Mobile app development services

Your users are on mobile — your product should be, too. We build fast, native-feeling apps that solve real problems and drive engagement.

Years of experience

Projects delivered

Types of Mobile App Development Services

Whatever stage you’re in — idea, launch, or cleanup mode — we provide apps development services that get things moving.

01 Cross-platform app development from scratch

02 Mobile app upgrades

03 API integration

04 App maintenance and support

05 Tech stack migration

Building two separate apps for iOS and Android can double your time, cost, and headaches, especially when you’re working with tight deadlines or a lean budget. In this case, going cross-platform is a smart decision, but without the right expertise, it often means performance trade-offs, clunky UX, or features that don’t feel quite “native.”

As a custom mobile app development company, we use frameworks like React Native to build cross-platform apps that look, feel, and perform like native products. Paired with backends powered by tools like Firebase or MongoDB, you get a unified codebase, faster time-to-market, and a consistent experience across devices without compromising on quality.

Your app is live — but the tech moves fast, user expectations evolve, and what worked a year ago might already feel outdated. Not keeping up with trends can lead to performance issues, clunky UX, and missing features. Upgrading without breaking what already works while keeping your roadmap (and users) on track comes as a hard part.

At Keenethics, we help level up your mobile app without starting from scratch. Our team of experts will take the time to review your existing software and modernize the product where needed. We take care of performance bottlenecks, outdated code, missing features, and UX gaps so your app stays smooth and always aligned with your growth.

When launching an application, it needs to connect with other services, tools, and platforms. But, integrating third-party APIs can quickly become complex due to inconsistent documentation, authentication issues, broken data flows, and unexpected bugs. When APIs fail, the entire user experience suffers.

To connect your platform to the tools it depends on, we implement third-party APIs and can build custom ones. Our mobile app services include the integrations of payment systems, CRMs, geolocation services, analytics, and more. We ensure everything works together reliably and securely so your product stays functional and future-ready.

Launching your app is just the beginning. Right after that, the big challenge appears when you need to keep your product up and running. Bug fixes, OS updates, security patches, and user feedback can pile up fast. Without consistent maintenance, performance drops, features break, and users bounce.

With the Keenethics team by your side, there’s no need to worry about glitches. We provide ongoing maintenance and support to keep your app secure, stable, and up-to-date. Our expert team handles the behind-the-scenes work, dealing with routine updates, issue tracking, performance monitoring, and more so you can stay focused on growth.

Maintaining separate codebases for iOS and Android can drain your budget, slow down development, and complicate every update. As your app grows, so does the effort to keep both versions in sync — and tech debt starts to pile up. Migrating to a cross-platform stack sounds smart, but the transition can feel risky without the right team behind it.

Apart from offering mobile app development solutions, we also help you migrate to modern cross-platform frameworks like React Native, giving you one codebase to maintain and the flexibility to scale faster. Our team carefully analyzes your existing architecture, features, and user flows to ensure a smooth transition.

Types of Projects

We break down your idea and build something that delivers real results.

MVPs for startups

Every great product starts with a clear idea and a big question: will users actually want this? That’s where an MVP is a smart move that balances speed, budget, and core functionality. We help startups move from raw concepts to working mobile apps without compromising on user experience. From day one, we focus on what matters: clean architecture, intuitive UX, and just enough features to test, pitch, or launch with confidence.

On-demand service apps

When users want something now, your app has to deliver it without friction. Booking a ride, scheduling a cleaner, or ordering takeout must leave zero room for slow load times or clunky UX. Recognizing this, we build on-demand platforms that handle real-time requests, live tracking, secure payments, user-to-provider communication, and more. With everything needed in one place, your app will provide a smooth, scalable flow.

Progressive Web Apps (PWAs)

Sometimes, the best mobile experience doesn’t come from the App Store. PWAs bring the feel of a native app — fast, responsive, and installable — right through the browser. They’re perfect for products that need reach and flexibility without downloads or store approvals. At Keenethics, we build PWAs that load instantly, work offline, and keep users engaged with features like push notifications and background sync.

Companion apps

Companion apps are great for keeping users connected, informed, or in control no matter where they are. They may not be the core product, but when done right, they’re essential to providing the full experience. Our Keenethics team is here to provide app development solutions that deliver real-time data, sync with external devices, and complement a web platform. This way, you always stay fast, in sync, and in context.

Internal business applications

Behind every great product is a team that needs the right tools to operate efficiently. Whether it’s managing inventory, tracking performance, handling workflows, or syncing data across departments — internal apps are the backbone of daily operations. So your team can focus on what really matters, we design and build mobile solutions tailored to your in-house processes, making routine tasks faster, cleaner, and easier.

