Tenth Floor Labs

Build — Mobile App Development

Mobile App Development for Android & iOS, Built to Launch

We build Android and iOS apps from one shared codebase using Flutter or React Native. It suits startups testing an idea and businesses giving customers an app. You talk directly to the engineers building it.

Mon–Sat · 9am–8pm IST
Starting from
₹2L
one-time
Timeline
8–20 weeks
typical
After launch
App care from ₹15k/mo (optional): OS updates, fixes, monitoring
Maulik Gupta, Founder & Lead Engineer
Maulik Gupta
Founder & Lead Engineer · you'll talk to me

Sound familiar?

What usually goes wrong with apps

  • We got quotes from ₹50k to ₹50L and can't tell what we actually need.
  • Our last agency disappeared halfway and we don't even have the code.
  • The app works on one phone but crashes on others.
  • We need an app, but also a panel to manage users, orders and payments.
  • The app got rejected by Apple and we don't know why.

Built for

Startup founders building a first version (MVP)Service businesses adding booking and payments for customersMarketplaces connecting buyers and sellers or providersClinics, gyms and coaching institutes wanting a member appCompanies needing a field-staff or delivery appBusinesses replacing a slow or broken existing app

What we do

What's included in Mobile App Development.

01

Android & iOS App Development

One codebase in Flutter or React Native that runs on both platforms. Faster to build and cheaper to maintain than two apps.

02

MVP App Development

The smallest version that proves your idea with real users. We help you cut features you don't need yet.

03

App UI/UX Design

Clickable screens you can try on your phone before we write code. Simple flows that first-time users understand.

04

Admin Panel & Backend

A web dashboard to manage users, orders, content and payments, with secure APIs and a database behind the app.

05

Payments, Chat, Maps & Notifications

Razorpay or UPI payments, in-app chat, location and maps, and push notifications, built in and tested.

06

Play Store & App Store Publishing

We prepare listings, screenshots and privacy details, and handle review and approval on both stores.

Pricing

Transparent packages. Fixed quotes.

Your final quote is fixed after a 20-minute call — no surprise bills.

MVP

₹2L
8–10 weeks
  • Cross-platform app (Flutter or React Native)
  • Up to 12–15 core screens
  • Login with phone OTP or email
  • Basic admin panel
  • Push notifications
  • Play Store and App Store publishing
Get this quote
Recommended

Growth

₹7L
12–14 weeks
  • Everything in MVP
  • In-app payments with Razorpay or UPI
  • In-app chat
  • Maps and location features
  • Full admin panel with reports
  • Crash reporting and analytics
Get this quote

Advanced

₹12L+
16–20 weeks
  • Multi-sided marketplace (customer, provider, admin)
  • Real-time tracking and live updates
  • Wallets, payouts or subscriptions
  • Integrations with your ERP or CRM
  • Load testing for high traffic
  • Separate staging and production setup
Get this quote

Ongoing costs after launch

No surprises: here's everything you may pay every month, stated upfront.

With us

App care from ₹15k/mo (optional): OS updates, fixes, monitoring

See all ongoing plans
Paid to third parties, at cost, no markup

Cloud hosting ₹2k–20k/mo by usage · Apple $99/yr

  • —Google Play developer account: one-time $25 (about ₹2,200), paid by you to Google.
  • —Apple Developer Program: $99 per year, paid by you to Apple.
  • —Cloud hosting and database (AWS, Google Cloud or Firebase), billed to you at cost.
  • —SMS OTP, maps and push notification usage charges from Google, Twilio or others.
  • —Payment gateway fees per transaction.
  • —Paid third-party SDKs or APIs, only if the app needs them.

Want a quick estimate for your exact project? Try the cost estimator.

Process

From first message to launch.

Clear stages, a live preview link every week, and payments tied to milestones you approve.

  1. Step 011 week

    Scope and fixed quote

    We list every screen and feature with you, then cut what can wait. You get a fixed quote and milestone plan.

  2. Step 022–3 weeks

    Design and prototype

    Clickable prototype you can test on your phone. We change it until the flow feels right.

  3. Step 034–14 weeks

    Build in sprints

    We build in weekly sprints. You install test builds on your phone every week and share feedback.

  4. Step 041–2 weeks

    Testing and store launch

    We test on many real devices, fix issues, and publish to both stores. Free fixes for 30 days after launch.

Technology

Tools we trust.

FlutterReact NativeDartTypeScriptFirebaseNode.jsGoPostgreSQLRazorpayGoogle MapsOneSignalSentry

Our promises

Working with us is low-risk.

Fixed quote

A clear, fixed price after a 20-minute call. No surprise bills.

Pay in milestones

Projects: 40% to start, 30% on design approval, 30% at launch.

You own everything

Code, domain, ad accounts, WhatsApp number and data — in your name.

Weekly previews

See real progress on a live link every week, not just status updates.

30 days of free fixes

Anything not working as agreed after launch, we fix at no cost.

Talk to the builder

No account managers. You speak with the engineers doing the work.

FAQ

Questions, answered.

How much does it cost to build a mobile app in India?+

Our apps start at ₹2L for an MVP. A Growth app with payments, chat and maps is ₹7L. Marketplace or real-time apps start at ₹12L. The cost depends on the number of screens, user types, integrations and how much runs in real time.

Do I need both an Android and an iOS app?+

Usually yes, but it doesn't mean paying twice. We build one codebase that runs on both. If most of your users are on Android, we can launch there first and add iOS later with little extra work.

Flutter or React Native, which is better?+

Both are good and used by large companies. Flutter gives very smooth screens. React Native is great if you also have a React website. We pick based on your features and who will maintain the app later.

How long does it take to build an app?+

An MVP takes 8–10 weeks. A Growth app takes 12–14 weeks. Advanced apps take 16–20 weeks. App store review can add a few days, which we plan for.

Will I own the app's source code?+

Yes. The code sits in a repository in your name. The developer accounts, cloud hosting and store listings are also in your name. You can take the app to any team in future.

What does the app cost to run each month?+

You pay the Google Play and Apple developer fees (a one-time $25 for Google and $99 a year for Apple), plus hosting, SMS and maps usage. For a new app with few users, running costs are usually small. We estimate them before we start.

Do you support the app after launch?+

You get 30 days of free fixes after launch. After that, you can choose a monthly plan for updates, new Android and iOS versions, and new features.

Let's scope your project.

One message is enough. You'll speak directly with the engineer who builds your system — and get a fixed quote, not a sales pitch.

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