Build mobile experiences users love.
We design and develop premium iOS, Android, Flutter and React Native apps that combine exceptional user experiences with enterprise-grade performance, security and scalability.
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Flutter
React Native
A responsive website is not a mobile strategy
Apps unlock the entire device — notifications, biometrics, camera, GPS, offline — and the engagement model that drives daily habit.
- Limited device access
- No push notifications
- No offline mode
- Lower engagement
- No biometric auth
- No native gestures
- Push notifications
- Biometric login
- Offline access
- GPS + sensors
- Camera + LiDAR
- Native performance
- App store presence
- Background sync
Twenty mobile product families. One engineering bench.
From regulated FinTech to on-demand marketplaces and enterprise companion apps — we ship the whole stack: client, backend, admin, infra.
Banking, wallets, lending, brokerage, neobanks.
Telehealth, EHR, vitals, prescriptions, HIPAA.
Multi-vendor catalogs, checkout, escrow, reviews.
Restaurants, drivers, kitchens, dispatch, ETAs.
Riders, drivers, fleet ops, surge, payouts.
Field sales, pipeline, calls, notes, e-sign on the go.
Inventory, procurement, approvals, finance access.
Courses, micro-lessons, streaks, certificates.
Workouts, HRV, plans, coaches, wearables sync.
Listings, tours, mortgage, agent CRM, virtual tours.
Bookings, loyalty, room control, concierge.
Quotes, claims, photos, policy management.
Daily logs, safety, RFIs, photos, time tracking.
Itineraries, tickets, maps, offline city guides.
Feeds, DMs, communities, creator monetization.
Tasks, docs, calendars, automations, AI assistants.
Routing, scanning, proof of delivery, dispatch.
BLE, MQTT, device pairing, OTA, telemetry.
SSO, RBAC, audit, secure docs, internal tools.
Wearable, TV, vehicle and IoT companion surfaces.
The honest comparison — no religion
We ship all four. Here's the framework we use to pick the right one for your product.
iOS Android Flutter React NativeNine stages, end-to-end
A repeatable, transparent process — measured in shipping, not in slide decks.
Goals, users, constraints, success metrics, monetization model.
User interviews, competitive teardown, technical feasibility.
Information architecture, key flows, low-fi screens, content rules.
Hi-fi screens, motion specs, design tokens, accessibility audit.
Clickable Figma + animated InVision walkthroughs for stakeholders.
Native or cross-platform build, backend, web admin, CI/CD.
Unit, integration, snapshot, end-to-end, device farm, security.
Assets, copy, privacy, App Review, staged rollouts.
Monitoring, OS-update releases, sprint-cadence features, 24/7 ops.
Nine real surfaces, designed like consumer apps
A sample of the kinds of mobile UI we ship — every screen pixel-perfect, motion-aware, accessible and built for 60fps.
Twenty production-grade capabilities
The cross-cutting features every serious mobile app needs — engineered once, composed everywhere.
The reference stack we deploy
A clean, layered architecture — testable, observable, scalable from MVP to global rollout.
Authenticated session, device fingerprint, biometric.
iOS / Android / Flutter / RN with offline-first store.
TLS, rate limit, auth, schema validation, observability.
OAuth/OIDC, MFA, passkeys, JWT, refresh rotation.
Domain services, event bus, queues, state machines.
AWS / Azure / GCP, multi-region, autoscaling fleets.
Postgres + Redis cache + object storage.
Events, funnels, cohorts, segments, real-time.
LLMs, embeddings, vector DB, on-device CoreML / TFLite.
Plays nicely with your stack
Eighteen deep, native integrations on day one — plus a typed REST / GraphQL API for everything else.
The stack we choose, on purpose
Native where it matters, cross-platform where it earns its keep, cloud-native everywhere else.
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Security designed in, not bolted on
Mobile apps live on hostile devices, hostile networks and app stores that move fast. Our apps ship OWASP MASVS-aligned controls from sprint one — and we re-test them every release.
Face ID, Touch ID, BiometricPrompt, passkeys.
TOTP, push approval, hardware keys, WebAuthn.
AES-256 at rest, TLS 1.3 in transit, secure enclave keys.
Keychain / Keystore, encrypted SQLite, no plaintext PII.
Public-key pinning, MITM-resistant, rotateable.
Short-lived tokens, rotated refresh, audience-scoped.
Standards-based identity for users and machines.
Role + attribute-based access down to field level.
Immutable, exportable, queryable, SOC 2 evidence.
Encrypted local cache, key rotation, remote wipe.
Performance budgets, measured in production
Numbers we hold the build to — every release, on real devices, including the cheap ones.
Lumen · the neobank for cross-border freelancers
A multi-currency banking app — Swift + Kotlin + a Node backend — shipped from kickoff to App Store in 16 weeks.
Freelancers earning in 5+ currencies were losing 4–7% per transfer to retail banks. Lumen needed an app that felt as polished as Revolut but with first-class invoicing, tax pots and multi-rail payouts.
