AI Mobile App Development Studio
Codixus is a product studio that ships AI-native iOS and Android apps end-to-end. Discovery, design, engineering, App Store submission, subscription billing, growth. One team, fixed scope, $2,749 starter.
One opinionated stack covering inference, cross-platform mobile, backend, subscriptions, push, and product analytics. We run our own AI apps in the App Store, so you are hiring a team that has already paid the production tuition on rate limits, model routing, and AI unit economics.
What we ship
Our AI mobile apps are not wrappers around chat endpoints. They are production-grade products with the entire infrastructure an AI-native business needs to charge real money on day one.
Cross-platform mobile
React Native with Expo for one codebase shipping to iOS and Android. Native modules where they matter: camera, share sheet, in-app purchase, background tasks. No web view shortcuts.
AI inference layer
Anthropic Claude and OpenAI wired in through a server-side proxy. Streaming responses, tool calls, structured output, prompt caching, model routing, and per-user rate limits baked in.
Backend + auth
Bun runtime on the API, Supabase for Postgres, auth, storage, and realtime. Edge-deployed where latency matters. Zero Kubernetes ceremony for products that do not need it.
Subscriptions
RevenueCat for App Store and Play Store in-app purchases, receipt validation, entitlements, and revenue analytics. Paywall placement and pricing experiments included.
Push + lifecycle
OneSignal for push notifications and lifecycle messaging. Timezone-aware sends, segment targeting, and the kind of re-engagement campaigns that actually move retention.
Analytics + ASO
Litemetrics for product analytics, Google Search Console integration for organic discovery, App Store Connect ASO setup with iterating keywords, screenshots, and listing copy.
Why founders choose Codixus
Own-brand portfolio of shipped AI apps
CurtainAI, FiberCheck, PromptJr, OKNOK, PassThePhone, Bluffin, BeJudge, and Flast are all live in the App Store under our own brand. We have shipped through Apple review for AI generation, kids categories, photo uploads, and subscriptions. We bring those scars to your project.
End-to-end studio, not a body shop
You get one accountable team for design, engineering, submission, ASO, push, and post-launch iteration. No hand-offs to a separate growth agency, no separate ASO consultant, no missing piece that quietly kills your conversion rate three months in.
AI-native from day one
Architecture decisions made with AI as a first-class citizen, not bolted on at the end. That means streaming UX, cost-aware model routing, prompt caching, eval harnesses, and a path to fine-tuning that does not require a rewrite.
Transparent fixed-scope pricing
Starter from $2,749. Pro and Enterprise tiers published publicly. No hourly billing surprises, no scope creep invoiced quietly. You know the budget before we write the first line of code.
Our approach
Discovery
One-week sprint to lock the core AI flow, the monetization model, and the metric that matters. Output is a fixed scope and a clear go or no-go.
Design + build
Three to six weeks of design and engineering in parallel. Weekly TestFlight builds. You see the product running on a real device before week two.
Launch + ASO
App Store and Play Store submission, screenshots, keywords, reviewer notes, and the first ASO iteration tuned against early install data.
Operate + iterate
Three months of free post-launch consultancy. Bug fixes, paywall experiments, push campaigns, AI cost monitoring, and retention work.
Featured AI work from our own portfolio
Three of the AI apps Codixus designed, built, launched, and operates today.
CurtainAI
AI curtain visualizer for homeowners and interior designers. Photo upload, model-driven render, subscription paywall, live in production.
PromptJr
AI learning companion for kids 6 to 14. Age-gated content, parental controls, structured curriculum lessons, and a free tier that converts to subscription on lesson four.
FiberCheck
AI fabric safety scanner for parents. Camera input, vision model classification, plain-English safety verdicts, and a weekly subscription that pays for itself on day one.
Transparent pricing, fixed scope
Starter projects begin at $2,749 and cover a focused AI MVP with one core AI flow plus auth, subscription, push, and analytics. Pro and Enterprise tiers scale scope, integrations, and team size. Every quote is fixed-scope, not open-ended hourly billing.
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