Figma to TestFlight in 8 weeks. Apps that pass App Review the first time, ship at 99.7% crash-free, and use the platform like locals — not like web tabs in disguise.
We pick the stack from the problem, not the trend cycle. Most clients leave with a recommendation in week 0 — and a build plan that survives App Review, Play policy, and the next OS release.
SwiftUI-first, Swift Concurrency for sane async, StoreKit 2 for subscriptions. Built for iPhone, iPad, and the SharePlay / WidgetKit / App Clips edges that make apps feel modern.
Kotlin + Jetpack Compose, Material 3, Hilt for DI. Tuned for Play policy, baseline profiles, and the 8000 device matrix you actually ship to.
React Native (Expo + EAS) for product-led teams; Flutter when the brand owns every pixel. Native modules where it matters — Bluetooth, camera, performance hot paths.
tRPC + Postgres, edge-rendered APIs, real-time sync via WatermelonDB or Replicache. The app keeps working in the subway and reconciles on the way out.
Fastlane pipelines, internal + beta tracks, signed builds on every PR. App Review and Play policy submission handled by us — including the rejection letters nobody warned you about.
Crash triage, A/B tests, store-listing tuning, OS-update breakage. Optional retainer for v1.x — paid by sprint, never on a yearly handcuff.
Mobile has its own rhythm — App Review timelines, store metadata, beta tracks. Our process is built around that calendar, not pasted from a web template.
Native vs RN vs Flutter — decided with you, not by us. Store-readiness audit, OS support matrix, and a fixed quote within 24 hours of the kickoff call.
Fixed quote · platform recommendationHigh-fidelity Figma, then a clickable iOS / Android prototype on your device in two weeks. Real interactions, real type, real haptics — not just static screens.
Clickable prototype · on your phoneInternal-track TestFlight / Play every Friday. You install, you tap, you write the next sprint with us. No surprise launches — only surprise polish.
Friday builds · 5 sprints, 5 demosListing copy, screenshots, App Privacy, IDFA, Play policy. We handle the submission, the rejection letters, and the follow-ups until you're live.
Live in stores · plus 30-day supportProduction mobile apps — each made it past App Review, into real hands, and into a roadmap on the other side.
An AI field-design tool for landscape-lighting contractors. Capture a scene offline, turn a day photo into a technically accurate night rendering, and auto-script an avatar-narrated pitch — three apps replaced by one, ~$1.5k of manual time saved per job.
Match management and matchmaking for amateur football clubs. Live score push, auto-computed league tables, and fixture RSVPs — cut no-shows 68% against the group-chat era it replaced.
A predictive personal-finance app built around one number — what's actually safe to spend today, every committed dollar already subtracted. Envelope budgets and a 30-day forecast — 31% fewer overdrafts per active user.
Fixed-price sprints, full builds, or ongoing programs. We'll tell you which fits in the scoping call — and if none fit, who else to talk to.
A fixed two-week burst. Best for hi-fi prototypes, technical de-risking, or a focused feature push.
Idea to App Store. The full lifecycle — design, native build, QA, submission, launch. Fixed price, fixed window.
Embedded team for ongoing growth, new features, and platform expansion. Monthly engagements, roadmap on-call.
A reader, not an accordion. Pick a question on the left — the full answer opens on the right. Filter by topic, or step through with prev / next. Missing one? Ask in the brief and we'll answer in the reply.
We choose based on the product, not the trend. Native (SwiftUI / Jetpack Compose) for hardware-heavy work — camera, BLE, AR, audio, performance hot paths — or for design teams that own every pixel and want platform-true motion.
React Native + Expo for product-led teams shipping weekly who don't need bespoke per-platform UX. The platform call happens in week 0, in writing — and we'll tell you when you don't need an app at all.
Both. A senior product designer leads weeks 1–2 in Figma — wireframes, hi-fi mocks, and a clickable prototype installed on your device by day ten. Native motion, real type, real haptics — not static screens.
If you already have a designer or a working Figma, even better. We'll pair with them through the sprint and skip the design fee — engineering is the deliverable, design is the means to a shippable v1.
You do — from day one. We set up App Store Connect and Play Console under your business entity, using your domain, tax ID, and bank details. We're added as developers, never as owners or admins of the financial side.
At launch we hand over the keys, transfer team access, and step out cleanly. You own the listing, the signing certificates, the revenue, and every review — forever. No vendor lock-in.
Included. We've handled 4.0 (functionality), 5.1.1 (permissions), 5.1.2 (data collection), and the long tail of Play policy escalations. Most rejections come down to copy, privacy strings, or screenshot mismatches.
If Apple or Google sends a letter during the engagement, we draft the response, fix the underlying issue, and resubmit — no extra invoice, no separate scope. The submission deadline stays the deadline.
Two options. Sprint retainer — buy 2-week increments as you need them, no monthly minimum, cancel any time. Or handoff — full source, CI pipeline, runbooks, and a 30-day Slack channel for your in-house team to ramp on.
Most clients start on sprint and move to handoff around v1.2, when their team is hired and the product has settled into a release rhythm. We don't sell yearly contracts.
Yes — mutual NDA returned within the hour, no lawyer rounds, no back-and-forth on language. Tick the NDA box in the brief form and we'll send our template back signed before your reply lands in our inbox.
For sensitive briefs we also offer encrypted email (PGP) and Signal — details shared on request after the NDA is countersigned. Routine for us, fast for you, no extra charge.
We've shipped HIPAA-aligned health apps and SOC 2 type II environments — including the audit prep, the BAAs, the documentation, the penetration tests, and the long tail of vendor questionnaires that come with them.
Compliance work lives in the Program tier, never the Build budget — the paperwork alone is real engineering, and we won't try to squeeze it in. Tell us the framework, we'll quote the scope cleanly.
Tell us anyway. The three tiers cover ~80% of what we do; the other 20% is the interesting work — 10-week scopes, weird hardware (BLE meshes, custom firmware), white-label SDKs, and multi-app product suites.
We scope it from the brief and send a fixed quote within 24 hours. The reply is either a custom proposal or a referral to a studio we trust that's a better fit for what you're trying to ship.
Real numbers from the apps we've put in production — pulled from Sentry, App Store Connect, and Play Console. Updated quarterly, not for the brochure.
There's a wall of testimonials on the home page. This is the one that matters for mobile — from a founder who shipped, got featured on App Store Today the month we launched, and let us put real numbers in this quote.
We'd tried two agencies before BytesGenX. Both promised "native feel." Neither shipped. BytesGenX got us into TestFlight in week three, into the App Store in week nine, and onto App Store Today the month after.
They write Swift like Swift engineers. That sounds obvious until you've worked with people who don't.
★★★★★"They turned our Figma into a TestFlight build in nine working days. Zero hand-waving, every commit reviewed."
★★★★★"First time we shipped to the App Store without a rejection. They knew every policy trap before we did."
★★★★★"Fixed price, fixed scope, no missed deadline. After six agencies, I'd given up on this combo."
Whether it's a one-platform sprint or a multi-quarter mobile rebuild, we reply within 4 hours — usually with a fixed quote, a sprint plan, and a TestFlight target date.
