Riley Testut
Founder at AltStore
Dallas, Texas, United States
Summary
🤩
Rockstar🎓
Top SchoolRiley Testut is a founder and veteran iOS engineer with 14 years of experience building apps and alternative distribution tooling for non-jailbroken devices. Best known for creating AltStore and the Delta emulator, he combines deep UIKit/Swift expertise with SwiftUI and programmatic UI work to ship polished UX, theming, and data-model improvements. He started independently shipping emulators like GBA4iOS over a decade ago and continues to iterate on projects that push iOS capabilities without jailbreaking. Based in Dallas, he blends product-focused engineering with open-source stewardship, routinely tackling UI, Core Data, and architecture-level refactors across highly visible repos. A telltale detail: he’s as comfortable implementing custom view controllers and theming extensions as designing alternative app-distribution infrastructure.
14 years of coding experience
10 years of employment as a software developer
Bachelor's degree, Computer Science, Sophomore, Bachelor's degree, Computer Science, Sophomore at University of Southern CaliforniaRichardson High School
Stackoverflow
441reputation
49kreached
4answers
18questions
Github Skills (14)
swift10
coredata10
swiftui-app10
ios10
user-interface10
emulation10
swiftui10
ui-design9
front-end-development9
uid9
coreimage6
appstoreconnect6
static-linking6
objective-c4
Programming languages (9)
Github contributions (5)
altstoreio/AltStore
May 2019 - Jan 2023
AltStore is an alternative app store for non-jailbroken iOS devices.
Role in this project:
iOS Mobile Developer
iOS Mobile DeveloperContributions:8 reviews, 1149 commits, 39 PRs in 3 years 9 months
Contributions summary:Riley was responsible for implementing various UI components and views for the iOS app, specifically focusing on the creation of the AppsViewController and AppDetailViewController. They built table view cells, image views, buttons, and the overall structure of the views using SwiftUI or programmatic UI elements. The user's work included integrating with the Roxas framework for data sources, and adding styling through theming with the creation of an UIColor+AltStore extension.
backportjailbrokenapp-storealtstoreswift
rileytestut/Delta
Apr 2015 - Nov 2022
Delta is an all-in-one classic video game emulator for non-jailbroken iOS devices.
Role in this project:Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:12 releases, 15 reviews, 657 commits in 7 years 7 months
Contributions summary:Riley primarily focused on developing features for the iOS-based classic video game emulator, Delta. Their contributions included updating the app's core architecture to use dynamic subclassing and Swift 2 syntax. They implemented a new emulation view controller to display controller UI, added functionality to handle input from connected controllers and enabled the functionality to save and load states for the games.
gameboydeltagame-boyemulatorjailbroken
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