Native-feel apps without the native-stack burnout
iOS and Android apps shipped through one codebase where it makes sense, native where it has to. We own the boring parts, auth, payments, push, store reviews, OTA, so your product team owns the product.
tengenx · mobile pipeline
LiveMobile delivery pipeline
Build · Test · Ship · Operate
Codebase
Auth & payments
Lifecycle
Observability
Cold start target
<2s
Crash-free
99.5%
OTA window
<48h
<48h
Typical OTA hotfix on live apps
1 codebase
iOS + Android shipped together
EAS / TestFlight
CI to staging + production
Where this fits
Built for the moments you can't postpone
We don't take work just to take work. This service exists because the problems below are the ones we keep being hired to solve, and the ones we've shipped through more than once.
- MVP needs to be in two app stores in a quarter without doubling the team
- Existing app crashes on edge devices and the original team is gone
- Subscriptions, paywalls, and free trials feel held together with tape
- Push and deep linking 'work' but nobody can map a campaign to revenue
- App Store / Play submissions keep getting rejected and slowing releases
- Roadmap stalled because every feature requires two native engineers
What we ship
Solutions, not slide decks
Each line below is a real deliverable shipped on past engagements, with an honest scope and a metric where it makes sense.
01 / Scope
Cross-platform app build
iOS + Android shipped from one Expo / React Native codebase, with native modules where the platform demands it (camera, BLE, background tasks).
02 / Scope
App audit & rescue
Inherited a codebase that crashes? We do a full teardown, write a stabilisation plan, and either keep shipping it or migrate it cleanly.
03 / Scope
Subscriptions & paywalls
RevenueCat or Stripe Mobile, free trial logic, server-side receipt validation, and analytics so you can actually see retention by cohort.
04 / Scope
Push, deep links & lifecycle
OneSignal or Braze wired into your CRM with deep-linked campaigns. Each notification has a job, re-engage, convert, or escalate to support.
05 / Scope
Release & OTA pipeline
EAS / Fastlane for store releases plus an OTA channel for hotfixes. Bugs get patched in hours, not the next App Store review cycle.
06 / Scope
Native modules
Swift / Kotlin bridges for the things React Native can't reach, camera, BLE, biometrics, background sync, file system access.
How we work
A delivery rhythm you can forecast
No mystery sprints. Each phase has a real artefact at the end of it, and you'll always know what's coming next.
- 01 Week 0
Discovery
Goals, target users, store strategy, and a clear list of what's MVP vs v2.
- 02 Week 1–2
Prototype
A clickable build of the core flows on TestFlight, before we write production code.
- 03 Week 2–10
Build
Sprint cadence, weekly TestFlight + internal Play track, demos every 2 weeks.
- 04 Launch sprint
Submit
Store assets, privacy nutrition labels, screenshots, review-team handholding.
- 05 Month 3+
Operate
On-call for crash spikes, release cadence, OTA hotfixes, and v2 backlog.
Engagement
Pick the shape that fits, we'll suggest the rest
We don't pretend one engagement model fits everyone. Pick the closest, and we'll right-size on the call.
Industries we ship for
MVP build
From empty repo to two stores. Includes design system, auth, payments, push, analytics, and the boring work nobody costs into the original spec.
- Design system + key flows
- Auth + payments + push
- Both stores submitted
- Crash + analytics dashboards
Indicative
$45k–$140k
Timeline
8–14 weeks
Continuous product retainer
After launch, we keep shipping releases, paying down crash backlog, running A/B tests on paywalls, and improving the funnel month-over-month.
- Bi-weekly TestFlight builds
- Crash + perf SLOs
- Store metadata + release ops
- Paywall + activation experiments
Indicative
From $11k / mo
Timeline
Rolling, 3-month minimum
Audit & rescue
Inherited app, crashing app, slow app, ghost-team app, we audit it, write a 90-day stabilisation plan, and quote the work honestly.
- Codebase + dependency audit
- Crash + perf root-cause
- Stabilisation backlog
- Hand-back vs continue plan
Indicative
From $6k
Timeline
1–3 weeks
Stack
The tools we reach for
We're not religious about tools, these are the ones we know deeply enough to ship and operate without surprises.
Cross-platform
Native
Payments & lifecycle
Release & QA
Observability
Common questions
Honest answers, no sales theatre
Should we go cross-platform or fully native?
Defaults to Expo / React Native for almost every product engagement, same codebase, faster iteration, shared design system. We only go fully native when the product depends on hardware-level APIs that React Native can't ergonomically reach. We'll tell you which side of the line you're on in the discovery call.
Can you take over an app that another team built?
Yes, we've done it more than once. The first 1–3 weeks are an audit (dependencies, build pipeline, crash backlog, store account hygiene). After that you'll have a written stabilisation plan and a quote, and you can decide whether to continue with us or take it back in-house.
Do you handle App Store and Play Store submissions?
Yes, including privacy nutrition labels, App Tracking Transparency, screenshots, store metadata, and review-team back-and-forth when something gets rejected. The first submission is part of the build.
How do OTA hotfixes work?
We use EAS Update (or CodePush for legacy apps) to push JavaScript-only fixes outside the store review cycle. Native binary changes still require a store release. Most production bugs we see are fixable OTA, which is why we target a sub-48h hotfix window.
What about subscriptions and paywalls?
RevenueCat for almost every commerce engagement, it handles iOS / Android / web in one place, gives you receipt validation, and exposes cohort retention out of the box. We'll wire it into your analytics so paywall A/B tests aren't a guessing game.
Ready when you are
Let's ship the app you actually want .
Tell us about the product, the timeline, and the constraints. We'll come back with a phased build plan and a transparent estimate, and an honest read on whether we're the right team for it.