Native iOS (SwiftUI) and Android (Jetpack Compose) clients on a Node + Postgres backend, with Stripe Issuing, Wise rails, biometric onboarding, on-device document capture and an in-app AI bookkeeper.
- SwiftUI + Jetpack Compose · 92% test coverage
- Node services on AWS ECS, multi-region, p95 88ms
- Stripe Issuing + Wise + Plaid + Persona KYC
- On-device CoreML for receipt OCR · offline-safe
Ship it, then keep shipping
The work after the last sprint — submission, review, rollout, monitoring — is where most apps slip. We treat it as a first-class phase.
Pre-flighted against IAP, account deletion, privacy nutrition labels.
Data safety, permissions, target SDK, signing keys, in-app review.
TestFlight, internal/closed/open tracks, real-device farm sweep.
Cold launch, jank, memory, battery — measured against budgets.
Icons, screenshots, preview videos, ASO copy, localized listings.
Staged rollouts, phased percentage, App Review escalation paths.
Monthly OS-update releases, feature flags, kill switches.
Semver, deprecations, forced upgrade, multi-build pipelines.
Seven proven models — pick the one that compounds
Most apps lose money to the wrong model, not the wrong product. We help you pick — and re-pick — based on signal.
Monthly / annual, free trials, intro pricing, App Store / Play billing.
Free core, paid power features, plan-gated UX, conversion-led design.
Premium upfront pricing, paid upgrades, family sharing.
Commission / take-rate, escrow, payouts, seller onboarding.
Consumables, non-consumables, content packs, virtual currency.
Banner, interstitial, rewarded, native — AdMob / Meta / custom DSP.
Seat-based, volume, MSA contracts, custom security review.
Built for every user, every device
Accessibility isn't a Q4 ticket — it's a launch requirement. WCAG AA, dynamic type, RTL and real-user testing every release.
Color, contrast, focus, touch targets, gestures.
True dark surfaces, adaptive imagery, OLED-friendly.
RTL, plurals, ICU MessageFormat, locale-aware formats.
VoiceOver, TalkBack, dynamic type, semantic markup.
Dynamic Type, system font scale, line-height aware.
Manual audits, Accessibility Inspector, real-user testing.
One product, every surface
Modern apps live on phones, tablets, watches, desktops, TVs and the web — with a single, shared backend and identity layer.
iOS + Android, foldables, edge-to-edge.
iPad / Android tablet split-view, pen support.
watchOS, Wear OS, complications, haptics.
macOS, Windows, Linux companion clients.
tvOS, Android TV, Fire TV — leanback UX.
Responsive web app for cross-device continuity.
Day 1 is the start of the project, not the end
The product team doesn't disband at launch — we run analytics, experiments, releases and incident response with the same engineers who built v1.
Sessions, retention, funnels, cohorts, revenue attribution.
Sentry / Crashlytics, symbolicated stacks, alerting, SLAs.
Feature flags, holdouts, statistical rigor, blast radius control.
Trunk-based, weekly cadence, staged rollout, instant rollback.
Real-user monitoring, p95 budgets, regression-gated builds.
Lifecycle messaging, push segments, content programming.
A mobile engineering bench, not a body shop
Twelve reasons our mobile clients renew — and why most of our work comes from referrals.
Every feature mapped to a metric. No vanity work.
HIG / Material 3 fluency. Motion specs, design tokens, dark mode.
60fps budgets, p95 launch, profiled on the cheapest target device.
Multi-region, autoscaled, observable from day one.
Copilots, on-device vision, semantic search built into the product.
Bounded contexts, strict typing, hire-able codebase.
OWASP MASVS, SSO, audit, pen-tested every release.
Monthly OS-update releases, SLA-backed monitoring, owned roadmap.
Senior QA engineers, device farm, automated regression every PR.
Two-week sprints, weekly demos, transparent backlog and burndown.
US / EU / APAC follow-the-sun engineering and incident response.
Stacks we'd be happy to inherit in five years — picked deliberately.
The mobile playbook, written down
Six in-depth pieces our mobile team uses with every new engagement.
A five-stage validation playbook that costs less than $5k and saves $500k.
When each one wins, hidden costs, and the build issues nobody warns you about.
How to ship consumer-grade UX inside an enterprise security envelope.
A 90-item pre-flight that has cleared every App Review on the first attempt.
Where on-device, where cloud, what to cache, and how to keep the bill small.
Local-first stores, conflict resolution, queue replay and graceful degradation.
What product teams say after launch
Six clients across FinTech, healthcare, marketplaces, logistics and travel — sliding two at a time.
"EVSORA shipped both iOS and Android in 16 weeks — and not one App Review rejection. We've worked with five agencies. None of them came close."
"We replaced our React Native build with native Swift + Kotlin and our crash-free rate jumped from 96.4% to 99.92%. Worth every dollar."
Twenty mobile questions answered
If yours isn't here, we'll answer it on the discovery call.
Ready to build your next mobile app?
Bring us a Figma, a backlog, or a single sentence. We come back inside a week with a phased plan, a fixed-price pilot and named senior engineers.