App Development Cost — What You'll Actually Pay
Direct Answer
Mobile app development typically costs $5,000–$20,000 for a simple MVP, $20,000–$45,000 for a mid-complexity app, and $50,000–$120,000+ for a complex, feature-rich app. The biggest cost drivers are the number of screens, backend complexity, third-party integrations, and whether you need real-time features or AI — not the choice between iOS and Android, since cross-platform frameworks cover both for nearly the same price.
▸ Pricing Tiers
Three tiers of app complexity and cost
Most apps fall into one of these three tiers. Your actual quote depends on your specific feature list, scoped during a free discovery call.
MVP / Simple App
6–8 weeks delivery
A focused app with 5–10 screens, basic auth, and a simple backend — built to validate an idea with real users.
- ✓5–10 screens
- ✓Email/social login
- ✓Basic backend (Supabase/Firebase)
- ✓Single core user flow
- ✓iOS + Android (cross-platform)
Mid-Complexity App
10–14 weeks delivery
A production app with custom backend logic, payments, and a handful of third-party integrations.
- ✓15–30 screens
- ✓Custom backend & API
- ✓Payment integration
- ✓Push notifications
- ✓2–3 third-party integrations
Complex / Enterprise App
16–24+ weeks delivery
A feature-rich app with real-time data, advanced backend architecture, AI features, or multi-role access.
- ✓30+ screens
- ✓Real-time features
- ✓AI/ML features
- ✓Advanced security & compliance
- ✓Multi-role access control
All quotes are fixed-price after a free scoping call — no hourly billing surprises.
▸ Cost Factors
What actually drives the price up or down
Platform choice matters far less than these six factors when it comes to final cost.
Number of Screens
More unique screens and user flows mean more design and development hours.
Backend Complexity
A simple Supabase/Firebase backend costs far less than a custom Node.js API with complex business logic.
Third-Party Integrations
Each integration (payments, maps, video, CRM) adds development and testing time.
Real-Time Features
Live chat, tracking, and notifications require more sophisticated infrastructure than static data.
Design Complexity
Highly custom, animation-heavy UI takes longer to design and implement than standard component patterns.
Security & Compliance
Apps handling payments, health, or financial data need extra security work and sometimes compliance audits.
▸ Process
How 4Byte arrives at a fixed-price quote
Transparent pricing starts with transparent scoping. Here's exactly how we get from idea to a number you can trust.
Free Scoping Call
We discuss your app idea, core features, and platform targets to understand the real scope before quoting anything.
Fixed-Price Quote
Based on the discovery call, we send a detailed, fixed-price quote broken down by feature — no hourly billing surprises.
Milestone-Based Delivery
We break the build into milestones (design, backend, app, QA) with clear deliverables at each stage.
Launch & Transparent Handover
You receive the final cost breakdown, source code, and documentation — no hidden line items at the end.
▸ Why 4Byte Pricing
Pricing that respects your budget and your timeline
We've seen too many founders burned by vague quotes. Here's how we price differently.
Itemized, Transparent Quotes
Every quote breaks down cost by feature, so you know exactly what you're paying for and can adjust scope if needed.
Fixed-Price Protection
Once a quote is locked, the price doesn't change unless you add new scope — no surprise invoices mid-project.
Cost-Aware Architecture
We design with your budget in mind, recommending tools like Supabase over custom infra when it saves cost without sacrificing quality.
Phased Investment Options
Launch with a lean MVP first, then reinvest revenue into v2 features instead of overspending upfront.
Competitive Global Rates
Our Mumbai-based team delivers US/UK-quality engineering at a meaningfully lower cost than Western agencies.
No Inflated Maintenance Fees
Post-launch maintenance retainers are scoped honestly — we don't pad ongoing costs to make up for a low initial quote.
▸ Common Mistakes
Budgeting mistakes founders make — and how to avoid them
Cost overruns are almost always avoidable with the right scoping conversation upfront.
Mistake
Choosing the cheapest quote without scope detail
4Byte Approach
We provide itemized quotes so you can compare what's actually included — a lower number with vague scope often costs more once "extras" appear.
Mistake
Underestimating backend and integration cost
4Byte Approach
We scope the backend and every third-party integration explicitly upfront, since these are the most commonly underestimated cost drivers.
Mistake
Skipping the MVP and building "everything" first
4Byte Approach
We help you separate must-have features from nice-to-haves, so your first investment validates the idea before you spend on scale features.
Mistake
Ignoring post-launch maintenance costs
4Byte Approach
We give you a realistic monthly maintenance estimate upfront, so total cost of ownership is clear — not just the initial build price.
▸ Technology Stack
Cost-efficient tools that don't sacrifice quality
We pick tools that minimize unnecessary cost without cutting corners on reliability or performance.
“The quote 4Byte gave us was the exact final invoice — down to the dollar. No agency had ever been that precise with us before.”
Natalie B.
Founder · Booking app, Canada
“We compared three agencies. 4Byte's itemized breakdown made it obvious where the other quotes were hiding costs.”
Faisal R.
Co-founder · Fintech startup, UAE
“Starting with the MVP tier saved us from overbuilding. We added features in phase two once we had real user data.”
Chloe W.
Product Manager · E-commerce app, Australia
▸ FAQ
Frequently asked questions about app development cost
Direct, no-nonsense answers to the pricing questions founders ask most.
How much does it cost to build a mobile app?+
Mobile app development typically costs $5,000–$20,000 for a simple MVP, $20,000–$45,000 for a mid-complexity app with backend logic and integrations, and $50,000–$120,000+ for a complex app with real-time features, payments, or AI.
What factors affect mobile app development cost the most?+
The biggest cost factors are the number of screens, backend and database complexity, third-party integrations (payments, maps, video), real-time features, and whether you need native development versus cross-platform frameworks like React Native or Flutter.
Is it cheaper to build for one platform first?+
With cross-platform frameworks like React Native or Flutter, building for both iOS and Android simultaneously costs barely more than building for one — usually only 10-15% more — since the codebase is shared.
Does app development cost include App Store and Google Play fees?+
No. App Store and Google Play charge separate developer account fees ($99/year for Apple, $25 one-time for Google) that are not included in development cost and are paid directly to Apple and Google.
What ongoing costs should I expect after launch?+
Post-launch costs typically include hosting/backend infrastructure ($20–$200+/month depending on scale), bug fixes, OS update compatibility, and feature additions — often covered by an optional maintenance retainer.
Does 4Byte Agency offer fixed-price app development?+
Yes. 4Byte scopes every app project with a fixed-price quote after a discovery call, so there are no surprise costs mid-build. We avoid open-ended hourly billing for app development projects.
▸ Related Resources
Continue exploring mobile app development
Mobile App Development Guide
The complete process, cost, and timeline breakdown for building an app.
MVP Mobile App Development
How to scope and ship a lean, testable first version of your app.
Flutter vs React Native
A direct comparison to help you pick the right framework.
Cost to Build a Mobile App
A deeper, line-item breakdown across app complexity tiers.
App Backend Architecture
Designing APIs and databases that scale with your user base.
React Native Development
How 4Byte builds cross-platform apps with React Native.
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