James Kirwin
Founder, SPQR Developers, LLC
New to Contra
James is ready for their next project!
GrowZone — Native iOS Gardening Assistant
GrowZone is a native iOS gardening application designed to help users choose plants suited to their specific growing conditions and maintain a record of their garden over time.
I designed and developed the application in Swift and SwiftUI, combining location-aware environmental data with a curated plant database. GrowZone uses factors including USDA hardiness zone, sun exposure, soil type, and elevation to provide more relevant plant recommendations rather than presenting users with a generic plant catalog.
The app includes a searchable database of more than 500 plants, detailed growing requirements and care information, location-based weather and seasonal gardening guidance, and filtering tools for matching plants to individual garden conditions.
Users can also build a personal garden, save plants, record dated journal entries, attach photographs, and document growth and changes over time. Garden data can be synchronized through iCloud for continuity across Apple devices.
Key development work included location and environmental-data integration, multi-criteria recommendation and filtering logic, structured plant data, persistent user-created garden records, photo management, iCloud synchronization, and a responsive SwiftUI interface.
Technologies: Swift, SwiftUI, iOS, iCloud/CloudKit, Core Location, Weather Data, Local Data Persistence
Platform: iPhone and iPad
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MotorVault — Native iOS Classic Vehicle Archive
Designed and developed a native SwiftUI application for classic and enthusiast vehicle owners to maintain detailed records of their vehicles, including specifications, photographs, maintenance, service history, valuation, and ownership information.
MotorVault combines structured vehicle records with maintenance tracking and historical data in a clean, locally stored archive designed for long-term ownership.
I handled the project end-to-end, including product design, UI/UX, SwiftUI development, data architecture, testing, in-app purchases, and App Store release.
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Penfolio — Native iOS Fountain Pen Collection App
Designed and developed a comprehensive SwiftUI application for fountain pen collectors to catalog pens, inks, writing samples, maintenance history, wish lists, values, and daily carry selections.
Penfolio combines detailed collection records with maintenance tracking, image management, comparison tools, search and filtering, persistent local storage, and iCloud synchronization.
I handled the project end-to-end, including product design, UI/UX, SwiftUI development, data architecture, testing, in-app purchases, and App Store release.
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PraxisVault — Native iOS Credential Management App
Designed and developed a complete SwiftUI application for physicians, nurse practitioners, and physician assistants to manage professional credentials, CME, licenses, certifications, and renewal dates.
Built with native Apple technologies, PraxisVault includes secure local data management, expiration tracking, local notifications, document attachments, iCloud synchronization, and professional PDF/ZIP credentialing exports.
I handled the project end-to-end, including product design, UI/UX, SwiftUI development, data architecture, testing, in-app purchases, and App Store release.
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