Protocol Execution System

You already know
what to do.
Stack holds the list.

No streaks. No badges. No notifications engineered to pull you back. Your protocols, structured, executed, logged.

App Store Free · iOS 16+

↓ tap a block to expand

Good evening.

Tuesday, 1 Apr

Today 0% · 0/23 steps

Positioning

Not a habit app.
A system app.

Habit apps are built for people becoming disciplined. Stack is built for people who already are. The distinction matters in every design decision.

Habit trackers

Gamified. Binary. Built around building habits.

Wellness apps

Domain-specific. Food, sleep, or fitness. Not all three.

Productivity apps

Calendar-centric. High overhead. Wrong job.

Notes

No execution layer. No logging. Just text.

Stack
Structured execution across all protocols. Zero overhead.

Import

Paste anything.
Stack parses it.

Notes, a WhatsApp message, an AI summary, a list you wrote at 2am. The messier the better. Stack turns raw text into a structured protocol with blocks, steps, and scheduling. No templates. No forms.

BUILD FROM TEXT

PARSE PROTOCOL

ADHERENCE

7D 14D 30D

AI ANALYSIS

Supplement adherence drops sharply on days following late training sessions. Skincare evening block is your most consistent at 94% across 14 days. Magnesium completion correlates with sleep logging. Consider anchoring it to a fixed pre-sleep trigger rather than a time window.

Insights

The log you never
kept, kept automatically.

Every check is recorded. Browse any past day. The AI analysis looks at cross-protocol patterns and returns something specific. Not "keep it up." An actual inference from your actual data.

Who it's for

For people who run their
life like a system.

Zero gamification

No streaks to protect. No badges. No points. Stack does not celebrate you for completing a block. It logs it and moves on. The acknowledgement is the empty checklist.

No calendar sync

Stack is independent. It does not touch your calendar, your tasks, or any other system. One job: protocol execution. Everything else is out of scope by design.

Passive logging

Every check is recorded without asking you to journal. Browse any past day. "Missed B12" is a note you can add. Stack stores it without commentary.

You already know what to do. Stack holds the list.

Not a habit app.A system app.

Paste anything.Stack parses it.

The log you neverkept, kept automatically.

For people who run theirlife like a system.

Your routinesare already built.

You already know
what to do.
Stack holds the list.

Not a habit app.
A system app.

Paste anything.
Stack parses it.

The log you never
kept, kept automatically.

For people who run their
life like a system.

Your routines
are already built.