Regimen vs Peptide Tracker & Calculator

Privacy-First vs Cloud-First: Two Legitimate Approaches

Peptide Tracker & Calculator and Regimen are built on fundamentally different architectures. Peptide Tracker & Calculator uses local-only storage — no server, no cloud, no account required. Regimen uses cloud storage with row-level security and requires authentication. Neither architecture is wrong. They reflect different priorities.

If you want your dose history to never touch a server, Peptide Tracker & Calculator is the cleaner option. If you want your dose history available on every iOS device you own and want AI-assisted protocol setup, Regimen is designed for that.

What Peptide Tracker & Calculator Does Well

This is a well-built solo-developer app by David Dzeveckij with multi-platform reach that larger teams haven't matched. It runs on iPhone, iPad, Mac, and Apple Vision — the broadest Apple platform coverage in this category.

Vial inventory management is well-developed: you enter vial concentration, storage conditions, batch numbers, and expiration dates, and the app tracks remaining volume with dosage calculations based on the vial parameters. Regimen tracks vial inventory too — log an open vial and Regimen projects its run-out date from your dose schedule and alerts you when to reorder — but Peptide Tracker & Calculator records more per-vial detail, including batch numbers and expiration dates.

The injection site rotation uses a "smart tracking system with customizable rest periods and color-coded status indicators" per the App Store listing. Sites light up based on how recently they were used, which is a practical visual system for managing rotation across multiple sites.

Protocol scheduling includes on/off cycles, which means it handles the same cycling patterns Regimen supports.

The price is the lowest in this category: $19.99–$24.99 per year based on the App Store listing. For users who want solid tracking without paying a premium, this is competitive.

Where Regimen Is Different

Multi-device sync. Local-only storage means your iPhone and iPad have separate databases. If you log a dose on your iPhone, your iPad won't know about it. Regimen syncs everything through the cloud in real time — any device, same data.

AI care-plan scanning. If your protocols come from a provider as a printed care plan or pharmacy sheet, Regimen can read that photo and extract the protocol automatically. Peptide Tracker & Calculator's setup is manual. For users with complex multi-compound protocols, the difference in setup time is significant.

Vial label scanning. Regimen can also read individual vial labels, including lot codes from common compounding pharmacies, and create a protocol from the vial alone. No other app in this survey advertises this capability.

Immutable dose ledger with soft-void undo. Regimen's dose log is append-only. Corrections are recorded as void events with timestamps — the original record is preserved. This audit-trail design is intentional for users who may need to share their dose history with a medical professional.

PDF report sharing. Regimen generates a formatted, filterable PDF for doctor visits. The App Store listing for Peptide Tracker & Calculator mentions "data export for medical professionals" without specifying the format.

Where Peptide Tracker & Calculator Has the Advantage

Local-only privacy is a real differentiator. Some users — particularly in jurisdictions with stricter data residency concerns, or users who don't trust backend services — specifically want their health data to never leave their device. Peptide Tracker & Calculator is designed for exactly that requirement.

Vial inventory record-keeping is more detailed: batch numbers, concentration, storage conditions, and per-vial expiration dates. Regimen now tracks vial inventory as well — an open vial's remaining doses, a projected run-out date, and a reorder alert — but it does not record batch numbers or per-vial expiration dates, so Peptide Tracker & Calculator is the deeper tool if that level of per-vial documentation matters to you.

Platform breadth — Mac and Vision support — is unique. If you want to log on a Mac desktop or use the app with a Vision Pro, only Peptide Tracker & Calculator in this category supports that.

Annual pricing at $19.99–$24.99 is substantially less than Regimen's $79.99/year.

Who Should Use Which

Choose Peptide Tracker & Calculator if: You want local-only storage with no server dependency, you need Mac or Apple Vision support, you want vial inventory tracking with batch numbers and expirations, or you want the lowest price in the category.

Choose Regimen if: You want your dose history available on any iOS device via cloud sync, you receive protocols as printed care plans and want AI to extract them automatically, you need an audit-grade dose ledger with soft-void history, or you need a formatted PDF to share with your doctor.