Mobile App Development Services that Drive Retention

We deliver mobile application development services for iOS and Android that improve retention in the first 30 days after install by reducing crash risk, app QA and testing, and accelerating time-to-value in key flows.

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Mobile App Development Services Recognized by the Industry

Reviewed on
5.0
Top rated
5.0

Companies We’ve Helped Succeed

Flowmingo
Cortex
RevivX Hub
Blends
Azure Biosystems

What Makes Darly Solutions a Trusted Custom App Development Company

up to
1.4x

30-day retention uplift in key flows thanks to our services

98%

of our clients would recommend Darly Solutions to their peers

100+

startups have trusted us with their products

96%

of projects meet predefined budget constraints

5.0

rating on Clutch proving our dedication to excellent service

Custom Mobile App Development Services We Offer

Solutions include:

Mobile app strategy and scope cut for first release

Clickable prototype + release plan for MVP mobile development

Analytics-ready activation path and “aha” definition

Solutions include:

iOS development and Android development delivery plan

Architecture and release setup for predictable iteration

Store readiness: performance, stability, and launch checklist

Solutions include:

Faster app launch and screen load time in key scenarios

Smooth interaction patterns for data-heavy screens

Custom improvements for real-device performance

Solutions include:

Crash and ANR root-cause analysis by flow and device segment

Stability fixes tied to retention and store ratings

App modernization for unstable modules and release safeguards

Solutions include:

App QA and testing for critical user flows

Regression suite for releases and hotfix readiness

Crash/ANR monitoring and release quality gates

Solutions include:

Legacy code and release pipeline upgrades for faster iteration

App redesign for one retention-critical flow with delivery-ready specs

Design system components for consistent delivery

Solutions include:

Multi-module mobile apps with scalable data and integrations

Healthcare and fintech app development for high-trust flows: scheduling, payments, operator reviews

Agile app development with release automation, crash monitoring, and quality gates

Solutions include:

Activation funnel mapping and event taxonomy

Feature-level retention analysis for key actions

Insights from analytics + support tickets + session recordings

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Speed Up Releases in Your App

Mobile app development solutions focused on the core user journey from first action to repeat use.

Daria Lalaiants
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Daria Lalaiants

CEO at Darly Solutions

Our Mobile App Development Process

00

Pre-Call Audit

Before the first call, we review the app, core flows, crash signals, and product analytics. The conversation starts with context and clear inputs.

01

The First Call

We align on goals, constraints, platform scope (iOS/Android), and success metrics. You leave with a concrete next step and a realistic plan.

02

Flow and Release Scope

We map retention-critical flows and define the smallest release that moves a measurable metric. The outcome is a prioritized scope tied to activation, retention, or completion.

03

Build and QA in Parallel

We implement the scope and run app QA and testing on real devices, keeping quality and progress visible as the product moves toward launch.

04

Launch Readiness

We prepare the app for launch with a rollout plan, monitoring, and quality gates. You see exactly what’s ready, what’s next, and what’s shipping.

05

Post-Launch Support

We stay involved after the launch, watching stability, speed, and key funnels, then shipping focused updates that strengthen retention and reduce support volume.

Future-proof Your Mobile App With Modern Architecture

We make iteration predictable, sessions stable, and sensitive data secure by making the right architectural decisions at the very outset.

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Technologies That Power Our Custom Mobile Applications

We help startups and enterprises embed cutting-edge technologies into their mobile apps — without compromising scalability, performance, or security.

Generative AI & LLMs

Add a personal assistant to your mobile app. We integrate third-party LLMs like OpenAI’s GPT, add RAG layers for business-specific responses, and protect your data and user privacy.

AI/ML

Turn AI/ML features into your unique value proposition. We develop and train custom AI/ML models to serve personalized recommendations, detect fraud, translate in real time, and more.

Connected devices

Make your mobile app part of everyday connected experiences. We integrate mobile apps with fitness trackers, smartwatches, vehicles, appliances, smart home systems, and more.

Big data analytics

Transform raw app data into insights you can act on. We’ll set up data pipelines to collect and store big data and analytics to make sense of it at scale.

