Compatibility Testing Company

Compatibility Testing Services for Your User Base

Our compatibility testing services check your mobile app and website on real Android and iOS devices, OEM skins, OS versions, browsers and screen sizes, chosen from where your users are, and run in parallel with AI-powered automation.

Real Android and iOS devices
OEM and platform readiness
Browser, OS and resolution coverage

Clutch 4.9 Verified client reviews 4.7 76 Google reviews

The same web app open on a desktop monitor, laptop, tablet and smartphone on one desk

Real Android & iOS devicesIn-house device farm Every major browserWindows · macOS · Android · iOS

Trusted by global product and engineering teams

Real Device Testing

Real Devices, Chosen From Your Audience

Emulators cannot show how your app behaves on a real Samsung, Xiaomi or iPhone. Our compatibility testing services sign off on real devices, and pick the ones your users actually have.

How we build your device matrix

Your analyticsDevices, OS versions, browsers and screens in use

Your marketsOEM and OS share in each region you serve

Your releasesLaunch markets and upcoming OS updates

Tier 1Devices covering most of your usersEvery build
Tier 2Wider OEM, OS and screen spreadEvery release
Tier 3Long-tail, low-end and OS betasPeriodic

Where we test

In-house device farm

Physical Android and iOS devices in our lab, for tests that need real hardware: cameras, biometrics, battery, push notifications and live networks.

Cloud device platforms

Wider device and browser reach on demand, using your accounts or ours.

BrowserStackLambdaTestSauce LabsAWS Device Farm

Four smartphones on a table, each showing a mobile web page

Mobile App Compatibility

We Go Beyond OS Versions

Two phones on the same Android version can behave very differently. As a compatibility testing company, we test for the manufacturer and platform differences that break apps in the real world.

OEM skins

One UI, HyperOS, ColorOS and Funtouch OS change background limits, battery rules and permission dialogs.

Screens and form factors

Notches, punch-holes, Dynamic Island, foldables, tablets, display scaling and font size.

Hardware differences

Cameras, biometrics, chipsets and low-RAM devices that respond differently.

Platform readiness

New iOS and Android betas, privacy changes and Google Play target API levels.

What We Cover on Mobile

Every Behaviour That Changes From Device to Device

Compatibility is more than the app opening. Our mobile compatibility testing services check the features most likely to behave differently across devices, OEMs and OS versions.

Network Testing

Wi-Fi, 4G, 5G and weak signal, network switching, offline mode and recovery.

Interruptions

Calls, alarms, backgrounding, rotation, split screen and app lifecycle events.

App Store Readiness

Google Play and App Store guidelines, privacy labels, data safety and release builds.

Permission Testing

Allow, deny, "only this time", revoked permissions and Android 13+ notification consent.

Battery Testing

Drain over long sessions, background usage, Doze and Low Power Mode behaviour.

Memory Testing

Low-RAM devices, leaks over long sessions and apps killed and restored by the OS.

Deep Link Testing

Universal links and App Links, deferred links, campaign links, installed or not.

App Upgrade Testing

Upgrades from older versions, data migration, forced updates and fresh installs.

Push Notifications

Delivery in foreground, background and killed states, OEM restrictions and tap-through.

Web Compatibility

Every Browser, OS and Screen Resolution

Our web compatibility testing services cover the browser and operating system combinations your visitors use, at the screen sizes they view it on.

Layout shifting

Content that jumps as images, fonts or ads load.

Responsive layout

Grids, menus and tables at every breakpoint.

Rendering and fonts

Spacing, fonts and CSS that differ by browser engine.

Touch and hover

Menus and controls built for a mouse that fail on touch.

Forms and inputs

Date pickers, autofill, validation and payment fields.

Scripts and features

JavaScript and web APIs on older browser versions.

Media

Video playback, image formats and lazy loading.

Zoom and display

Browser zoom, high-DPI screens and dark mode.

Screen resolutionsFrom small phones to wide desktop monitors

360pxPhone
414pxLarge phone
768pxTablet
1024pxTablet landscape
1366pxLaptop
1920pxDesktop
2560pxWide screen

Browsers

Chrome · Safari · Edge · Firefox · Samsung Internet

Operating systems

Windows · macOS · Android · iOS · iPadOS

Versions

Latest, previous majors in use, and betas

AI-Powered Automation

One Test Suite. Every Device and Browser at Once.

We set up automation pipelines that use AI to speed up script development, then run every test case in parallel across all the device and browser combinations in your matrix.

AI-assisted script development

AI drafts scripts from your test cases and suggests fixes when locators change. Our engineers review every script.

Parallel execution

Runs on our device farm and cloud platforms at the same time, instead of one device after another.

Runs on every build

Triggered from Jenkins, GitHub Actions, Azure DevOps or GitLab CI, with screenshots, videos and logs for every failure.

