Calculator
InjectBuddy
Web — Free (no login)
App Store (iOS)
Not on iOS
Google Play (Android)
Not on Android
InjectBuddy is a calculator tracking app available on Web, priced as free (no login). Browser-only calculator suite; cycle plotter; nothing stored. It hasn't gathered enough store ratings to judge by the numbers yet. On paper it ships 0 of the 10 standard tracking features and 0 of the 5 genuinely-advanced ones we look for. Like most of the field, it leans on the same core set of features everyone else has.
The verdict
Useful, but arguably a feature rather than a standalone app.
Core features
Reconstitution calculator
Injection-site rotation
Half-life curve
Apple Health / sync
An AI gimmick
Standard tracking features
Dose calculator
Reminders
Inventory
Weight tracking
Side effects
Progress photos
Cloud sync
Local privacy
Data export
Blends
Advanced features
0/5Claim Audit — Cross-checks marketing claims against actual cited research.
iMessage / SMS logging — Log a dose by texting it. No app-open required.
MCP server — Model Context Protocol endpoint so your LLM can read your stack.
Interaction checker — Flags stacking conflicts and contraindications.
Clinician dashboard — A real portal your provider can log into.