Introduction

If you spend enough time in the Bitcoin space, you eventually run into a highly specific, highly annoying problem: there are no good portfolio trackers built just for us.

If you want to track your stacked sats or quickly calculate a fiat-to-bitcoin conversion, you are usually forced to download a “crypto” app. 

These apps are inevitably bloated with thousands of altcoins (aka shitcoins) you don’t care about, bombarded with exchange ads, and worst of all, they almost always demand that you create an account so they can harvest your financial data.

I got tired of the noise. 

I just wanted a simple, private tool to track Bitcoin. 

So, I built one.

Welcome to Corn Stack.

Who is this for?

Corn Stack is built strictly for Bitcoiners. 

It is for the long-term holders, the sat-stackers, and the people who operate with a low time preference. 

If you want to track a diverse portfolio of 100 different web3 crap tokens, this app is not for you. 

If you want pure signal, you are in the right place.

The Core Features

I stripped away everything unnecessary and focused entirely on the tools a Bitcoiner actually uses on a daily basis:

• Live Market Data: The app silently fetches high-fidelity price updates in the background, supporting 38 different global fiat currencies.
• Two-Way Calculator: A built-in, lightning-fast calculator that lets you instantly convert your local fiat currency into BTC or Satoshis, and vice versa.
• Historical Charts: High-definition daily price charts that visualize Bitcoin’s macroeconomic trends to keep your perspective grounded.

What Actually Makes It Unique? (The Privacy Architecture)

I am not going to pretend Corn Stack is reinventing global finance. 

It is a portfolio tracker and a calculator. 

But what does make it unique is what it doesn’t do.

It doesn’t track you. 

Corn Stack was designed with a strict “Privacy by Design” architecture.

• Zero Accounts: There is no login screen, no email requirement, and no sign-up process.
• 100% Local Storage: Your portfolio data (how much bitcoin you hold) never leaves your physical device. It is saved directly to your iPhone’s local storage using Apple’s SwiftData framework. There is no cloud sync and no centralized database holding your financial footprint.
• Offline Capable: Because everything is stored locally, Corn Stack works perfectly when you are entirely off the grid. If you are on a flight or lose cell service, the app will instantly load your portfolio and the last known market prices from its local cache.

The only time the app ever reaches out to the internet is to anonymously ping a secure server for the current global price of Bitcoin. That’s it.

Protect Your Time

Corn Stack is entirely free to use.

Stack your sats securely, keep your data on your own device, and defend your time, which is your life.