Peptide Calculator and Tracker for iPhone and iPad
PeptideCalc is a native iOS app for user-entered reconstitution calculations and a connected protocol, schedule, and dose-log workflow. It includes injection-site records, an inventory tracker, insights, optional Apple Health import, and optional iCloud sync for supported app data without a recurring subscription. Review its privacy and data controls.
PeptideCalc performs calculations and recordkeeping from values you enter and does not determine whether a medication, dose, administration site, rotation interval, or schedule is clinically appropriate.
Looking for the reverse calculation? Follow the seven steps to calculate Water Amount from a chosen syringe-unit mark.
$4.99 one-time purchase • 4.9★ from 217 US App Store ratings as of August 10, 2026 • iOS 18.6+
Built for iOS
Optimized for iPhone and iPad
Every feature is designed to leverage iOS capabilities, from Apple Health biometric sync to iCloud sync and native notifications.
- Native iOS Performance
Built specifically for iPhone and iPad with SwiftUI for a native calculator and tracking experience.
- iCloud Sync
Optional sync across your signed-in Apple devices when enabled. Start on iPhone, continue on iPad.
- Apple Health Import
Optionally import supported biometrics from Apple Health into Insights with read-only HealthKit access.
- Privacy Controls
No PeptideCalc account is required. Core records use local app storage by default, with optional Apple Health import and optional iCloud sync; Apple device backup and user-created export behavior is disclosed in the Privacy Policy.
- Smart Notifications
Optional iOS reminders for the schedules and times you enter.
- Instant Calculations
Reconstitution and unit calculations update from the vial, concentration, syringe, and amount values you enter.
- Schedule Integration
Calendar-style schedule views, active schedule tracking, countdown timers, and iOS notifications.
Feature list
Everything the iOS app handles for you
A factual overview of the calculation, scheduling, tracking, and data-control features in the current App Store version.
Scheduling & reminders
Organize user-entered routines with calendar views, status, and optional notifications.
- Visual calendar plus next-five countdown view for the medication and peptide routines you enter
- Schedule setup previews with calendar dates, reminders, color, backfill options, and titration steps before you save; when the titration start is empty or still matches the target, the app may prefill 25% of the target as an editable convenience
- Flexible cadences: weekly, bi-weekly, monthly, or fully custom routines
- Mark doses done, skipped, or missed and keep adherence trends up to date
- Optional iOS notifications for the reminder times you configure
Reconstitution calculator
Calculate concentration and syringe amounts from values you supply for vials, pens, liquids, and blends.
- Automatically solve Water Amount from a user-entered vial content, target dose, and chosen syringe-unit mark
- Supports mg, mcg, ng, pg, and IU workflows with unit-compatibility checks and visual draw guidance
- Track supplements, nasal sprays, liquids, capsules, pills, injectable pens, steroids, HGH, HCG, and custom medication types
- Supports U-100, U-50, U-40, U-30, and custom syringe calibrations
- Handles blends with up to four compounds and proportional unit conversions
- Works fully offline so calculations stay available anywhere
Protocol manager
Save your own protocol details, edit them inline, and reload them without re-entering every field.
- Unlimited protocols with favorites, alphabetical sort, and quick search
- One-tap loading into the calculator with instant recalculation on edit
- Optional iCloud sync for supported app data when you want it
- Use customizable dark mode, theme presets, tint colors, and accent colors across the app
- Keep separate variants of a protocol or routine side by side
Injection site tracking
Record where a dose was logged and review site history before the next entry.
- Choose from built-in locations or create custom sites
- Review last-used hints and the site attached to prior dose logs
- Add site-specific notes; the upcoming 2.7.9 release can surface the eligible site in your history with the longest rest as a recordkeeping shortcut, without evaluating anatomy or clinical suitability
Adherence & insights
Review the records you entered alongside optional metrics and modeled medication levels.
- Adherence summaries for completed, late, missed, and skipped records
- Optional Apple Health import for supported biometrics such as weight, body composition, resting heart rate, and sleep duration
- Symptom logging with severity and duration, plus optional dose context
- Biometric trend charts and medication level modeling from half-life and logged doses
Privacy & control
No ads, no account required, and clear controls for sync, Apple Health, notifications, and exports.
- Works offline by default with local on-device storage
- Apple Health access is optional and read-only; imported samples stay device-local and are excluded from PeptideCalc iCloud Sync, app-created backups, and exports
- Optional iCloud sync for supported app data across your own devices
- One-time purchase with no subscriptions, no ads, and no PeptideCalc account required
iOS Compatibility
PeptideCalc supports iPhone and iPad on iOS or iPadOS 18.6 and newer.
There is no Android or native macOS app. The free single-vial calculator is available in a modern web browser.
Why Download the iOS App?
Native iOS Performance
Built with SwiftUI for smooth, responsive calculations that feel natural on iOS.
Offline Capability
Run user-entered calculations and use local records without an internet connection.
Dark Mode
Automatic dark mode support that matches your iOS system settings.
Ready to get started?
Download PeptideCalc to keep the calculations and records you enter together on iPhone or iPad.
One-time purchase • No subscription