Mobile App Development Studio for iOS & Android

Mark Studios is a mobile app development studio for iOS and Android. We take your app from mobile strategy and MVP scope through UX/UI design, a native or cross-platform build, testing on real devices, and App Store and Google Play launch, and you work directly with Mark Santos from the first brief to the code handoff.

Updated

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  • 4.9 average rating
  • 8,000+ orders
Illustration of Mark Studios building a mobile app — from MVP to App Store launch
What's included

What's included in Mark Studios app development?

Native iOS & Android apps
Cross-platform builds for both stores
UX/UI design built for your users
Backend, APIs & integrations
App Store & Google Play launch
Push notifications & analytics
Performance & offline support
Maintenance, updates & support
Mobile strategy

What does mobile strategy decide before development starts?

Three things: whether you need an app at all, how to build it, and what the first version must do. Mobile strategy keeps the budget on the features your users will actually open. We settle it in discovery, before a single screen is designed, so the quote you approve matches the app you meant to build.

App, cross-platform build or mobile website?

An app earns its place when people will open it every day, when it needs push notifications, offline use or device hardware such as the camera and location, or when the App Store and Google Play are where your buyers look. If the job is to be found in search and convert a visitor once, a fast mobile website usually does it for less, and that is what our web design and development work covers. Our guide to building a video website and app ecosystem walks through the order for creators: site first, app once an owned audience is asking for one.

We recommend one approach in your quote, with the reasoning, before any design starts.
ApproachHow it's builtBest forTrade-off
Native iOS and AndroidTwo codebases, one per platform (Swift for iOS, Kotlin for Android)Apps that lean on device hardware, heavy animation or the newest OS featuresTwo builds to maintain, so every update costs more
Cross-platformOne shared codebase that ships to both storesMost MVPs and business apps that need iOS and Android at launchSome platform-specific features still need native code
Mobile web appA responsive site or progressive web app that runs in the browserSearch-led products and simple tools that don't need a store listingNo App Store or Google Play presence, and less access to device features

What goes in the first version?

One core flow done well, plus the plumbing every app needs: sign-in, analytics, crash reporting and the push notifications that bring people back. Everything else goes on a version-two list, ranked by what real users ask for after launch. A tight first version reaches the stores sooner and gives you usage data to steer the next build instead of guesses.

Store review and launch

Both stores review every app before it goes live, against Apple's App Store Review Guidelines and Google Play's Developer Program Policy, so we build to those rules from the first screen rather than discovering them at submission. Apple says App Review typically clears 50% of submissions in under 24 hours and 90% in under 48 (checked October 6, 2026). The store listing is a launch asset too: Apple allows up to three app previews per language, each up to 30 seconds, and because video is our core work we cut those previews and the launch ads in-house. Our video advertising statistics cover the spend, formats and reach behind those ads.

Software you can open today

What we've shipped is live on our websites and apps page: native macOS apps written in Swift, the same language as native iOS, such as Ghostmark and MenuBarStats, and production web apps like ArtificialWatch, a subscription service that checks every major AI provider's API on a 60-second cycle and alerts subscribers by email and browser push, with SMS and phone calls on paid plans. If your app needs an assistant inside it, our AI agents and chatbots plug in. Tell us what the app should do and get a quote.

The process

How does end-to-end app design and development work?

1 Step 01

Discovery & scope

~24h · Async

We map goals, users, core features, and platforms so the build is scoped before design starts.

2 Step 02

Quote & plan

~10 min · Fixed scope

We confirm scope and send a flat quote with milestones. Approve and pay securely on the platform.

3 Step 03

Design

Wireframes → UI

We design wireframes, then high-fidelity screens and a clickable prototype for sign-off.

4 Step 04

Revisions

Review rounds · Async

We round-trip feedback in our review tool and iterate on the designs and build until every screen and flow lands.

5 Step 05

Build & launch

Dev · QA · Store submission

We develop, test on real devices, and submit to the App Store and Google Play — plus full source and account handoff.

10,000+Projects delivered
4,500+Reviews
99%On-time delivery
“He's become so much more than just a video editor. He's developed websites for me, developed logos for me. He's helped me with my Google ads. … He's got excellent customer service. He's communicative. He's timely.”
Robert Freitas, LCSW · Therapy Services Morgan Hill
FAQ

Frequently asked questions

Yes. We build native iOS and Android apps as well as cross-platform builds that ship to both stores from one codebase — we recommend the right approach for your budget and timeline.

Yes. We handle the full lifecycle: discovery and scoping, UX/UI design, development, QA, and submission to the App Store and Google Play.

Yes. On final payment you own the app, the source code, and all store and service accounts — we hand everything off.

Optional monthly care plans cover OS updates, bug fixes, new features, and monitoring after launch.

Every app is quoted after we scope it, as a flat fee with milestones rather than hourly billing. The price depends on the platforms (iOS, Android or both), whether the build is native or cross-platform, how many screens and user flows the first version needs, and the backend and integrations behind it. Share the app idea and its must-have features, and you get a fixed quote before any work starts.

Yes. Video is Mark Studios' core work, with 10,000+ projects delivered, so the app previews and launch ads are made in the same place as the app. Apple allows up to three app previews per language on an App Store product page, each up to 30 seconds long, and we cut them to those specs alongside the ads that send people to the listing.

Start your app project

Tell us about the app you want to build. We'll scope it and quote it — usually within 1 business day.

Prefer to talk first? Book a free 15-minute call with Mark.

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