Mobile App Development Company in Chicago
Developers of Chicago is a Chicago mobile app development company building React Native and Flutter apps for iOS and Android. We ship native iOS, native Android, and cross-platform apps for fintech, health, and on-demand businesses. With a 48-hour prototype turnaround, a 4.8-star average App Store rating, and 23 apps shipped, we deliver mobile apps that users love.
Native Performance, Cross-Platform Speed
We build across three platforms to match your product needs and budget.
- iOS Native — SwiftUI and Objective-C with Apple HealthKit and FaceID integration.
- Android Native — Kotlin and Java with Material You design and background services.
- Cross-Platform — React Native and Expo, Flutter desktop and web, with shared business logic across iOS and Android.
Our 5-Phase Mobile App Development Process
- Discovery and Strategy — We start with a deep-dive discovery session to understand your business goals, target users, and competitive landscape. We define the MVP scope, map user journeys, and produce a technical roadmap aligned with your revenue milestones.
- Design and Prototyping — Our designers translate requirements into wireframes, then high-fidelity Figma prototypes you can tap through on your own phone. We iterate on visual design, micro-interactions, and accessibility until every screen feels intuitive.
- Development — Engineers build in weekly sprints with demoable progress every Friday. We use React Native, Flutter, or native Swift and Kotlin depending on what the product demands, writing clean, documented, testable code from day one.
- Testing and QA — Every release candidate goes through automated unit and integration tests, manual QA across real iOS and Android devices, and a security review for auth, payments, and data storage.
- Launch and Support — We handle the full App Store and Google Play submission process, including store listings, screenshots, privacy nutrition labels, and review-team responses. After launch we monitor crash reports and ship updates on a regular cadence.
Industries We Build Mobile Apps For
We have shipped production apps across regulated, high-stakes, and high-growth verticals for Chicago startups and enterprises alike.
- Fintech — Digital wallets, peer-to-peer payments, investment dashboards, and neobank apps built with PCI-aware architecture and bank-grade encryption.
- Healthcare — HIPAA-compliant telehealth, patient scheduling, and HealthKit-integrated wellness apps that keep sensitive data secure.
- E-commerce — High-conversion shopping apps with Stripe checkout, real-time inventory sync, push notifications, and one-tap reorder flows.
- Logistics — Driver tracking, route optimization, and warehouse management apps with offline-first sync and live GPS updates for last-mile delivery fleets.
- Social — Community and messaging apps with real-time chat, activity feeds, media sharing, and moderation tooling.
- Real Estate — Property search, virtual tours, and agent CRM apps that connect buyers, renters, and brokers with rich listing data and in-app scheduling.
Tech Stack
The frameworks and services we reach for first: React Native, Flutter, Swift, Kotlin, Expo, Firebase, Supabase, and Stripe. Each technology earns its place in our toolkit based on production performance and long-term maintainability.
Transparent Pricing
No hidden fees. We estimate exactly what it takes.
| Tier | Price | Includes |
|---|
| MVP Mobile App | $3k to $8k | iOS and Android codebase, core business flow, auth and database, standard UI components. |
| Full Production App | $10k to $25k | Complex UX and animations, payment gateways, third-party APIs, scalable backend architecture. |
| Enterprise | Custom | Legacy modernization, multi-platform sync, high security and compliance, white-label solutions. |
Frequently Asked Questions
How much does it cost to build a mobile app in Chicago?
Most MVPs we build land between $3,000 and $8,000, while full production apps with payments, third-party integrations, and scalable backends typically range from $10,000 to $25,000. Enterprise projects with legacy modernization or compliance requirements are quoted custom. We give you a fixed estimate before any work starts.
Should I build for iOS, Android, or both?
If your budget allows, we recommend launching on both platforms simultaneously using React Native or Flutter, which share a single codebase. If you need to validate fast, we can ship iOS first since the App Store tends to drive higher revenue per user, then port to Android once product-market fit is confirmed.
How long does mobile app development take?
A focused MVP usually ships in 4 to 8 weeks. Full production apps with complex backends, payments, or real-time features typically take 10 to 16 weeks. We work in weekly sprints with demoable progress every Friday.
Do you handle App Store and Google Play submission?
Yes. We manage the entire submission process including store listings, screenshots, privacy nutrition labels, review-team communication, and rejection resolution. We have shipped over 20 apps through both stores.
Can you update or take over an existing app?
Absolutely. We frequently inherit React Native, Flutter, Swift, or Kotlin codebases from other teams or agencies. We start with a code audit to assess quality, technical debt, and risks, then provide a remediation plan and take over ongoing development.
Do you provide ongoing maintenance after launch?
Yes. We offer monthly maintenance plans that cover OS-version compatibility updates, security patches, bug fixes, and small feature work. Most clients keep us on retainer so their app stays healthy as Apple and Google release new platform versions.