The Real Impact We’ve Delivered

We’ve built a wide range of digital solutions, helping businesses reach their goals. Your success story could be next.

Offerin

Real Estate

Offerin aims to optimize offer management processes for real estate agents in Ohio, US, taking the most minute details of local legislation into consideration.

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GetPart — A B2B Cloud-Based Procurement Platform For On-Demand Manufacturing

Procurement

GetPart is an Estonia-based procurement platform for on-demand manufacturing aimed at making the procurement of various metal components simple, safe, and efficient.

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StoryTerrace Bookmaker

Media & Publishing

Bookmaker is an AI-based book publishing platform that helps its clients create their own books online together with a competent in-house editorial team.

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Oplanto

Manufacturing

Oplanto, or Optimus Planto, is a platform that simplifies 3D printing management by offering a marketplace for 3D printing designs and tools for creating new instruments in the biomedical sphere.

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ADS

Manufacturing

ADS is a leading Ukrainian manufacturer of aluminum decorum systems, which prides itself on providing a wide range of high-quality products and a flexible customization service that allows creating unique furniture.

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Ruuster

Real Estate

Ruuster is a user-friendly tool designed to simplify the home-buying process for clients, helping them secure the home of their dreams.

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uMore

Healthcare

uMore is an AI tool that helps users track their well-being and build positive habits. Its main functions are "Catch, Check, and Change.”

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Brainable

Education
Entertainment

Brainable is a website that offers more than 20 brain-training games, allowing its users to combine entertainment with significant cognitive health improvements through regular 15-minute exercise sessions.

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SelfLeaders

Education

SelfLeaders is a Swedish coaching company that helps its clients (both corporate and non-corporate) improve their self-leadership skills.

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Check the Cases

Portfolio

Our Development Tech Stack

Every tool in our stack is chosen to match your goals, your users, and your growth plans.

Steps to Kickstart Your Project

We follow a comprehensive approach:

Step 1: Discovery & NDA

We start with a quick intro call to understand your goals, expectations, and vision. If needed, we’ll sign an NDA to keep things confidential from day one.

Step 2: Project Analysis & Q&A

Our team examines your project scope, asks smart questions, and clarifies core functionality so we can build a proposal that’s clear, sharp, and tailored to your needs.

Step 3: Proposal & Roadmap

We map out the full journey — timeline, scope, team, and solution highlights — wrapped in one detailed, easy-to-read proposal document.

Step 4: Proposal Review & Feedback

We walk you through the proposal, answer your questions, and make adjustments as needed to make sure we’re 100% aligned before moving forward.

Step 5: Agreement & Team Allocation

Once the proposal is approved, we finalize the agreement and handpick the best-fit team with the experience your project demands.

Step 6: Kickoff Meeting

Now, meet your project team, align on next steps, and officially kick things off. From here — it’s go time.

If you are not sure, share your thoughts with us

FAQ

Can you assist with refining my app idea before development begins?

Absolutely. We collaborate closely with you during the discovery phase to validate and refine your concept, ensuring it aligns with market demands and has a clear roadmap for development.

How do you approach post-launch app analytics and improvements?

Our mobile application development services also include monitoring user engagement and feedback using advanced analytics tools. With this data-driven approach, we make informed updates, enhance features, and address any issues to continually improve your user satisfaction.

How long does it take to build a mobile app?

It depends on the complexity and scope — but most projects take anywhere from 2 to 6 months. MVPs with core functionality can be launched faster, while custom or enterprise-level apps with complex features may require more time. After an initial call with us, you’ll get a clear timeline tailored to your project.

How much does it cost to build an app?

There’s no one-size-fits-all price. The cost depends on the feature set, platform(s), integrations, and design complexity. That said, full-scale custom app development typically starts at $10,000. We’ll walk you through a detailed breakdown during the proposal stage with full transparency, no hidden fees, and room to scale as you grow.

Why choose Keenethics mobile app development services?

We offer lower costs without cutting corners, thanks to efficient workflows and smart technology choices. Our team delivers top-tier quality — experienced engineers, designers, and strategists who treat your product like their own. And we’re in it for the long haul, providing mobile application development solutions with ongoing support to help you grow, iterate, and improve after launch.

Is cross-platform app development the same as hybrid app development?

Not exactly. While both approaches aim to work across platforms, cross-platform apps offer better performance, closer-to-native UX, and access to native APIs. Hybrid apps typically use web technologies inside a native wrapper, which can lead to limitations in performance and user experience.

Absolutely. We collaborate closely with you during the discovery phase to validate and refine your concept, ensuring it aligns with market demands and has a clear roadmap for development.