Internet of Things (IoT)

Enable on-the-go access to IoT sensor data with mobile apps built for field use. We’ll adapt to your preferred connectivity options (Wi-Fi, Bluetooth, Zigbee, 4G/5G) and implement edge computing.

Augmented reality (AR)

Create even more immersive experiences with AR-powered features. Whether you want to add smart camera filters, virtual try-ons, or home improvement previews, we have you covered.

Cloud-native services

Leverage instant scalability without unpredictable cloud costs or manual server management. We set up orchestration, containerization, and serverless functions to optimize performance and costs while ensuring an excellent user experience.

Computer vision

Make users’ lives even easier with real-time image recognition and intelligent automation. We implement both user-facing features like barcode scanning and backend logic for content moderation or face detection.

Compliance & Certifications We Follow for Secure Mobile App Development

GDPR

GDPR

CCPA

CCPA

HIPAA

HIPAA

PIPEDA

PIPEDA

ISO/IEC 27001

ISO/IEC 27001

DPDP Act, 2023 (Data Protection Bill India)

DPDP Act, 2023 (Data Protection Bill India)

PCI DSS

PCI DSS

PSD2

PSD2

EMV & 3DS

EMV & 3DS

SO/IEC 9001

SO/IEC 9001

ISO/IEC 27018

ISO/IEC 27018

SOC 2 Type II

SOC 2 Type II

FISMA

FISMA

NIST Cybersecurity Framework

NIST Cybersecurity Framework

OWASP Mobile Security Testing Guide

OWASP Mobile Security Testing Guide

ISO 13485

ISO 13485

Google Play Store Guidelines

Google Play Store Guidelines

Apple App Store Guidelines

Apple App Store Guidelines

OWASP

OWASP

W3C

W3C

Mobile Features We Bring to Life

Offline modes, in-app messaging, geofencing; you name it, we’ve done it. Here are just some of the mobile app features we can add to your product.

Multi-factor authentication and Single Sign-Ons

Accessibility features (WCAG, ADA, etc.)

Cross-device cloud sync with conflict resolution

Smart recommendations

Offline functionality

Voice assistance and hands-free interfaces

Push notifications

Location-based features (GPS, Wi-Fi triangulation, geofencing, etc.)

User feedback loops (bug reporting, feature suggestions, ratings)

User login and onboarding

Multi-language UIs and support

Personalization and customization features

AI-powered chatbots and self-service support

In-app messaging and social features (comments, posts, reviews)

In-app payments and subscriptions with multiple payment gateway support

Loyalty and rewards programs

Social media integration

Dark mode

Gamification elements (points, badges, trophies, levels, achievements)

Integration with smartwatches and other wearables

Our Tech Stack: Mobile Applications Edition

Every technology choice has its trade-offs. We bring our expertise to help clients make the right decision based on their growth trajectories, constraints, and business objectives.

Native mobile apps

Native mobile apps

Cross-platform & hybrid mobile apps

Backend technologies

Data management

Cloud infrastructure

CI/CD & DevOps

Security & identity management

Analytics & performance monitoring

Integrations

Kotlin

Objective-C

Swift

Java

Flutter

Dart

React Native

TypeScript

Capacitor

Ionic

Redux

Angular

Node.js

Python

PHP

Laravel

Ruby on Rails

.NET

ExpressJS

PostgreSQL

NoSQL

MongoDB

MySQL

SQLite

Supabase

AWS

Microsoft Azure

Google Cloud Platform

DigitalOcean

Hetzner

GitLab CI/CD

Docker

CircleCI

Fastlane

Jenkins

OAuth 2.0

Auth0

AWS Cognito

AWS Cognito

Biometrics (FaceID/TouchID)

OpenID Connect

Firebase

Google Analytics 4

Stripe API

Google Pay

Apple Pay

OpenAI API

Plaid

Dropbox Sign

Twilio

How Our Mobile App Development Services Make a Difference

Mobile App

Health Insurance Enrollment Platform: From Zero to Scalable Product in 6 Weeks

Mobile App

Smart city mobile app: Speeding up time-to-market by 37% with a cross-platform tech stack

Mobile App

Carnivore diet app: Securing a 54% DAU:MAU ratio with engagement-driving user flows

What Clients Say About Our Mobile App Development Company

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We successfully launched a hybrid mobile app that now reaches a much wider audience. Updates that previously took days or even weeks with our native setup can now be deployed in hours.

