Professional Peptide Calculator in your pocket
Get precise measurements for peptide reconstitution and dosage calculations. Create custom schedules with reminders, load preset GLP-1 medications instantly, and optimize multi-peptide blends like the Glow & Klow Protocols. No ads, works offline, syncs across devices.
Everything you need to stay on schedule
Map every dose, stack, and schedule in one place. PeptideCalc.io pairs precise calculations with scheduling, reminders, and injection tracking so you never miss a protocol milestone.
- Smart Scheduling
Visual calendar, countdown view, and notifications keep every peptide, GLP-1, or custom blend on time - even with multi-day dosing or alternating cadences.
- TRT & Steroid Support
Track testosterone (cypionate, enanthate, propionate, blends), nandrolone, primobolan, tren, EQ, anavar, winstrol, and any custom steroid with precise mg/mL logging so TRT users and performance protocols stay dialed.
- Medication Library
Start faster with preset routines for Ozempic®, Wegovy®, Mounjaro®/Zepbound™ (tirzepatide pens), Retatrutide®, Cagrilintide®, semaglutide, liraglutide, and more.
- Injection Tracking
Log rotation sites, mark doses done or skipped, and unlock celebration moments that reinforce your streak.
Stay on schedule without second guessing
Build flexible dosing calendars for every peptide in your stack. Weekly, bi-weekly, or fully custom cadences slot into a personal calendar that keeps Ozempic®, Wegovy®, Mounjaro®, testosterone TRT protocols, and custom blends side by side.
Countdown timers, reminders, and adherence trends surface the next dose before you need it. Mark a dose done, missed, or skipped, and the schedule adapts instantly so you always know what’s next - even for multi-day split dosing or custom interval rules.
Schedule
October 2025
Upcoming doses
BPC-157
in 2 days · 8:00 AM
Ozempic®
Next Saturday · 8:00 AM
Cagrilintide
in 5 days · 7:30 AM
Scheduling built for real protocols
Specific controls your calendar actually needs
Go beyond weekly reminders. PeptideCalc handles alternating cadences, stacked protocols, and mid-cycle adjustments so your schedule always reflects reality - whether you are running GLP-1 titrations, TRT, or daily healing peptides.
Alternating & split cadences
Schedule M/W/F testosterone, weekly GLP-1 injections, and twice-daily BPC-157 in the same calendar. Set every cadence in minutes or hours with custom intervals.
Adaptive reminders
Mark a dose done, skipped, or missed and the next event auto-shifts. Countdown + “next five” views surface what is due soon without digging through menus.
Dose-specific notifications
Push alerts show the exact syringe pull in your units (IU, mL, mg/mL) plus the vial and protocol name, so you know what to draw before opening the app.
Stack-aware calendar
Color-coded timelines keep peptides, GLP-1 pens, oral meds, and injectables aligned. Upcoming cards carry protocol names so you never mix up compounds.
Reschedule with context
Pause or move a protocol mid-run, add catch-up doses, or split a weekly injection into two smaller pulls - your adherence log and streaks stay intact.
Reminder windows
Create heads-up notifications before injection windows, not just at the exact time, so you can prep supplies and sanitize sites without rushing.
Offline proof
All schedules, reminders, and logs work fully offline. Everything syncs via iCloud once you are back online, keeping lab or travel workflows uninterrupted.
Load the right dose in seconds
Tap into a medication library pre-loaded with popular GLP-1 protocols and tri-peptide blends, then customize every parameter to match your regimen. Inline edits recalculate instantly so you always know the exact draw.
Save unlimited plans, prioritize favorites, and keep variants ready for every patient or personal stack. Import and export JSON, and rely on iCloud sync to mirror updates across devices automatically.
- GLP-1 presets included: Ozempic®, Wegovy®, Mounjaro®/Zepbound™ (tirzepatide), Retatrutide®, Cagrilintide®, semaglutide (compounded), liraglutide, and custom blends.
- Steroid/TRT coverage: testosterone cypionate, enanthate, propionate, Sustanon® blends, nandrolone decanoate/phenylpropionate, boldenone undecylenate (EQ), trenbolone acetate/enanthate, primobolan (methenolone), masteron (drostanolone), anavar (oxandrolone), winstrol (stanozolol oral/injectable), turinabol, anadrol, and any custom steroid entry.
- Track any oral medication or injectable pen - including prefilled tirzepatide pens - alongside vials and lyophilized peptides with the same scheduling and logging tools.
Track every injection with confidence
Rotate sites with smart suggestions, add custom locations like glutes and lats, and review your history in one tap. Flexible units, syringe formats, and party mode confetti keep dosing precise and motivating.
Prefer dark mode? Need decimal commas or larger text? Toggle the interface to match your preferences and stay focused on the protocol, whether you’re at home, in clinic, or traveling.
Third Dose Logged!
You’re on fire - three doses logged with perfect consistency. Keep that streak alive!
Private, offline, and built for momentum
PeptideCalc.io works completely offline with no accounts, ads, or analytics collecting your data. Everything stays encrypted on-device and can be exported whenever you need a backup.
Regular updates add the features the community requests most - from iCloud sync enabled by default to smarter scheduling workflows - so you can focus on adherence, not admin.
iCloud sync
Your schedules, calculations, and logs stay in sync - automatically
Every protocol, dose log, and reminder syncs through iCloud so updates on iPhone or iPad appear everywhere without accounts or exports. Works offline first, then syncs the moment you are back online.
Offline-first
Calculate, log, and schedule without signal. Sync resumes instantly when you reconnect - no conflicts, no lost doses.
Private by design
No ads, accounts, or tracking. Data stays encrypted on device and in iCloud; you control exports and backups.
Multi-device ready
Keep iPhone and iPad in lockstep. Start a protocol on one device, adjust doses on another, and keep streaks aligned.
Auto-backups
Protocols, saved presets, and adherence logs back up through iCloud so you can restore quickly if a device is replaced.
Trusted by Researchers Worldwide
Join thousands of satisfied researchers using PeptideCalc.io for their daily calculations
Really loving this app. Now I can easily track all my peptides in on place! 5 Stars!! I tried a few others (iOS and web based) but they all were either missing something I wanted or the UI was lame. Loving this app.
-dragons