iOS and Android app development services
We build iOS and Android apps for product teams, from field tools to companions for an existing platform. We choose native or cross-platform delivery around device requirements, offline use and the work of maintaining each release.
01Capabilities
Four mobile jobs, and what each does to the platform choice
We build mobile apps around the job they do on the device. Audience, connectivity and hardware requirements shape the platform decision.
- Field
Field and operations apps
Apps used by drivers, technicians and warehouse staff, often offline-first, as in our logistics and transportation work. We design and test disconnected workflows and sync conflict resolution around the work users need to complete.
- Companion
Companion apps for an existing platform
A mobile surface onto a system that already exists on the web. We define the API contract and what users can do while disconnected, so the app and the existing platform have clear responsibilities.
- Rebuilds
App assessment and modernization
We assess existing apps through store review history, crash data and architecture. The recommendation defines what to retain and what to change. Targeted repairs run as mobile app development against the existing codebase.
- Hardware
Device and hardware integration
Bluetooth peripherals, NFC and RFID, cameras and location. We check the device SDK, framework plugin or native module before choosing the implementation, including who maintains that integration as the platforms change.
02Case studies
Two mobile systems we took to both stores
Our logistics work includes customer and dealer apps on iOS and Android. In building security, we contributed mobile features and improvements that reached production.
See all case studies- LogisticsA freight-management platform and mobile apps for a US logistics startup (Mover Technologies)
- SecurityiOS and Android apps for a building-security software companyunicrew contributed to the iOS and Android apps of a security software company, built on its existing web client, through to the production release.
03Fit
Native, cross-platform, or mobile web
We choose the mobile implementation around the audience and the work the app must do. Device requirements and team responsibilities shape the recommendations below.
| Your situation | What we recommend |
|---|---|
| Heavy device integration: Bluetooth peripherals, camera pipelines, background location | Assess native integrationWe check SDK and plugin support, profile the device work and define who maintains platform-specific code. Swift and Kotlin fit where direct platform integration serves the product. |
| Mostly forms, lists and API calls, wanted on both platforms, built by one team | Cross-platformFlutter or React Native can share screens and API workflows. We still plan platform-specific modules and separate store releases. |
| You already run a strong React and TypeScript team on the web | React NativeA React Native build can use those skills across web and mobile. We assess native module needs and mobile release ownership before committing. |
| A bespoke interface that must look identical on both platforms | FlutterWe assess Flutter for a shared interface, alongside the device integrations and platform-specific behavior the app needs. |
| One platform carries almost all of your users today | Start with that audienceWe scope the first platform around current users and plan how a second would arrive. Native or shared code depends on device requirements and plans for the second audience. |
| Users need the existing web workflow on a phone | Mobile webWe deliver a mobile web experience when it meets the workflow. Before adding a store app, we assess device access, offline behavior and distribution needs. |
Scope
We own the platform recommendation, the release plan and the maintenance responsibilities that follow. That includes defining shared code and platform-specific work before estimating delivery. unicrew has built software since 2012, with 100+ senior in-house engineers across six countries. Our work runs under an ISO 27001:2022 certified information-security management system.
The biggest decision in mobile is how you support the second platform. Wherever both platforms have a real audience, we plan for iOS and Android together from the start, and every release after that ships faster.
Andrii BurdaSenior Engineering Manager, unicrew04Delivery
How the second platform actually arrives
We plan iOS and Android together, including the work that stays specific to each platform.
- Read the crash data and the reviewsFor an existing app, we inspect crash-free rate by version and device alongside store review history. We use this evidence to focus the architecture assessment on the affected releases and devices.
- Map the API contractWe map what the app sends, retrieves and retains while disconnected. We inspect payloads and pagination, then assign work to the mobile client or backend according to the cause.
- Decide rebuild versus repair, in writingWe document the recommendation and its reasoning. The plan identifies what to retain or change, which code can be shared, and who owns each platform's releases and maintenance.
- Ship through both stores earlyWe plan an early submission to the App Store and Play Store, with signing, disclosures and device testing covered by our QA and test automation practice. OS permissions, background scheduling and review rules apply to native and shared implementations.
05Client voices
Two clients on the mobile work
I’m consistently humbled by Artelogic’s performance. Projects of this caliber are hard to outsource. Teams come and go, and this type of work almost never gets done. They’ve kept their priorities straight as they’ve grown and always deliver.
The project led to the release of our production apps and a prototype showcasing new features. They were reliable, responsive, and consistently addressed our needs very well. We were impressed by their strong technical and interpersonal skills and how smoothly they adapted to our team, processes, and product.
06Stack
Mobile technologies for iOS and Android
Native languages, shared frameworks and older iOS code each have a place in the implementation plan.
07Questions
Questions about running two platforms
Running iOS and Android involves code-sharing choices and a release process for each store.
Yes. Our mobile engineers take responsibility for the agreed iOS and Android work within your product process.
An architect outside the delivery team reviews the design under our QA and test automation practice. A managed development team includes unicrew delivery coordination; mobile app development covers delivery of the agreed app outcome.
Both iOS and Android apps can be developed together using native codebases or a cross-platform framework.
We choose the split by testing device integrations and offline behavior against each platform's limits. Shared apps can still need native modules; two native clients still need coordinated API contracts and release plans. The comparison includes ongoing maintenance, alongside the first build.
Yes. We handle App Store and Play Store submission.
- Signing and provisioning.
- Privacy declarations and data-collection disclosures.
- Review submissions and responses to rejections.
We work in your existing store accounts and release process. Each store decides approval against its rules; the implementation language or framework does not bypass those requirements.
We decide from the crash data and architecture, then give you a written recommendation.
Crash-free rate by version and device shows where failures occur. We compare targeted repairs with the changes a rebuild would require, including whether the existing architecture supports a safe fix.
Start with a scoping call with an engineer.
For an existing app, share the repository and crash reporting. For a new product, describe its audience, device integrations and offline requirements.
You receive a written recommendation on native versus cross-platform, or on rebuild versus repair, with the reasoning. Most engagements start within two to four weeks.
We quote iOS and Android work against its scope and engagement model.
- Time and materials: billed hourly, quoted per project.
- Fixed price: outcome based, quoted per project.
- Team extension: billed monthly per team member.
We agree the model after defining the platform and release responsibilities.
Plan your iOS and Android release
Tell us who uses the app and what it needs from the device. We will recommend a native or cross-platform approach, with the release and maintenance responsibilities set out.