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Launch a real iOS + Android app. In two weeks.

A product studio for founders that specialises in iOS + Android apps — in Flutter, SwiftUI, React, or FlutterFlow — and also builds web apps, websites, and AI.

See how we launch in 14 days
5.0 7 verified client reviews

We pick the right stack for each product

  • Flutter
  • FlutterFlow
  • Dart
  • Swift
  • Kotlin
  • React
  • Next.js
  • TypeScript
  • Capacitor
  • Firebase
  • Supabase
  • Stripe
  • RevenueCat
  • Node.js
  • Google Cloud
  • PostHog
  • Sentry
  • Figma
  • GitHub
  • App Store
  • Google Play

Recognised by

FlutterFlow Partner Agency

Vetted by FlutterFlow · View our listing ↗

Track record

20+ apps launched

Health, compliance, social, music · See the work

Production stack

Stripe + RevenueCat live

Firebase · Supabase · Sentry · PostHog · OTA

Reviews

5.0 from every founder who's reviewed us.

Real names, real projects, checkable on Clutch. No stock quotes.

5.0

7 verified reviews · 4 on Clutch

100% on-time (Clutch)

Verified client review

“I hired LunarBuild to build my MVP based on FlutterFlow over a few weeks. The team is highly skilled and highly professional. Neil is an excellent point of contact, always making sure I had everything I needed. At every stage we collectively reviewed the milestones until I felt confident with the result. I’d highly recommend them for FlutterFlow/Firebase MVP development.”

Cherizza Lundy

Client at Kneed Health · Jul 2025

Verified on Clutch

“LunarBuild delivered excellent work and was highly responsive throughout the project.”

Every milestone completed with a 95%+ QA pass rate, key components on or ahead of schedule.

Marlon Rodriguez

CEO, MROD Automation · May 2025

Verified on Clutch

“All was done as promised and professionally.”

App, web interface, dashboard, and landing page — delivered ahead of time, exceeding expectations.

Richard Decker

CEO & Founder, Authenti · May 2026

Verified client review

“Working with LunarBuild was excellent. Professional and clear from the start, quick and stress-free. This was the second time LunarBuild has created a project for me — if I need anything else, I’ll contact them immediately.”

Branislav Beljic

Repeat client · Jul 2025

Verified on Clutch

“What I found most impressive was their ability to deliver specific features in the exact way I wanted them to work.”

Two marketplace apps with a custom booking system, built to spec.

Adrian Hernandez

Founder, Kiko Enterprises · Mar 2025

Verified on Clutch

“Expertise and suggested improvements were helpful, and we felt we were in good hands throughout the process.”

Custom audio player built, tested on iOS and Android, and launched on Google Play within budget.

Randi Erickson

Owner, Sweet Dreams Storytime · Oct 2024

Verified client review

“Just finished my first project with Neil and the LunarBuild team. Fantastic experience, great communication, very responsive, and the work was done timely and spot on. Will definitely be working together again soon.”

Ryan Zeleznak

First-project client · Jul 2025

Four reviews are verified on Clutch; three are direct client reviews. Read them in full.

Selected work

Real products, built end-to-end.

A few of the 20+ products we've designed, built, and launched end-to-end.

See all work & reviews

Services

What we design, build, and rescue.

We specialise in iOS + Android apps — and build the web apps, websites, and AI around them. Work with us on the whole product or just one piece.

All services, pricing, and FAQs

What you get on Day 14

A production app, not a prototype.

Four things every real Flutter app needs — wired in by Day 14, not "we'll figure that out in v2."

Production binaries

Signed iOS .ipa and Android .aab from one Flutter codebase. Exported Dart, version-controlled, in your GitHub.

Real payments live

Stripe + RevenueCat wired in. Subscriptions, in-app purchases, paywalls, and entitlements that survive App Store review.

Push, deep links, analytics

FCM + APNs push, deep-link routing from notification to screen, PostHog + Sentry from Day 1 — not after the first crash.

