iOS Engineer · AI-Powered Apps · YC Alum

Daniel Berger

I build mobile products and AI workflows.

Native iOS engineering and AI-powered workflows — agents, RAG pipelines, LangChain — shipped to real users through Pomona App Studio, sharpened by a decade of engineering at Microsoft, Branch, and AppNexus.

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9:41

Atlas Intel

Atlas Finance

Math Hero

CPA Prep

CardValue

Book Buddy

TCG Scanner

City Search

Selected Work

Products, not prototypes

Native iOS apps with AI-powered features, designed, built, and shipped end-to-end through Pomona App Studio.

Flagship · News & Intelligence

Atlas: Global Intelligence

A professional geopolitical intelligence platform — an interactive 3D globe tracking real-time events across 195 countries, country risk scoring, maritime chokepoint monitoring, aviation intelligence, and AI-generated daily briefs.

Platforms iOS · Android (in development)

Built Real-time event pipelines, an interactive geospatial globe, AI-generated intelligence briefs, and native iOS + Android clients sharing one backend.

SwiftUI Kotlin & Jetpack Compose Mapbox Firebase LLM-generated briefs

Explore Project

Atlas Global Intelligence interactive globe showing real-time events

Finance

Atlas: Finance

A financial intelligence platform — live quotes and streaming market data across equities, bonds, commodities, forex, and crypto, with AI-generated market briefs three times a day.

Platforms iOS · Android (in development)

Built Real-time financial data streaming tuned for battery life, plus pre-market, midday, and after-close AI-generated market briefs.

SwiftUI Firebase Real-time data streaming LLM-generated briefs

Explore Project

Atlas Finance AI-generated market digest

Education

CPA Exam Prep

An adaptive CPA exam companion — spaced repetition flashcards, timed practice exams, and personalized study plans across all six exam sections.

Platforms iOS

Built An adaptive testing engine that treats each exam section separately instead of one static question bank, with spaced repetition flashcards and detailed session analytics.

SwiftUI Offline-first Spaced repetition

Explore Project

CPA Exam Prep timed practice exam screen

CPA Exam Prep spaced repetition flashcards

Education

Math Hero

A gamified high school math app — 700+ lessons across Algebra, Geometry, Trigonometry, Statistics, Precalculus, and Calculus, with real-time Math Duels and a 24/7 AI tutor.

Platforms iOS

Built An AI tutor designed to teach instead of just answering, plus real-time matchmaking and sync for live Math Duels between students.

SwiftUI LLM-backed AI tutor Real-time multiplayer

Explore Project

More Apps

The rest of the portfolio

Card Value

Sports

AI-powered trading card scanner and valuation tool for sports card collectors.

Book Buddy

Books

Mood-based book discovery with trending bestsellers and personalized recommendations.

TCG Scanner

Sports

Multi-game trading card scanner with real-time pricing across Pokemon, Magic, and Yu-Gi-Oh.

City Search-Navi

Travel

Local destination explorer with interactive maps and curated city guides.

Stamp Expert Pro

Utilities

Stamp scanner and valuation tool for collectors using image recognition.

Writing

Thoughts on technology

Short posts on SwiftUI, indie app development, and building products end-to-end.

About

Background

I spent nearly a decade building mobile SDKs and products at Microsoft, Branch Metrics, and AppNexus before going through Y Combinator.

Now I run Pomona App Studio, where I design, build, and ship native iOS apps end-to-end — from concept through App Store launch. Every app is built with SwiftUI, backed by real infrastructure, and increasingly powered by AI — from LLM-generated intelligence briefs and tutoring to on-device computer vision.

10+

Years iOS experience

Shipped apps

Graduate

Published articles

Previously at

Y Combinator Microsoft Branch Metrics AppNexus

Capabilities

What I build with

Mobile

Swift SwiftUI Kotlin Jetpack Compose

LangChain AI agents RAG pipelines LLM-generated content AI tutoring Vision framework Core ML

Backend & Infrastructure

Firebase Cloud Functions REST APIs Push notifications

Product Engineering

MVVM architecture Offline-first Spaced repetition systems App Store distribution

Contact

Get in touch

Open to collaborations, consulting, and interesting conversations.

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