Mobile App Studio

We build mobile apps people love to use every day

TheZun Studio designs, builds and publishes its own iOS and Android apps. No client work — just products we believe in, crafted with care.

Explore our apps How we build
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Available on

App StoreGoogle PlayiPadApple WatchWear OS
Our Products

Apps we've built and shipped

Every app is designed, developed and maintained in-house by the TheZun team.

Productivity

Zun Focus

Pomodoro timer & distraction-free task planner
Health

Zun Habits

Build daily habits with streaks and gentle reminders
Finance

Zun Wallet

Simple expense tracking with smart budgets
Utilities

Zun Scan

Document scanner with OCR and PDF export
Lifestyle

Zun Journal

Private, encrypted daily journaling with mood tracking
Education

Zun Words

Learn vocabulary with spaced repetition
What we care about

Principles behind every app we ship

We're a small team making a few things really well, not many things half-done.

Native first

Built with Swift and Kotlin so every app feels at home on its platform — fast, fluid and battery-friendly.

  • SwiftUI & Jetpack Compose
  • Widgets, Live Activities, watch apps
  • Day-one support for new OS releases

Privacy by design

Your data belongs to you. We collect the minimum, store it on-device where possible, and never sell it.

  • No ads, no tracking SDKs
  • On-device processing & iCloud sync
  • Clear, honest privacy policy

Thoughtful design

Simple interfaces that get out of your way. Every screen is refined until it feels obvious.

  • Accessibility & Dynamic Type
  • Dark mode everywhere
  • Delightful, purposeful motion

Long-term support

We maintain our apps for years, not months. Regular updates, quick bug fixes and real human support.

  • Frequent feature updates
  • Support replies within 48 hours
  • Public changelog

Fair pricing

Free to try, with a simple one-time purchase or subscription. No dark patterns, cancel anytime.

  • Generous free tier
  • Family Sharing supported
  • Transparent pricing

Built with our users

Feature requests, beta programs and feedback shape our roadmap. The best ideas come from the people using the apps.

  • Public roadmap
  • TestFlight & Play beta programs
  • Community feedback board
How we build

From a real problem to the App Store

Small team, tight loops, and a bias for shipping.

01

Find a real problem

Every app starts with something we, or our users, genuinely struggle with day to day.

02

Prototype fast

We sketch, prototype and test with a small group before committing to a full build.

03

Craft & ship

Native code, obsessive polish and a public beta — then we launch on both stores.

04

Listen & improve

Reviews, feedback and usage data guide a steady stream of updates for years.

Technology

The stack behind our apps

Swift SwiftUI Kotlin Jetpack Compose Core Data CloudKit Room Firebase StoreKit 2 Play Billing Figma Fastlane GitHub Actions TestFlight
Reviews

What our users say

Real reviews from the App Store and Google Play.

★★★★★

"Zun Focus is the first timer app I've actually stuck with. Beautiful, simple and no nagging notifications."

Emily M.
Emily M.App Store review — Zun Focus
★★★★★

"Finally a habit tracker that doesn't try to sell me a subscription every time I open it. Love the widgets."

Jonas K.
Jonas K.Google Play review — Zun Habits
★★★★★

"The developer replied to my feature request in a day and shipped it the next update. That never happens."

Priya T.
Priya T.App Store review — Zun Journal
Get in touch

Questions, feedback or ideas?

We read every message. Reach out for support, feature requests, press enquiries or partnership ideas.

  • hello@thezun.net
  • support@thezun.net
  • Ho Chi Minh City, Vietnam