Agency vs Upwork freelancer vs fixed-price developer — real numbers, real timelines, and what BuildZn charges for the same work.
Get a Fixed-Price Proposal →| Mobile Agency | Upwork Freelancer | BuildZn (Fixed Price) | |
|---|---|---|---|
| Simple app (10–15 screens) | $15,000–$25,000 | $3,000–$8,000 | $800 |
| Full-featured app (payments, AI, backend) | $25,000–$50,000 | $8,000–$20,000 | $2,500 |
| Complex marketplace / platform | $50,000+ | $15,000+ | $5,000 |
| Timeline | 3–6 months | Variable (often delayed) | 3–8 weeks |
| Pricing model | Quote / hourly | $25–60/hr | Fixed price |
| App Store submission included | Extra cost | Usually extra | ✓ Always included |
| Bug support after launch | Paid retainer | No guarantee | 1 month included |
| Senior developer guarantee | Junior teams common | No guarantee | ✓ 20+ apps shipped |
Fixed price. 50% upfront, 50% on App Store approval.
Perfect for MVPs and idea validation
Most popular — real features, real launch
Complex platforms and marketplaces
Scope is defined in your proposal. Adding features mid-project gets scoped separately — it never inflates your original quote.
Your timeline is locked in the contract. Muslifie: discovery call to App Store in 6 weeks. FarahGPT: live in under 5 weeks.
You only pay the second half when your app is live on App Store and Google Play. No payment for promises.
No junior handoffs, no PM layers, no lost-in-translation bugs. One person owns your product end to end.
Everything founders ask before booking a call.
A simple Flutter app (10–12 screens, basic backend, iOS + Android) costs $800–$2,000 at BuildZn on a fixed-price basis. An Upwork freelancer would charge $25–60/hr which typically adds up to $3,000–$8,000+ for the same scope. A mobile agency would charge $15,000–$25,000.
At BuildZn, every package includes the Flutter app (iOS + Android), backend integration, App Store and Google Play submission, and 1 month of bug support. Higher tiers add custom Node.js backends, AI integration, admin dashboards, and Stripe/RevenueCat payments.
Flutter is typically 30–50% cheaper than building separate native iOS and Android apps because one codebase covers both. Compared to React Native, Flutter tends to be similar in developer cost but often faster to ship because of fewer dependency issues.
Simple apps: 3–4 weeks. Full-featured apps (payments, AI, real-time features): 5–8 weeks. Complex marketplaces or platforms: 8–12 weeks. BuildZn built Muslifie — a full international marketplace — in 6 weeks.
Instead of paying hourly (where costs spiral), a fixed price means you agree on scope, price, and timeline upfront. BuildZn charges 50% at start, 50% on delivery. If the agreed scope cannot be delivered, you get your money back.
Agencies are expensive ($15,000–$50,000+) and often use junior developers. Upwork freelancers are cheaper but carry disappearing-dev risk. BuildZn gives you a senior developer with a track record of 20+ shipped apps at a fixed price — without the agency markup.
Book a free 15-minute discovery call. I'll scope your project, give you a real timeline, and send a fixed-price proposal within 24 hours — no commitment required.
Get a Fixed-Price Proposal for Your App →Built FarahGPT (5,100+ users) and Muslifie (200+ companies). 20+ apps live on App Store & Google Play.
Written by Umair Bilal
Senior Flutter Developer with 4+ years experience and 20+ apps shipped to App Store and Google Play. Founder of FarahGPT (5,100+ users) and Muslifie (200+ verified companies). Full-stack: Flutter, Node.js, Next.js, AI, Stripe, RevenueCat, Firebase, MongoDB.