Alerts: Visual indicators warn you when any peptide vial is running low, helping you reorder before interrupting your research, peptide cycle, or therapy. Precise Dosing Logging Support: Accurate Dose Recording: Log every administration with meticulous detail: specific peptide used, dose amount (mg/mcg/IU), date/time, method/site (subcutaneous, intramuscular), and personal notes for context (e.g., "pre-workout," "post-injury"). Complete Dose History: Review your entire usage history for any tracked peptide. Filter logs by compound (e.g., view all BPC-157 doses) to analyze patterns, effectiveness, and adherence. Perfect for managing complex peptide stacks or cycles. Intelligent Injection Site Rotation: Smart Site Tracking: Maintain a personalized map of injection sites with customizable rest periods for optimal absorption and tissue recovery. Rotation Recommendations: Receive intelligent suggestions for your next injection site based on usage history and proper rotation patterns. Site Status Monitoring: Color-coded indicators show which sites are ready for use, need rest, or are inactive, helping prevent site overuse and associated complications. Find Information Instantly: Quick Search: Locate specific peptides, inventory details, or past dose logs in seconds. Privacy You Can Trust: Your peptide usage and research data are confidential. All information entered into Peptide Tracker & Calculator is stored securely and locally on your device only. We never access, collect, or store your personal data. Master Your Peptide Regimen: Peptide Tracker & Calculator is the indispensable tool for researchers, athletes, biohackers, and anyone utilizing peptides for performance, recovery, longevity, or wellness. Download today and bring precision and organization to your peptide management! Subscription Information: • Monthly and annual subscription options available • Annual subscription includes a 3-day free trial • Payment will be charged to your Apple ID account at confirmation of purchase • Subscription automatically renews unless auto-renewal is turned off at least 24 hours before the end of the current period • Account will be charged for renewal within 24 hours prior to the end of the current period • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription Privacy Policy: https://glp1.app/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Stackr
This app simplifies tracking peptide and GLP-1 doses, including supplies like vials and pens. It offers smart reminders, home screen widgets, and visual charts of estimated active levels based on half-life. Designed for users managing peptide protocols, it keeps your dosing information organized and accessible.
- Log peptide and GLP-1 doses
- Track vials, pens, and other supplies
- Smart reminders for next doses
- Home screen widgets
- Estimated active level charts
- Multi-peptide stack tracking
- Reference pages for common compounds
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Stackr is the all-in-one tracker for your peptide and GLP-1 protocol. Every dose, vial and meal in one place, with the math done for you. KEY FEATURES • Dose tracking and reminders Log a dose in seconds from your Home screen. Run daily, weekly, every-few-days or specific-day schedules, and several protocols at once. Reminders make sure you never miss a dose, and Home Screen widgets show what's next. • Dose calculator Enter your vial strength, water and dose, and see exactly how many units to draw on a U-100 or U-40 syringe. Works in mcg, mg, IU and units. • Supplies and vials Track vials, pens and other supplies. Stackr counts down what's left every time you log and warns you before you run out. • Progress Keep your weight, progress photos and dose history together, with a calendar of taken and missed doses and estimated active levels from your logs. • Food and calories Snap a meal, scan a barcode, search a food or just say what you ate. Stackr tracks calories and protein against your daily plan. • Stackr Coach Ask the AI coach questions about your routine and your meals, any time. • Learn Reference pages for semaglutide, tirzepatide, retatrutide, BPC-157, TB-500, GHK-Cu and 100+ more, with research status and sources. WHY STACKR • Built for GLP-1s and peptides, from one weekly shot to a full stack • Pounds or kilograms, mcg or mg, U-100 or U-40 • Syncs across your devices when you sign in • Message the team directly from Settings Stackr is a personal tracking and educational app. It does not give medical advice, prescribe treatments or tell you which peptide, dose or schedule is right for you. Always talk to a qualified healthcare professional. Active levels and photo-based nutrition values are estimates. SUBSCRIPTION Stackr is free to download. Full access requires a paid Stackr+ subscription. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel your subscription in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://getstackr.app/privacy
Screenshots
Verdict
The clearest difference is rating: Peptide Tracker & Calculator at 4.8 against Stackr's 4.4. Peptide Tracker & Calculator also leads on ratings volume (573 vs 174). Stackr's advantage is chart position (#206 vs unranked). On price, review sentiment, update cadence and ads 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. Peptide Tracker & Calculator sells 4 in-app purchases, starting at $3.99 per month and Stackr sells 7 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Peptide Tracker & Calculator holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 573 and 174 respectively. Written reviews point the same way: 70% of Peptide Tracker & Calculator's written reviews are positive against 67% of Stackr's.
Peptide Tracker & Calculator ships an update every 2 days, Stackr every 4 days. The most recent releases landed on October 20, 2026 and October 18, 2026 respectively.
| Parameter | Peptide Tracker & Calculator | Stackr |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (573 ratings) — better | 4.4 (174 ratings) |
| Positive reviews | 69.8% of reviews — better | 66.7% of reviews |
| Number of ratings | 573 — better | 174 |
| Update frequency | Every 2 days — better | Every 4 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | — | #206 — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 58 MB | 88 MB |
| Age rating | 12+ | 12+ |
| Developer | David Dzeveckij | Stackr Holdings LLC |
Customer experience
Peptide Tracker & Calculator
Stackr
In-app purchases
Peptide Tracker & Calculator
- Full App Access (Monthly)$3.991 Month
- Full App Access (Monthly)$4.991 Month
- Full App Access (Yearly)3 Days trial$19.991 Year
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- Full App Access (Yearly)3 Days trial$24.991 Year
Stackr
- Stackr+ Weekly$7.997 Days
- Monthly$12.991 Month
- Stackr+ Yearly$29.991 Year
Show 4 moreShow fewer
- Stackr+ Yearly$49.991 Year
- Stackr+ Yearly3 Days trial$49.991 Year
- Stackr+ Yearly$59.991 Year
- Yearly3 Days trial$69.991 Year
Questions
Is Peptide Tracker & Calculator free?
Is Stackr free?
Which has better reviews, Peptide Tracker & Calculator or Stackr?
Do Peptide Tracker & Calculator or Stackr have ads?
Which is updated more often, Peptide Tracker & Calculator or Stackr?
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