Services / App Development
Design & Build

Apps that get used, not just downloaded.

We craft stunning, high-converting websites tailored to your brand. From slick modern layouts to seamless user experiences, our web design services are built to help your business stand out and grow online.

+167%Day-30 retention
4.8 / 5Avg. store rating
9:41
Digital Zenith mobile app engineering workspace
Production Studio Live
The Engineering Engine

Where beautiful interfaces drop their ego and meet stable, native performance.

We build mobile products that balance polished brand experience with absolute technical reliability. Every screen goes through our rigorous performance and crash-testing pipeline before reaching your users' devices.

99.8%

Crash-free sessions

< 1.5s

Cold start time
Our philosophy

Good apps disappear into habit. Bad apps get deleted in week one.

Most agency apps look great in the App Store screenshots and get uninstalled within days. We start from the opposite end — with the retention goal — and design backwards from there.

That means every onboarding flow, every push notification, every permission prompt is driven by one question: does this earn another open? If it doesn't, it doesn't make the cut.

Before vs After — Typical client audit
Day-30 RetentionBefore: 9% → After: 24%
Crash-Free SessionsBefore: 91% → After: 99.8%
App Store RatingBefore: 3.2 → After: 4.8
Cold Start TimeBefore: 4.1s → After: 1.3s
Onboarding CompletionBefore: 38% → After: 81%

Aggregated across 9 clients in 2024–25. Individual results vary by category, audience, and starting baseline.

What's included

Everything from first prototype to App Store — and beyond.

We don't hand off a Figma file and disappear. We build, ship, and then keep iterating with you until retention moves.

Product Strategy & Architecture

We map your user journeys and information architecture before we draw a single screen. Core flows, edge cases, and data model are agreed on paper first — so no expensive surprises in development.

User journeysFlow mapsData model

High-Fidelity UI Design

Pixel-perfect Figma mockups following both iOS Human Interface Guidelines and Material Design — adapted to your brand, not a generic template stretched over two platforms.

FigmaDesign systemHIG / Material

Native & Cross-Platform Build

Clean, well-tested code on the stack that fits your goals — Swift/Kotlin for native, or Flutter/React Native for shared codebases. We build for speed, stability, and easy maintenance.

SwiftKotlinFlutterReact Native

Analytics & Growth Experiments

We instrument every build with event tracking from day one and run structured experiments against your most impactful screens — onboarding, paywall, push opt-in.

MixpanelAmplitudeFirebase

Performance & Stability

Memory profiling, crash reporting, battery and network optimisation until your app runs smoothly on a five-year-old Android device, not just the newest iPhone.

CrashlyticsProfilingOffline support

App Store Launch & Support

We handle App Store and Google Play submission, ASO, and review cycles. Every project includes a 60-day support window, then flexible monthly retainers for ongoing iteration.

ASO60-day supportRetainers
How it works

From brief to live on both stores — exactly how we do it.

No black boxes. You know what's happening, who's doing it, and when you'll see it at every step of the project.

01

Discovery & Brief

A 90-minute kickoff where we interrogate your goals, audiences, competitors, and technical constraints. We also audit any existing app — what's working, what's churning users, and what the analytics say people actually do. Deliverable: a written project brief signed off by both sides.

Kickoff workshopCompetitor auditAnalytics reviewProject brief
02

UX & Wireframes

Low-fidelity wireframes for every key screen, with user flow diagrams showing how users navigate to their goal. We review these with you before any visual design starts — saving weeks of revision cycles down the line.

Flow diagramsLo-fi wireframesInformation architectureClickable prototype
03

Visual Design

High-fidelity Figma designs for iOS and Android, including a full component library. You get two rounds of feedback built in. Once designs are approved, no further scope creep — keeping your budget and timeline intact.

Figma mockupsComponent libraryDesign tokensBrand application
04

Development

We build with weekly TestFlight and Play Console internal builds from week one. Code is peer-reviewed, accessibility tested, and profiled for memory and battery use before it ever goes near a public release.

TestFlight buildsWeekly previewsAccessibility auditQA testing
05

Launch & Handoff

A structured go-live checklist: App Store and Google Play submission, crash monitoring setup, and a post-launch monitoring window. We're on call for 72 hours after launch. You get full documentation and a recorded walkthrough for your team.