Store-ready listings

App Store + Play Store listings, screenshots, and review prep drafted by Day 14. Submission is the next milestone — most apps are approved within a week of submitting.

Beyond Day 14: custom Dart widgets, Swift / Kotlin native modules, Supabase or Firebase backends, OTA updates — see the process and rescue block.

First milestone risk-free

Progress in two weeks, or it's free.

If you don't see real, working progress at the Day-14 demo, you owe nothing and walk away with whatever we built. No contracts. No retainer lock-in. No "kickoff fees."

Read the fine print

  • Promise

    14-day first milestone

  • Promise

    TestFlight by Day 3

  • Promise

    Fixed price, no retainer

  • Promise

    Pause or cancel any month

How we work

From brief to first milestone in four steps.

14 days from kickoff to a real, working app on your phone — that's the first milestone. Store submission, scaling, and v2 work continue from there at the same milestone-based cadence. Free intro call, fixed quote in 24h, first milestone risk-free.

  1. Day 0

    Audit + spec

    Free 20-min intro call. We sketch the FF project shape, flag anything that needs custom code, and send a fixed quote within 24 hours.

    • Scope doc + milestone plan
    • FF audit if you've already started
    • Fixed-price quote, in writing
  2. Day 1–3

    FF skeleton

    Theme, design system tokens, navigation, auth, and the empty shell of every screen. By Day 3 you can click through your entire app on a real device.

    • Brand-tuned theme + tokens
    • Navigation + auth wired
    • TestFlight + Play Internal builds
  3. Day 4–10

    Build + custom code

    Real screens, real data, real payments. Where FF can't go we drop into Dart, custom widgets, and native modules — same codebase.

    • Stripe + RevenueCat live
    • Custom widgets + native modules
    • Friday demo + Loom every week
  4. Day 11–14

    First-milestone demo

    Working app on a real device. End-to-end flows, payments live, analytics + crash reporting wired in. We walk you through it on a Loom and hand over the build for sign-off.

    • TestFlight + Play Internal build
    • Handoff Loom + 1-page architecture doc
    • Sign-off → next milestone or wrap-up

After Day 14: App Store + Play Store submission, post-launch bug support, and v2 scope — same milestone-based cadence, same flat-fee per milestone. Most projects launch on the stores within another 1–2 milestones.

Why us

We write custom code, not just clicks.

Most "FlutterFlow agencies" are no-code shops who hit a wall the moment your app needs anything novel. We start where they stop.

Official FF Partner

Vetted by FlutterFlow themselves. Direct line to platform engineers, early access to features, and a public listing that's reviewed annually.

  • Partner-tier support pipeline
  • Reviewed by FF, not self-claimed
  • Listed on FF's partner directory

The right stack, every time

Flutter, SwiftUI, React + Capacitor, or FlutterFlow — we pick per product, not per habit, and write the custom Dart, Swift, and Kotlin when a tool runs out of road.

  • Insider knowledge of FF internals
  • Codegen-aware project structure
  • Migration paths off FF if you outgrow it

Friday demo + Loom every week

Every Friday you get a working build on your phone and a 5-minute Loom walking through what launched that week. No "I'll have it next week." No black-box weeks. You always know where the build is.

  • Friday TestFlight + Play Internal build
  • 5-min Loom walkthrough every week
  • Slack-first comms · <4h response on weekdays

Free · 20 min · Fixed quote in 24h · No deck

Already in FlutterFlow?

Stuck on something FF can't do? We've fixed it before.

We start every rescue with a free 2–4 hour audit and a written report — what's healthy, what's risky, what we'd change. Then a fixed quote for the fix or the migration. Most stuck FF apps need three things: a real backend layer, a few targeted custom widgets, and a small native bridge.

What's in the audit

  • Common rescue

    Custom widget that won't stop re-rendering

  • Common rescue

    Stripe + Supabase handshake half-built

  • Common rescue

    Native bridge that won't compile on iOS

  • Common rescue

    Rejected App Store review, third time

Compare

Four ways to launch a mobile app. Only one delivers in 14 days.

