Senior engineers, no junior AI.
Every line in your codebase is written by an engineer who has shipped to App Store and Play Store more than once. We don't learn on your project.
★ Mobile Lab · iOS + AndroidLab open — 2 slots Q35 stacks · one teamFull source at handoff
MOBILE APP STUDIO · EST. 2024Ship mobile apps you can maintain.
Senior engineers, app-store hardened, full source ownership at handoff. Flutter, React Native, Expo, Swift, or Kotlin — we pick the right tool for the job, then hand you a codebase your team can extend. Eight weeks from concept to live in the store.
Cycle
8 weeks · MVP to store
Stack
Yours · we pick the right tool
Output
App + source + runbook
Warranty
90 days post-handoff
[WHY KENSINK · 03 PILLARS]Three things hold the
Three things hold the
mobile lab up.
We do three things, and we are honest about what they are. Pick a lab that delivers the one closest to your blocker.
App-store hardened.
We've been through hundreds of submissions across iOS and Android review. We know what gets rejected, what the screenshots need to say, and how to ship to both stores on the same day.
Maintainable by your team.
What we hand off is what your team will extend. Documented architecture, typed surfaces, no clever indirection. The codebase reads like a manual.
★ AGENTHOST · BY KENSINK LABS · STUDIO PRODUCTYour 24/7
Your 24/7
developer-AI.
Self-service monitoring, triage, and PR drafting. Looking after your apps while humans sleep.
Built into every Kensink mobile build. Agenthost watches the production app, takes the easy work off your engineers’ plates, and escalates only the incidents that actually need a human at 3 a.m.
WHAT AGENTHOST DOES
- 0124/7 crash + performance monitoring on iOS and Android.
- 02Auto-triage incoming incidents against severity rules you set.
- 03Drafts PRs against your codebase for low-risk fixes — your engineers review and merge.
- 04Pages humans only when a human is actually needed. No alert fatigue.
[FIVE STACKS · ONE TEAM]Pick the right tool.
Pick the right tool.
We’ll bring the team.
Every stack below is the right answer for some products and the wrong one for others. We’ve shipped to all five — that’s how we know when to recommend which.
STACK · 01 / 05Dart
Flutter
Best for
Cross-platform products where design is the differentiator.
We ship
- One codebase, native-compiled performance on iOS + Android
- Riverpod or Bloc state, Dio HTTP, GoRouter navigation
- Theming system that mirrors your design tokens 1:1
- Firebase Crashlytics + Sentry for production observability
DartFlutterFirebaseRiverpod
STACK · 02 / 05TypeScript
React Native
Best for
Web teams going mobile — share TypeScript across the stack.
We ship
- Strict TypeScript, no `any` in your handoff
- Reanimated 3 for 60fps gesture-driven UI
- React Navigation typed routes, deep links, modal stacks
- Native module bridge when you need iOS/Android-specific work
TypeScriptReact NativeReanimatedNavigation
STACK · 03 / 05TypeScript
Expo
Best for
Fastest MVP iteration. Over-the-air updates without a store review.
We ship
- Expo SDK 50+ with managed workflow
- EAS Build pipeline → both stores in one command
- OTA updates for non-native changes — ship fixes in hours, not days
- Expo Router file-based navigation, typed end-to-end
TypeScriptExpoEAS BuildExpo Router
STACK · 04 / 05iOS native
Swift
Best for
iOS-first markets, premium UX, deep integration with Apple silicon.
We ship
- SwiftUI + UIKit interop where it makes sense
- Swift Concurrency (async/await + actors) for safe data flow
- ARKit, HealthKit, Core ML, Vision — Apple frameworks done right
- Modular feature architecture — each screen is its own Swift package
SwiftSwiftUICombineCore Data
STACK · 05 / 05Android native
Kotlin
Best for
Android-first markets (BD, India, MENA), tight hardware integration, Material You.
We ship
- Jetpack Compose for declarative UI
- Coroutines + Flow for structured concurrency
- Hilt for dependency injection at scale
- Room persistence with type-safe migrations
KotlinComposeCoroutinesRoom
[WHAT WE BUILD · FOUR SHAPES]Four shapes of
Four shapes of
mobile engagement.
Every mobile project sits in one of four shapes. The fastest way to scope is to tell us which one you’re in.
01 · MVP · 8 WEEKS
From idea to App Store in eight weeks.
You have a product hypothesis. We have eight weeks. By week 8 you have a real app in real stores with a real install button. Eval suite for the AI pieces if there are any.
Best fit: founders raising on traction, not on slides.
02 · CONSUMER · MASS-MARKET
Consumer apps that survive App Store review.
Onboarding flows that activate, push notifications that don't get muted, in-app purchases that don't get rejected, deep links that actually deep-link. We've shipped consumer apps to multi-million-user audiences.
Best fit: B2C products where store ratings move revenue.
03 · B2B · FIELD + SALES
B2B mobile that field teams won't abandon.
Field-service apps, sales-enablement, internal operations. Offline-first because warehouses + trucks + customer sites don't have wifi. Sync conflicts handled at the data layer, not in the support queue.
Best fit: SaaS extending into mobile-first field workflows.
04 · INTERNAL · EMPLOYEE
Employee apps that don't need an IT ticket.
Side-loaded enterprise builds, MDM-distributed, SSO-integrated. Single sign-on against your IdP (Okta, Azure AD, Google Workspace). Auto-update channel separate from public store releases.
Best fit: enterprises with 100+ field employees on company devices.
[PROCESS · EIGHT WEEKS]Four phases, eight weeks,
Four phases, eight weeks,
one live app.
The eight-week timeline is non-negotiable for MVPs. Bigger engagements run the same shape with more iteration in build.
WK 01–0201 / 04
DISCOVERY
Product brief, signed off.
Two-week scope sprint. Stakeholder interviews, user-research recap, stack decision, scope cuts, eval framework if AI is in the build.
Signed brief · cost band · timeline
WK 0302 / 04
DESIGN
UX flow + design system.
Wireframes for the critical-path screens, a design system you own, and clickable prototypes that we test on actual devices before code touches them.
Figma file · device-tested prototype
WK 04–0703 / 04
BUILD
Weekly demos, shipping the whole time.
Every Friday a working build lands on TestFlight + internal Android track. We don't build in the dark — you see the app come together week by week.
TestFlight + internal-track builds, weekly
WK 0804 / 04
SHIP
Store submission + handoff.
App Store + Play Store submission with the metadata we know works. Full source repo transferred. Architecture runbook + 90-day post-launch warranty included.
Live in both stores · source + runbook handed over
BY THE NUMBERSApps in stores.
Apps in stores.
Numbers we can show.
Updated quarterly across the apps we’ve shipped that publish their numbers. Self-reported by client teams.
TO APP STORE + PLAY STORE ACROSS THE LAB'S HISTORY
12+ apps shipped
to App Store + Play Store across the lab's history.
ACROSS THE APPS WE'VE SHIPPED THAT PUBLISH THEIR NUMBERS
4.7★ avg rating
across the apps we've shipped that publish their numbers.
FROM KICKOFF TO INSTALL BUTTON — ONCE A QUARTER WE HIT 6
8wk · MVP to live
from kickoff to install button — once a quarter we hit 6.
EVERY ENGAGEMENT ENDS WITH FULL SOURCE HANDOVER
0retainers held
every engagement ends with full source handover. You own everything.
START YOUR OWN PROJECTBring a real product.
Bring a real product.
We’ll bring code on day one.
Eight weeks from concept to install button. Source handed over. 90-day warranty after launch. Two slots open this quarter.