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Going iOS-first makes sense when your users skew Apple, when iPhone-specific features matter (Apple Pay, HealthKit, ARKit, CoreML for on-device ML, App Clips), or when App Store discoverability is part of your acquisition strategy. For most consumer apps and many B2B apps, iOS-first means you ship faster, validate cleaner, and then add Android once the core product works.
We build in Swift and SwiftUI for new projects, with UIKit support for older codebases and complex custom UI that SwiftUI doesn’t yet handle well. For projects that need both iOS and Android, we evaluate native versus cross-platform (React Native, Flutter) based on the actual feature set, not on framework fashion. Sometimes native is clearly the right answer, sometimes cross-platform is, and we’re not religious about either.
Apple’s review process is detail-driven: privacy manifest, permissions usage descriptions, metadata accuracy, screenshot guidelines, in-app purchase implementation, third-party SDK disclosures. We build with the guidelines in mind from the architecture phase, test on real devices, and submit with complete metadata. Most apps clear review without major issues. Where they don’t, the rejection feedback is specific enough to fix and resubmit within a few days.
iOS users notice frame drops, stutter on scroll, and slow image loading more than web users do. Native iOS development with SwiftUI handles most of the performance work automatically (diffing, view recycling, memory management), but performance-critical paths still need profiling. We use Instruments for CPU and memory profiling, optimise image loading with async pipelines, and test on real devices including older models to catch performance issues that simulators miss.
Most iOS app projects start with a feature list that’s 2-3x larger than what’s needed for first launch. Half of those features get cut before the App Store submission once real testing reveals which ones actually matter. We work in two-week sprints with weekly demos, prioritise the core flow that proves the product hypothesis, and ship the smallest defensible version that real users can react to. Additional features get added after launch based on actual user behaviour rather than pre-launch speculation.
Every project runs in two-week sprints with weekly demos. The six steps below describe what happens in each phase. Project length depends on scope, integrations, and how clean the existing brand and API setup is.
01
We map the product goal, the user pain you’re solving, the technical constraints (existing API or backend, third-party services, App Store category, target devices), and the budget reality. The output is a backlog prioritised by impact-versus-effort, with the first sprint scoped concretely enough to start.
02
UX flows mapped first, then wireframes for the core paths, then high-fidelity designs in Figma. We design native iOS components (SF Symbols, Apple’s Human Interface Guidelines patterns) rather than fighting the platform with custom components that don’t feel native. Prototype the critical flows in Figma or as a TestFlight build before serious development begins.
03
Two-week sprints, daily commits, weekly demos. Swift and SwiftUI for new code, UIKit when the project needs custom UI that SwiftUI doesn’t handle well or when integrating with an older codebase. Code review on every merge, unit tests on the critical business logic, integration tests on API interactions. Architecture decisions documented before they get implemented.
04
TestFlight builds for internal QA after each sprint, then external testing with a small group of real users before public submission. Automated tests run on every commit through CI (GitHub Actions, Bitrise, or Xcode Cloud depending on the project). Crash reporting via Firebase Crashlytics or App Store Connect, with alerts on regression spikes. Performance profiling on older devices to catch issues that high-end test devices miss.
05
App Store assets prepared: icons in required sizes, screenshots that match Apple’s current device requirements, app preview videos where they help conversion, metadata in all the languages you’re targeting. Submission via App Store Connect. Most apps clear review within a few days. After launch, monitoring on key metrics (crash-free sessions, retention, conversion on in-app purchases or subscriptions, App Store rating trends).
06
Post-launch development continues on a planned cadence rather than ad-hoc. Monthly or two-weekly sprints depending on the scope of ongoing work. Iteration based on actual user behaviour from the analytics setup (Firebase, Mixpanel, App Store Connect) rather than guesses. New features prioritised by impact on the metrics that matter for your business.
We’ve been building and maintaining digital products long enough to know what breaks, what scales, and what “urgent” actually means.
Studio Ubique has been building digital products since 2012, with iOS apps in the mix for clients in fitness, logistics, retail, sports betting and B2B SaaS. We’re not the agency that takes on every iOS project that comes through the door, we work where the product hypothesis is clear enough to build the right MVP and where the budget matches the realistic scope. From discovery call to App Store submission is usually 10 to 16 weeks for a standard app, longer for platforms with complex backends.
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Native iOS in Swift and SwiftUI fits best when iOS-specific platform integration matters (Apple Pay, HealthKit, ARKit, CoreML for on-device machine learning, App Clips, widgets), when performance-critical workloads can’t tolerate the cross-platform abstraction overhead, or when App Store discoverability is part of your acquisition strategy and a polished native feel directly affects conversion. Native is also the right answer when you’re shipping iOS-first and Android is genuinely “later”, not “next sprint”.
Cross-platform (React Native or Flutter) makes sense when you need both iOS and Android to ship roughly simultaneously, when most of the app is standard CRUD or content display without heavy platform integration, when your team’s existing JavaScript or Dart expertise speeds up onboarding, or when the budget reality means you can’t afford two separate native codebases. The honest answer for many projects is that either works, and the deciding factor is your team and your roadmap rather than pure technical superiority. We work in both, and we pick based on the project rather than the framework we feel like writing this month.