Same suite, 6 configurationsIllustration of run time

One at a time6 runs back to back

In parallelAll 6 at once

iPhone 15 · iOS 18
Galaxy S24 · Android 14
Pixel 8 · Android 15
iPad · iPadOS 18
Chrome · Windows
Safari · macOS

Run time

The full device and browser matrix finishes in about the time of a single run.

AppiumSeleniumPlaywright

Usability Testing

Compatible Is Not the Same as Easy to Use

An app can pass on every device and still frustrate people on some of them. Our testers check how it feels to use, not only whether it works.

Touch targets and gestures on small and large screens
Readability with larger font sizes and display zoom
One-handed use of key actions on tall phones
Key journeys on low-end devices and slow networks
Platform conventions that iOS and Android users expect

A woman smiling while using an app on her smartphone at a cafe table

How It Works

From Your Analytics to a Release-Ready Report

Every compatibility testing engagement follows the same four steps, sized to your release cadence and the markets you serve.

Audience review

We study your analytics, markets and release plans.

Device and browser matrix

We agree the tiered matrix and what runs when.

Test and automate

Real-device testing plus parallel automation on every build.

Report and retest

Issues by device with evidence, then retests after fixes.

Client Success

Compatibility Testing in Practice

01 / 02

Two people comparing the same app on two smartphones at a desk

Telecommunication

Mobile app compatibility testing

Ensuring Seamless Mobile App Compatibility

With users spread across urban and remote regions, the client needed its app to perform consistently under varying network conditions, across many device models and OS versions.

Device coverage: 110+
Real-device execution: 100%
Tools integrated: 3

What We Delivered

Procured, set up and maintained every test device
Replicated real-world networks with fluctuating latency and connectivity
On-site testing at real locations, plus UI, performance and battery checks

Tools Used

JIRAZephyrConfluence

An employee taking an online training course on a laptop in a bright office

eLearning

Automation, functional and accessibility testing

Driving a Seamless and Compliant Learning Experience

A global enterprise solutions provider needed end-to-end QA for a compliance eLearning suite covering cybersecurity, phishing, harassment prevention and corporate ethics.

Test cases automated: 250+
Device combinations: 20+
Testing types: 3
Tools used: 6

What We Delivered

Manual validation of learner flows, from login to certificate
Automated regression for course workflows, assessments and compatibility
Accessibility testing for keyboard navigation, ARIA labels and screen readers

Tools Used

SeleniumJAWSARC ToolkitAxeTestRailBrowserStack

Common Questions

Compatibility Testing, Explained

Answers for teams planning device and browser coverage.

How do you decide which devices and browsers to test on?

We start from your analytics: the devices, OS versions, browsers and screen sizes your users actually have, and where they are. We add market share for your target regions and any launch markets, then group the combinations into tiers so the ones covering most of your users are tested on every build.

Do you test on real devices or emulators?

We focus on real devices. Emulators and simulators are only used for fast early checks. Sign-off happens on real Android and iOS devices, from our in-house device farm and from cloud platforms such as BrowserStack, LambdaTest, Sauce Labs and AWS Device Farm.

What OEM-specific issues do you look for on Android?

Manufacturer skins such as Samsung One UI, Xiaomi HyperOS, OPPO ColorOS and vivo Funtouch OS change how apps behave. Common issues are background restrictions that delay notifications or stop sync, battery optimisation that kills services, different permission dialogs, and layout changes from display scaling and font size settings.

Can you test our app on new iOS and Android versions before they launch?

Yes. We test on developer and public betas of new iOS and Android releases, check new privacy and permission rules, and confirm the app meets current Google Play target API level and App Store requirements, so a platform update does not break your app on release day.

How does AI help with compatibility automation?

AI helps our engineers draft automation scripts from manual test cases, suggest fixes for locators that change between devices, and group failures by likely cause. Engineers review every script and result. The pipeline then runs the suite in parallel across the full device and browser matrix.

Why choose Codoid as your compatibility testing company?

We test on real devices, from our in-house device farm and cloud platforms such as BrowserStack and LambdaTest. Your device matrix is built from your own user base, and AI-powered pipelines run every combination in parallel. Codoid has delivered software testing since 2012 for 200+ clients worldwide.

Talk to our experts

Ready to Test Across Every Device?

Business enquiries[email protected] Call us+91 73584 38863

Awards & recognitions

Great Place to Work – Certified — **Great Place to Work®**Certified

ISTQB – Silver Partner — **ISTQB**Silver Partner

TESTA Awards – Finalist — **TESTA Awards**Finalist

ISO/IEC 27001:2022 – Certified — **ISO/IEC 27001**Certified

Best Places to Work – India — **Best Places to Work**India

Techreviewer – Top QA Company — **Techreviewer**Top QA Company

The CEO Magazine – Featured — **The CEO Magazine**Featured

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