Flutter · iOS · Android · ASO · Firebase

MVP to
App Store.
In 90 Days.

Cross-platform Flutter development with App Store Optimisation, retention mechanics, and growth analytics wired in from sprint one. Not just a build — a launch strategy with growth built in.

88d
Fastest Build
MVP to App Store
50K
Downloads Day 90
FitTrack launch
62%
Day-30 Retention
3× industry avg
Flutter app development: code editor showing FitTrack development with mobile app interface displaying 50,000 downloads and #1 Health & Fitness App Store ranking

App Dev Services

We Build Apps That Grow.
Not Just Apps That Work.

Most app agencies deliver a working build. We deliver a launch-ready growth machine — with ASO strategy, analytics architecture, and retention mechanics included from sprint one.

Flutter Cross-Platform

Single codebase, native iOS and Android performance. 40–60% faster build time. We don't pad budgets with separate native builds unless genuinely required.

ASO-First Architecture

App Store Optimisation built in from sprint one: keyword-optimised title, subtitle, description, screenshots, and preview videos. Not an afterthought after launch.

Firebase Analytics

Full event taxonomy designed before a line of code is written. Funnels, retention cohorts, push notification strategy, and A/B testing framework all in place at launch.

Retention Mechanics

In-app referral loops, push notification sequences, and Day-7, Day-30 re-engagement flows. FitTrack's 62% Day-30 retention (industry average: 21%) came from mechanics built pre-launch.

App Store Submission

Complete submission management: metadata, screenshots, App Privacy questionnaire, review guidelines compliance, and expedited review requests when needed.

Post-Launch Support

30-day post-launch sprint: live crash monitoring, user feedback integration, App Store review management, OS compatibility patches, and optimisation from real usage data.

Case Study — Health & Fitness App

FitTrack: 50,000 Downloads in 90 Days Post-Launch

FitTrack had a validated concept but a freelance development relationship that had stalled after 4 months with no working prototype. They had no technical team, no ASO strategy, and no analytics framework. They needed a build partner who thought like a growth team.

Discovery sprint and Flutter architecture in week one. ASO keyword strategy built into the app title, subtitle and description from sprint one. Firebase event taxonomy designed before coding began. Retention mechanics, push notification sequences, and Day-30 triggers all implemented before beta. Submitted on day 88.

50K
Downloads Day 90
#1
Health & Fitness
62%
Day-30 Retention
Read Full Case Study
FitTrack Health app development case study: 50,000 downloads in first 90 days, #1 Health and Fitness App Store ranking, 62% Day-30 retention rate

Our Process

From Concept to App Store in 90 Days

01

Discovery Sprint

User stories, architecture design, API specification, ASO keyword research, and analytics event taxonomy. Week one deliverable: a fully signed-off technical spec.

02

Build & Test

Flutter development with weekly demo builds, continuous integration, and user testing from week 4. You see the app growing every week — no 3-month black box.

03

ASO & Pre-Launch

App Store listing optimisation, screenshot design, preview video, keyword testing, and pre-launch TestFlight/beta distribution to build initial review velocity.

04

Launch & Scale

App Store submission, launch-day push, paid user acquisition (if in scope), crash monitoring, and 30-day post-launch sprint with real user data.

FAQ

App Development Questions

Flutter delivers near-native performance with a single codebase for both iOS and Android. This means 40–60% faster development time and lower cost without compromising on user experience or performance. For most consumer and B2B apps, Flutter is the right default choice. We only recommend native development for apps with very specific platform-exclusive hardware requirements.
A standard engagement covers: discovery sprint (user stories, architecture, API design), Flutter development, UI/UX design, Firebase analytics implementation, ASO keyword strategy, App Store and Play Store submission, 30-day post-launch support, and a documented handover package. Scope varies by complexity.
Our FitTrack MVP was submitted in 88 days from kickoff. Most consumer app MVPs take 60–100 days depending on complexity. Feature-rich enterprise apps typically run 4–6 months. We provide a detailed timeline in the discovery sprint.
ASO is the process of optimising your App Store and Play Store listings to rank higher in search results and category charts. It covers keyword strategy in the title and subtitle, screenshot design, preview video, and review management. FitTrack reached #1 in Health & Fitness primarily because of ASO strategy built into the app from day one — not added after launch.
Yes. We offer monthly app maintenance retainers covering OS update compatibility, crash monitoring, Firebase analytics review, push notification strategy, and App Store review response management. Post-launch support is where most agencies disappear — we stay.

Have an App Idea? Let's Build It Right.

Free discovery call. We'll review your concept, advise on technology stack, and give you a transparent timeline and estimate. No obligation.

Fixed-price builds available 90-day delivery milestone 30-day post-launch support