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Pillar / Build · iOS & Android

Mobile apps you can actually ship to the store.

Native iOS and Android by default. React Native or Flutter when the matrix justifies it. The pod owns the signing keys, the crash budget, and the store-listing assets — not just the source.

Start a projectTalk to a lead engineer
  • ≥ 99.5%Crash-free release rate
  • Both storesSubmission handled by us
  • 30 daysPost-launch on-call

01 · Platform matrix

Four shapes, picked for the right reasons.

We don't have a default. The matrix below is how we pick on a real project — features, team, distribution.

  1. 01

    iOS native (Swift / SwiftUI)

    When platform integration is the product — Apple Pay, HealthKit, ARKit, deep StoreKit. Or when iOS is the only audience.

  2. 02

    Android native (Kotlin / Compose)

    When background services, hardware integrations, or store-of-record requirements demand the JVM and the Android runtime. EMM-friendly.

  3. 03

    React Native

    When you have a React web team, ≥ 60% UI overlap iOS↔Android, and no exotic native modules. We don't ship Hermes-only — both engines tested.

  4. 04

    Flutter

    When the design language must be pixel-identical across platforms (and the brand can sustain non-native gestures). Material/Cupertino as appropriate.

02 · What you get

Three things every mobile engagement leaves behind.

Not aspirational — written into the SOW and delivered before the App Store screenshot session.

  1. 01

    Signed app skeleton

    iOS bundle id + provisioning, Android keystore in your vault, both stores' developer accounts in your name.

  2. 02

    CI signing setup

    TestFlight + Play internal testing wired to PR builds. So a release candidate is one tag away, not a manual rebuild.

  3. 03

    Crash budget + alerting

    Crashlytics or Sentry wired to your on-call. Crash-free rate target signed in the SOW; regressions auto-page.

03 · How we deliver

Discovery → sprint zero → build → submission.

Mobile has unique cutover risk — store review, signing, certificate expiry. Submission is a planned phase, not an afterthought.

  1. Discovery

    1–2 weeks

    Platform decision (matrix above), distribution model, store policy review. Output: SOW with crash-free rate target and store deadline.

  2. Sprint zero

    1–2 weeks

    Repos, CI signing, both stores' developer accounts, first build to TestFlight & Play internal by end of week 4.

  3. Build

    6–18 weeks

    Biweekly internal release, monthly external beta. Crash-free rate trended weekly. Scope changes are written.

  4. Store submission

    1–2 weeks

    Store-listing assets, privacy nutrition labels, App Privacy questionnaires, content-rating forms. We handle the review back-and-forth.

04 · How to engage

Four shapes — start small, scale only if it earns it.

Same pod, four contracting shapes. Most mobile buyers start with a 3-week architecture review.

  1. 3 weeks · fixed

    Architecture review

    A written, fixed-scope assessment with priced recommendations. Zero pressure to engage further — most buyers start here.

    Fits when

    You need a second pair of eyes before a migration, refactor, or vendor swap.

  2. 8 – 24 weeks

    Project-based

    A defined deliverable, a fixed timeline, a quoted price. We ship, hand off, and stay on call through stabilization.

    Fits when

    The scope is clear and the date matters more than ongoing capacity.

  3. Annual retainer

    Managed operations

    A named pod, a unified SLA, and a monthly executive review. The team you'd hire if you weren't trying to stay lean.

    Fits when

    Multiple workstreams, a roadmap longer than a year, no time to coordinate vendors.

  4. Long-term placement

    Embedded engineer

    One senior engineer (SRE, platform, ML, security) placed inside your team for 6+ months, accountable to your manager — backed by ours.

    Fits when

    You have leadership and tooling, but a specific seat is empty and contracting cycles are too slow.

Indicative ranges in the calculator

Open the calculator

05 · FAQ

Four questions mobile buyers ask first.

Native or cross-platform — which one for us?

Pick from the matrix above. We don't oversell cross-platform — if features are platform-bound, we'll say so before SOW.

Who owns the App Store / Play Console accounts?

You. We never publish under our org. Your team holds the keys; we get a transferable role.

What about ongoing release management?

Either we transfer to your team (KT included), or you stay on a managed-operations retainer. Default is KT in 2 weeks.

Smallest engagement?

A 3-week architecture review for an existing app. Crash-rate audit, build-system audit, store-policy risk read.

06 · Pairs with

Most mobile builds need a backend, a design system, or a marketing surface.

07 · Engage

Bring us a brief, an RFP, or a crash-rate trend that's getting worse.

One delivery lead replies within a business day. Architecture reviews are fixed-scope and can be priced in the same reply.

Start a projectSubmit an RFP