Store submissionCrash monitoringASO setupHandoff docs
06

Iterate & Improve

The launch is not the finish line. We review retention and crash data at the 30-day and 60-day mark, propose experiments, and run staged rollouts. Most clients see their biggest retention gains in the first 90 days post-launch.

30/60-day reviewStaged rolloutsRetention roadmapOngoing retainer
Recent work

What it looks like when it works.

Two recent engagements — different categories, same approach. Start with the retention goal, build to last, iterate on the data.

Fintech · Native iOS & Android

Pennywise — Personal Finance App

Rebuilt a clunky hybrid app as native Swift and Kotlin. Redesigned onboarding, new budgeting flow, and biometric login. Launched in 14 weeks.

+184%Day-30 retention
4.9App Store rating
99.9%Crash-free
Health & Fitness · Flutter

Strideline — Run Coaching App

Cross-platform Flutter build to ship faster across iOS and Android with one codebase. Aggressive onboarding testing with funnel analytics. Subscription conversion doubled in eight weeks.

+112%Trial-to-paid rate
2.3×Sessions per user
8 wksTime to results

Tools we work with

We're platform-agnostic and will recommend the stack that makes sense for your team and timeline — not the one we're most comfortable with.

Swift / SwiftUI
Kotlin
Flutter
React Native
Figma
Firebase
Mixpanel
Amplitude
Crashlytics
Stripe
Client stories

From the people we've built for

They were the first studio that pushed back on our feature list and told us what users actually needed. The app launched in 12 weeks and our day-30 retention nearly tripled in the first quarter.
DK
Daniel Kessler
CEO, Pennywise
The stability work alone was worth it. We went from a 91% crash-free rate to 99.8%, and our App Store rating climbed from 3.2 to 4.9 within two months of the update shipping.
PN
Priya Nair
Head of Product, Strideline
Most studios deliver beautiful Figma files that don't survive contact with real devices. Digital Zenith's design and dev team are the same room — what you see in the mockup is what ships to the store. Zero compromise.
RV
Rohan Verma
Founder, OrbitFleet
Investment

Transparent pricing. No day-rate surprises.

Fixed-scope projects with clear deliverables. You know what you're getting and what it costs before we start.

MVP App
$9,800fixed

A focused single-platform app with core flows — ideal for validating an idea or launching a first version fast.

UX strategy & wireframes
iOS or Android, up to 8 screens
Backend & API integration
Analytics & crash reporting setup
30-day post-launch support
Get started
Custom / Enterprise
Let's talk

Bespoke engagements for complex builds — multi-app suites, hardware integrations, or ongoing product partnerships.

Scoped to your requirements
Dedicated design & dev team
Multi-app & multi-platform
Ongoing iteration retainer
Priority support SLA
Talk to us
FAQ

Questions we get asked a lot.

If your question isn't here, book a 30-minute call — no obligation, no pitch deck.

How long does a typical app build take?

An MVP on a single platform typically runs 8–10 weeks from kickoff to launch. A full cross-platform app runs 14–18 weeks. Timeline depends on how quickly you can provide feedback and content; projects stall most often on the client side during review rounds. We'll give you a detailed timeline in your proposal.

Should we build native or cross-platform?

It depends on your priorities. Native Swift/Kotlin gives the best performance and platform-specific feel, ideal for camera-heavy, AR, or performance-critical apps. Flutter or React Native lets you ship to both stores from one codebase, which is usually faster and cheaper to maintain. We'll recommend a path after the discovery call based on your features and budget.

Do you handle App Store and Google Play submission?

Yes. We manage developer account setup if needed, prepare all store assets and listing copy, handle the submission and review process, and respond to any review feedback from Apple or Google. We also set up basic App Store Optimisation (ASO) so your listing is discoverable from day one.

Will our team be able to maintain the app after launch?

Yes, maintainability is a design requirement for us. Every build includes a recorded code walkthrough, written documentation, and a clean repository with sensible structure. If you have an in-house team, we'll work directly with your engineers during the handoff period.

What happens after launch?

Every project includes a post-launch support window — 30 days on MVP projects, 60 days on full builds — for bug fixes and minor adjustments. After that, you can move to a monthly retainer for ongoing iteration, new features, and OS update compatibility. Most clients stay on retainer; the best retention gains come from continuous improvement after launch, not a one-time push.

Ready to build?

Let's find out what your app idea is worth.

Book a 30-minute call with one of our strategists. We'll audit your idea or existing app, identify the biggest retention risks, and tell you exactly what we'd do. No obligation.