Now available on iOS

Stack your protocol.
Track your transformation.

The all-in-one peptide tracker for serious protocols. Smart reconstitution, stack scheduling, body analytics, and nutrition — all in one beautifully engineered iOS app.

Download on the App Store See what's inside
600+
Compounds
AES-256
Encrypted
100%
On-Device
Stack app home screen with day streak, calendar, and stack tracking
Built different
On-device encryption
Pharmacokinetic-grade
HIPAA-aware design
No ads. Ever.
Features

Everything you need to run your protocol.

From the first reconstitution to lifelong analytics — Stack is built for the protocol-obsessed.

Smart Reconstitution

Input your peptide mg, BAC water, and dose — Stack calculates concentration, draw volume, and units to the line on your syringe.

Stack Scheduling

Build complex stacks with custom cycles — 5-on / 2-off, taper schedules, or anything in between. Stack tracks every dose.

Day Streaks

Stay consistent. Stack rewards compliance with streaks, completion badges, and a live calendar of logged, partial, and missed days.

Body Analytics

Track weight trends, body measurements, and progress photos. See how your stack moves the metrics that matter.

Nutrition & Macros

Scan meals, log macros, track water. Pair protein-first nutrition with your peptide protocol for results that compound.

Privacy By Design

All data lives on your device. AES-256 encrypted. No ads, no tracking, no selling your data. Your protocol stays yours.

Your dashboard

Every protocol, at a glance.

The home screen is your command center. See active stacks, today's doses, your streak, and tomorrow's schedule — without ever leaving the dashboard.

  • Live calendar with logged, partial, and missed days
  • Day streak counter to keep you on protocol
  • Quick-add doses from any screen with a single tap
Stack dashboard with calendar and stacks
Reconstitution calculator

Reconstitute like a pharmacist.

Stop guessing. Stack's calculator visualizes every draw against an actual syringe — so you hit your dose exactly, every time. Built for 0.3, 0.5, and 1 mL insulin syringes.

  • Auto concentration, draw volume, and unit calculations
  • Step-by-step reconstitution walkthrough
  • Track active vials and remaining doses
Reconstitution calculator with syringe visualization
Full body analytics

Peptides don't work in a vacuum.

Nutrition, hydration, weight, and recovery — every variable matters. Stack ties macros, water, and body composition to your protocol so you can correlate inputs with results.

  • Calorie, protein, fat, and carb tracking with meal scan
  • Hydration goals and one-tap logging
  • Home screen widgets for your next dose & active protocols
Profile screen showing nutrition, hydration, and body analytics
Pricing

Simple pricing.
Everything included.

Try Stack risk-free. Cancel anytime. No hidden fees, no upsells, no asterisks.

Weekly
$ 9.99 / week
Flexible billing. Ideal for shorter cycles or to try Stack out.
Equivalent annual cost $519.48 / year
Start weekly
Save $469
Yearly
$ 49.99 / year
Best value. Just $0.96 / week — billed annually.
vs. paying weekly Save 90% — $469/yr
Start yearly
Every plan includes
  • Unlimited stacks & peptides
  • Full reconstitution calculator
  • Nutrition, hydration & body tracking
  • Home screen widgets
  • AES-256 encryption, on-device
  • Cancel anytime

Both plans auto-renew. Cancel anytime from your Apple ID subscription settings.

iOS — iPhone & iPad

Your protocol deserves better tooling.

Download Stack and dial in your transformation today.

Download on the App Store