Dennis Geerts
CTO, Give a Day CV with Social Purpose
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Because the scope of the project was so vast in the beginning, it was difficult to define delivery times. The team always communicated honestly and openly about any delays.

Andrea Hartley
CEO, Flowmingo
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Darly Solutions’ involvement improved user experience and helped implement complex features. Quantitative results: 50% higher daily active users, 50% higher customer adoption, 20% higher customer satisfaction.

Roman Fernandez
Managing Director, Shala UG
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Darly Solutions were/are a great partner of ours, and we will continue to build our relationship on future projects.

Colin D. Moore
CEO, Flying V Labs
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Our lead generation process became 27% faster, and client engagement increased by 35% thanks to the intuitive interface. We also saw a 22% revenue increase.

Marketing Manager
B2B Lead Acquisition Agency
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They meet our deadlines and are very accurate with their time estimations on a project. In addition, they're responsive, and it's very easy to talk to them.

Felix Leontyev
Head of Technology, PSS AG

Connect with us

At this stage, we get acquainted with your needs, outline the goals and desired results. We are always happy to take your project to the next level, and then beyond
Darly Solutions Team

We are a tech partner that delivers ingenious digital solutions, engineering and vertical services for industry leaders powered by vetted talents.

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Our solutions improve 7- and 30-day retention by making core journeys faster and more reliable. Fewer crashes and ANRs, clearer states and notifications, and a shorter time-to-value help more users reach their first success and stay active longer, thus making acquisition more cost-effective per active user.

A development company gives you a single delivery line for mobile app strategy and development, with ownership across design, build, and release readiness. That keeps planning and execution connected, speeds up launch decisions, and reduces handoff overhead.

Our services focus on what affects early retention: stability in real usage, speed in key screens, and predictable releases. We align agile app development with measurable metrics like activation, completion in critical flows, store ratings, and cost-to-serve.

Yes. We start by reviewing performance, crash/ANR signals, retention funnels, and store reviews, then propose an app redesign or modernization that prioritizes the flows that drive revenue and churn. This approach targets the changes that matter the most and keeps the roadmap clear.

The cost depends on flow complexity, platforms, integrations, and the depth of MVP mobile development or production-grade scope. MVPs are often priced at $10K–$30K, while products with domain constraints — e.g., healthcare, fintech, and enterprise mobile apps — often start at $40K+ due to compliance requirements and multi-role workflows.

Most releases follow the same pattern: define scope, build, test, ship. An MVP usually takes 8–12 weeks to reach the App Store or Google Play. Smaller iterations on existing mobile apps often run in 3–6 week cycles when the scope stays tight.

We need your product goal, target users, the platform scope, and key constraints (timeline, integrations, compliance). If you already have anything — a prototype, designs, requirements, or analytics — share it, too. We also need points of contact from product and engineering to keep decisions and delivery aligned.

We align on priorities, shape release scope, and deliver work in sprint cadence with clear checkpoints. Your team keeps ownership of product decisions and integrations; we handle development and keep delivery connected across discovery, build, and release.

Our cost estimates depend on the flow count and complexity, platform scope, integration volume, and release requirements. We capture new items in a separate list, then update scope and timelines before the next sprint plan. So, delivery stays predictable.

Small copy and UI adjustments usually fit the final buffer. Changes that affect flow logic, security, or retention-critical paths become a separate iteration under our service plan, so timelines and budget stay transparent.

Yes. UI/UX design is part of our mobile application development services, including design for onboarding, payments, dashboards, and daily workflows. We deliver designs with handoff specs that support clean implementation.

Mobile usability testing puts real users on real devices and networks to complete real tasks while we observe where time increases, steps become unclear, or errors appear. It highlights issues that affect first sessions and early retention before growth spend scales.

Yes. We provide the following ongoing services: crash/ANR monitoring, performance tuning, iOS/Android updates, and small releases that keep the product stable as usage grows.

Yes. We combine funnels, retention, store reviews, and support tickets with user feedback, then validate changes through app QA and testing and sequential releases. This turns insights into solutions that improve retention and ROI step by step.

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