Here's the honest breakdown of LunarBuild vs. the three other paths founders typically consider — written by us, for skeptics.

LunarBuild

FlutterFlow Partner Agency

Time to first milestone
~14 days
Pricing model
Fixed, milestone-based
FlutterFlow eng access
Partner-tier
Custom Dart + native
Yes, daily
Weekly Friday demo
Every week
Source on GitHub
From Day 1
Zero-risk first milestone
Yes

vs. No-code shop

Bubble · Glide · Adalo
Time to first milestone
4–8 weeks
Pricing model
Hourly
FlutterFlow eng access
—
Custom Dart + native
Rare
Weekly Friday demo
—
Source on GitHub
On launch (maybe)
Zero-risk milestone
Rare

vs. Solo freelancer

Upwork · Toptal
Time to first milestone
6–12 weeks
Pricing model
Hourly
FlutterFlow eng access
—
Custom Dart + native
Sometimes
Weekly Friday demo
Sometimes
Source on GitHub
Yes
Zero-risk milestone
Rare

vs. DIY in FlutterFlow

You + tutorials
Time to first milestone
Months
Pricing model
Your time
FlutterFlow eng access
—
Custom Dart + native
If you can
Weekly Friday demo
N/A
Source on GitHub
Yes
Zero-risk milestone
N/A

20-min call · No deck · Walk away with the scope doc either way

Who you'll work with

Neil Paul — founder & lead engineer.

Before LunarBuild, Neil worked on the FlutterFlow platform itself. Today he's the point of contact on every engagement — from the intro call to the store launch. You talk to the person writing the architecture, not an account manager.

About LunarBuild Neil on LinkedIn ↗
Ready when you are

Tell us about your mobile app project.

Pick a time below for a free 20-minute call. We'll talk through your idea — or your stuck FlutterFlow build — rough scope, timeline, and send a fixed quote within 24 hours. No slides, no pitch deck, no follow-up sales loops.

Free 20 minutes Fixed quote in 24h NDA on request
FAQ

Questions we get on every call.

Can't find what you need? Email us or .

