An independent iOS studio building privacy-first apps.

JC Mobile App Studio LLC is a small, independent software studio that designs and publishes apps for iPhone and iPad. The studio is run by a working HR generalist who started building apps to solve everyday problems that off-the-shelf software handled badly, a pay stub that was hard to read, a subscription that renewed unnoticed, a sleep schedule that no mainstream app understood. Every app since has followed the same idea: useful, honest software that respects the person using it.

What we believe

Every app from the studio follows one playbook: native SwiftUI, on-device AI where it genuinely helps, bilingual in English and Spanish from day one, and no tracking, ever. Wherever possible, your data stays on your device or in your own private iCloud, never on a server we control. We do not run analytics inside the apps, we do not use advertising SDKs, and we do not sell data. When an app does send anything off the device, its app-specific privacy policy says exactly what, when, and to whom.

What we build

The lineup spans productivity, finance, weather, health, pet care, workers' rights, and focus tools. A few of the apps currently live on the App Store:

• DayCast, an encrypted planner, notes, journal, PDF editor, spending, and net worth tracker, six apps in one.
• VeraCast, an on-device AI weather app with radar and severe-weather alerts.
• VitalLedger, a private health and records ledger for every pet in the household.
• Holdwise, a calm, private dividend tracker for buy-and-hold investors.
• Plantilla, a workers' rights, pay, and benefits companion that speaks ten languages.
• Steady, a sleep, fatigue, and recovery app built for shift workers.
• Kynd, a no-shame focus app designed for ADHD brains.
• Libreto, a full drawing studio, planner, notebook, and PDF editor for Apple Pencil.

You can browse the full lineup, including apps in review and in development, on the home page, and read the studio's writing on tech, privacy, investing, and workers' rights on the blog. There are 8 apps live on the App Store and 1 in review.

The website

This website, jcmobileappstudio.com, is the studio's home: app listings, a weekly newsletter, and a regularly updated blog. The site is supported in part by advertising. How advertising and cookies work here is explained in our Privacy Policy.

Get in touch

Questions, app ideas, bug reports, or partnership inquiries are always welcome at contact@jcmobileappstudio.com, or through the contact page. Support is available in English and Español.