BerryBox LLC builds iOS and web software. Four apps are live on the App Store today, each with its own site, and each one is researched, built, shipped, and supported in house.
Founded by Garret Keyhani · Chicago, IL · four apps on the App Store
Four products, all live on the App Store, all built and supported by BerryBox. Every screen below is the real app.
AI crypto trading, driven by the news.
BeNow watches ten financial news feeds around the clock, turns headlines into buy, sell, or hold signals with Azure OpenAI, and can place the trades on Kraken for people who want it to. It launched in July 2025 and has been running in production ever since.
Python, Google Cloud Run, Compute Engine, Firebase, Azure OpenAI, Kraken API, Expo / React Native, TypeScript
Build a bot that thinks like you.
Sentari began as an iteration on BeNow and became its own product. The heart of it is the Bot Lab, a no-code builder loosely inspired by Scratch, where you assemble an autotrader from a curated set of blocks. Bots can be mood adaptive, getting bolder when the market is fearful and more careful when everyone else is greedy. Sentari also runs as a full web app in the browser, with the same signals and the same Bot Lab.
Expo / React Native, TypeScript, Firebase, Python on Google Cloud Run, Kraken API, Next.js
Know what to set aside.
Sero is for 1099 creators who feel a jolt every time they get paid. It answers one question: how much of this is actually mine. A Swift tax engine does the math against published IRS figures, and the free calculator on the website is pinned to that same engine by 259 shared test vectors, so the app and the site cannot disagree by a dollar.
SwiftUI, Swift tax engine, Supabase Edge Functions, Claude API, RevenueCat, Next.js
The month you claim decides what every month pays.
Whenwise helps people decide when to claim Social Security. It runs the Social Security Administration's published formula to the dollar, entirely on the phone, and shows the estimated check at every claiming age from 62 to 70 along with the break-even. Version one makes zero network calls: no account, no email, and nothing leaves the device because nothing can.
SwiftUI, Swift engine, StoreKit 2, Next.js
Where there is a published source of truth, the math is tested against it.
Whenwise runs the Social Security Administration's published formula. Sero's tax engine is tested against published IRS figures, and the calculator on its website is pinned to that engine by 259 shared test vectors. The numbers are the product, so they get treated that way.
BerryBox LLC is an independent software studio founded by Garret Keyhani, a software engineer in Chicago. It is small on purpose. Every app is researched, designed, built, shipped, and supported by the same hands, which is why the roster is four and not forty.
The work tends toward narrow problems that have a correct answer somebody deserves to see: what a Social Security check is actually worth at 67, what share of a payout belongs to the IRS, what the news just did to a position. The apps stay focused, the math stays tested, and the privacy defaults stay conservative.
One address for support, press, and anything else. A person reads it.