Stackr: Peptide Tracker
Dose Calculator, Supply Alerts
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Track 3 peptides free, forever — no account needed. Pro unlocks custom alert thresholds, unlimited items, restock history, and CSV export.
Track your peptides, GLP-1s, and supplements without a spreadsheet. Start free — no account, no ads, no tracking. Stackr tells you exactly when to reorder, factoring in shipping time, so you never run out mid-protocol.
FREE TO START
Track up to 3 items free. No account required. Your data stays on your device.
NEVER RUN OUT
• Depletion tracking with color-coded urgency — see days remaining at a glance
• Reorder alerts that factor in your vendor's shipping time
• Restock history and reorder logging
NEVER OVERPAY
• Cost per dose, daily spend, and annual run-rate
• Track what each vendor actually costs you
RECONSTITUTION CALCULATOR
• Vial size + BAC water + target dose → exact syringe markings
• U100, U40, and standard mL syringes
• Pre-mixed vials too (TRT, HCG) — enter mg/mL and go
• Saves your calculations to the item
PROTOCOLS THAT MATCH REAL LIFE
• Injection-day scheduling and multi-compound protocols
• Titration schedules — ramp your dose week by week
• Cycling support with on/off day tracking
• Injection site rotation
LOG IT IN SECONDS
• One-tap dose logging with automatic inventory decrement
• 100+ compound library with autocomplete
• Energy, mood, sleep, and recovery check-ins
• Export everything to CSV
PRIVATE BY DEFAULT
Everything is stored on your device. No account needed. We don't sell your data, show ads, or track you across other apps. Optional cloud backup uses your email only — protected by row-level security so only you can read your own data.
STACKR PRO
Unlimited items, cloud sync across devices, titration schedules, cycling, custom alert thresholds, full restock history, vendor links, and CSV export.
• Monthly: $4.99/month
• Annual: $39.99/year (includes 3-day free trial)
Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. Manage or cancel your subscription in your Apple ID account settings.
Stackr is a personal tracking tool and does not provide medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement, medication, or protocol.
Terms of Use: https://www.mystackrapp.com/terms
Privacy Policy: https://www.mystackrapp.com/privacy
Set your own alert thresholds
Pro members can now choose when an item turns red, orange, and yellow instead of living with 3, 7, and 14 days. Your notifications follow the same numbers, so a heads-up at 21 days actually says 21 days. Settings › Notifications › Alert thresholds.
Reorder heads-up is editable
How far ahead you're warned to reorder — 10 days by default — finally has a control. It was doing the work all along with no way to change it. Free for everyone.
New name, same app
Stackr is a tracker first, so the name says so. The reconstitution calculator isn't going anywhere.
The developer, Alexander Hoogland, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Alexander Hoogland
- Size
- 55.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Alcohol, Tobacco, Drug Use or References
- In-App Purchases
Yes
- Stackr Pro Annual $39.99
- Stackr Pro Monthly $4.99
- Copyright
- © 2026 Alexander Hoogland