Are you a product studio or a FlutterFlow agency?
A mobile product studio: we design, build, and launch iOS + Android apps for founders, and pick the stack per product — Flutter, SwiftUI, React + Capacitor, or FlutterFlow. We're also an Official FlutterFlow Partner, so when FlutterFlow is the right tool you get people who know it inside out. It's one of our stacks, not the whole studio.
Do you build web apps and websites, or only mobile apps?
Both. Mobile is our specialty, but we also build web apps — SaaS, dashboards, admin consoles, portals — and websites, including web-only and website-only projects. We also build AI features and real-time AI voice agents.
Can you fix an app rejected or suspended by Apple or Google?
Yes. We read the notice, fix the code, metadata, and policy gaps behind it, and handle the resubmission or appeal — and we get approvals for tricky categories like health, finance, user-generated content, and subscriptions. Nobody can guarantee an approval, but we address every issue Apple or Google raises. App Store rejection rescue.
What is a FlutterFlow Partner Agency?
FlutterFlow vets partner agencies based on real builds launched, code quality, and client outcomes. Partner agencies get a direct line to the FlutterFlow team, early access to platform features, and a public listing that's reviewed annually. LunarBuild is an official FlutterFlow Partner Agency — see our FlutterFlow listing.
Do you only build in FlutterFlow, or do you also write custom code?
Both. FlutterFlow is the fastest path for the visible 80% of an app: screens, navigation, theming, and stock integrations. The other 20% — custom widgets, native modules, complex Stripe or Supabase wiring, performance tuning — we write in Dart, Swift, or Kotlin and plug straight into the FF project.
Why FlutterFlow instead of plain Flutter?
When the visible part of the app is largely standard, FlutterFlow gets you to a working build in days instead of weeks. You still own real Flutter code (we export and version-control it), but you skip the early scaffolding work. For apps that are mostly novel UI or heavy native, plain Flutter is sometimes a better fit — and we'll tell you so on the call.
When is FlutterFlow the wrong choice?
When the app is mostly bespoke graphics, real-time games, AR, or heavy on-device ML. We'll say so on the intro call instead of selling you something we know will fight us later. In those cases we either build in plain Flutter or recommend native.
What do you hand over on Day 14?
Signed iOS .ipa and Android .aab, the FlutterFlow project transferred to your account, the exported Dart code in a GitHub repo on your account (we push to it from Day 1, not Day 14), App Store and Play Store listings drafted, plus a handoff Loom and a one-page architecture doc. No license fees. No platform lock-in. Nothing held hostage.
What if I don't want FlutterFlow? Can you build plain Flutter or native?
Yes. We default to FlutterFlow because it's the fastest path for ~70% of the briefs we get — but plain Flutter, native Swift, and native Kotlin are all on the table when the app calls for it (real-time games, AR, heavy on-device ML, deeply bespoke graphics). Same 14-day first milestone, same fixed quote in 24h, same Friday Loom cadence either way. We'll tell you which tool we'd pick — and why — on the intro call.
Can you fix or scale an existing FlutterFlow project I already have?
Yes. We start with a 2–4 hour FlutterFlow audit and give you a written report on what's healthy, what's risky, and what we'd change. From there we scope a rescue, a custom-code retrofit, or a clean migration. Most stuck FF projects need three things: a real backend layer, a few targeted custom widgets, and a small native bridge.
How does pricing work?
Projects start at $5,000. You get a fixed quote, in writing, within 24 hours of the intro call — once we've walked through scope, platforms, and timeline. One number that doesn't move, paid per milestone. No retainer fees, no hourly bait-and-switch, no "kickoff fees." You walk away with a written scope doc either way, even if you don't move forward with us. See how pricing works →
How is LunarBuild different from a freelancer on Upwork or Toptal?
Three things: Official FlutterFlow Partner status (vetted by FF itself), a fixed 14-day timeline with milestone payments instead of hourly billing, and a real handoff — signed builds, FlutterFlow project transferred to your account, exported Dart code in your GitHub repo, plus a written architecture doc. A great freelancer can match the build quality. The vetting, the timeline guarantee, and the handoff process are what an agency adds.
What's the difference vs a no-code agency (Bubble, Glide, Adalo)?
We produce a real Flutter codebase the client owns and can keep building on — in Dart, on GitHub, ready to ship to the App Store and Google Play as native binaries. Bubble / Glide / Adalo lock you into their hosted runtime, which is fine for internal tools but a problem for a consumer app that needs to scale, accept App Store payments, or hire iOS engineers later. FlutterFlow is the "no-code experience, real-code output" middle ground.
Why pick LunarBuild over a generalist full-stack consultancy?
Two reasons. Timeline: a two-week first milestone instead of a two-month "discovery + design + scope" phase. Depth: a generalist consultancy can usually build a Flutter app, but they rarely have senior engineers across Flutter, FlutterFlow, and native in-house to make the right stack call up front and write the native bridges later. If your app is mostly novel architecture (not a mobile MVP), pick a consultancy. If it's a mobile MVP that needs to ship, pick us.
Do you do FlutterFlow audits? What do they cost?
Yes — and they're free. We spend 2–4 hours in your FlutterFlow project and send a written report on what's healthy, what's risky, what we'd change, and a remediation roadmap. No requirement to book a follow-on build. About a third of audit clients pick a different team for the follow-up work, and that's fine. How the audit works →
Where are you based? What time zones do you work in?
Remote-first, global. We schedule intro calls across US, EU, and APAC time zones — pick whatever slot works on the booking calendar. Project comms are async-first: daily Slack/Discord standups and a Friday Loom recap, so overlap windows don't bottleneck the build.