Three main shapes. First, consumer apps with App Store distribution: fitness tracking, content subscription, sports betting, retail and eCommerce companion apps. Second, B2B SaaS companion apps: field service apps for engineers visiting client sites, admin tools for managers on the move, dashboards for executives who do their reading on iPad. Third, internal enterprise apps distributed via MDM or Apple Business Manager rather than the App Store, often for logistics, healthcare, or industrial use cases.
What we don’t build as standard service offerings: AAA mobile games (we’re not a game studio), apps requiring specialised hardware integration we can’t test against (medical devices that need FDA clearance, automotive integrations beyond CarPlay), and apps that need a research-grade ML pipeline we can’t realistically support. For augmented reality work we’re happy to build with ARKit on standard use cases, but complex AR experiences with custom 3D pipelines may need a specialist partner. We’d rather scope honestly than take a project that’s a stretch.
For a standard iOS app with a single backend integration (your existing API or a backend we build alongside), 10 to 16 weeks from start to App Store submission is typical. Complex apps with multiple integrations, custom data sync, offline support, in-app purchases or subscriptions can take 4 to 8 months. The variables that move timelines most: how clean the design and brand work is when development starts, how many third-party SDKs need integration, and how complex the backend work is alongside the iOS work.
For genuine MVP launches with a narrow feature scope and an existing backend to integrate with, faster timelines are possible (6 to 10 weeks for a focused MVP). What’s not realistic for most real client work: launching a full-featured iOS app in 30 days. That timeline only fits one-screen utilities or prototypes for internal demo rather than App Store launch. We scope honestly during discovery rather than committing to launch dates that won’t survive contact with reality.
App Store review is detail-driven rather than mysterious. Apple’s main rejection categories: privacy manifest issues (missing usage descriptions for permissions, third-party SDK disclosures), incomplete or misleading metadata (screenshots that don’t match the app, descriptions that overpromise), unfinished functionality (crashes, broken flows, dummy content), in-app purchase implementation problems, and content policy violations (sensitive content without proper age gates, regulated industries without proper disclosures). We build with the guidelines in mind from the start, test on real devices, and submit with complete metadata.
Most apps clear review within a few days. Where they don’t, the rejection feedback is specific enough to fix and resubmit. Median resubmission cycle is 2-4 working days. For apps in regulated categories (financial services, health, dating, sports betting), the first submission often needs an extra review round with specific compliance documentation, and we budget for that in the timeline. We don’t promise “first-pass approval” because that’s not always within engineering control, but we do design the submission to minimise the common rejection paths.
iOS apps need more ongoing attention than websites do because Apple updates iOS itself, the Xcode toolchain, and the App Store requirements regularly. Every major iOS release (annual, usually September) brings deprecated APIs and new requirements. SDK updates from third-party providers happen throughout the year. App Store policy changes can require app updates even when nothing in your business has changed.
We offer ongoing maintenance through two paths. The technical maintenance plan for mobile apps is €39 per month (monthly updates) or €59 per month (weekly updates), covering API and security patch updates, SDK updates, app-store compliance checks, and version rollback capability. For ongoing development and support hours beyond just maintenance, our Care, Growth and Partnership packages add monthly hours at €60 per hour. Care starts at €240 per month for 4 hours with 24 working-hour response. For teams shipping continuously, a dedicated-developer arrangement (40 to 160 hours per month) treats the app as a living product rather than a delivered artefact.
Our hourly rate is €60-€65 across all roles (iOS engineering, UX/UI design, project management, QA), with our team split between Zwolle and Chandigarh. Focused iOS apps with a clean scope and an existing backend to integrate with typically run €15,000 to €30,000. Apps with custom backend development alongside the iOS work, complex integrations (payments, third-party services, custom data sync), and platform features like in-app purchases or subscriptions run €30,000 to €80,000.
The biggest scope variables are the backend work (if you don’t have an existing API, we build one alongside the iOS work), integration count and quality (clean modern APIs are fast, older or custom backends take significantly longer), and whether the app needs in-app purchases or subscriptions (which add compliance and testing work). Multi-language and multi-region apps sit at the higher end because content management, currency handling and regional App Store metadata add work. Schedule a discovery call to walk through what you actually need before any number gets put on paper.
Both, depending on what you need. If you have an existing backend (REST API, GraphQL, Firebase, AWS Amplify, custom server), we integrate against it. If you don’t, we build one alongside the iOS work in Laravel, Node.js, Django, or serverless (AWS Lambda, Firebase Functions) depending on what fits the workload. For most consumer apps a managed BaaS (Firebase, Supabase, AWS Amplify) keeps backend cost predictable. For B2B apps with complex business logic, custom backend development usually pays off.
The backend work is a separate scope item in the proposal because the cost varies significantly. A focused REST API for an iOS app typically runs €10,000 to €30,000 on top of the iOS development cost. For more on backend options, see our backend development service. We try to scope the full picture in discovery rather than starting on iOS and discovering later that the backend work doubles the project budget.
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