HarmonyOS App Development Company for the Huawei Ecosystem
Native HarmonyOS App Development for the Huawei Ecosystem
We build native HarmonyOS apps in ArkTS and ArkUI that run across phones, tablets, watches, cars, and IoT from a single codebase. Reach 730M+ Huawei devices native React Native and Flutter cannot fully serve, and launch on AppGallery with a senior HarmonyOS team.
HarmonyOS Delivery Promise
- AppGallery Approved
- Multi-Device Ready
- Native ArkTS Performance
HarmonyOS Delivery Promise:
- AppGallery Approved
- Multi-Device Ready
- Native ArkTS Performance
HarmonyOS Apps Delivered
0
+
AppGallery Users
0
M+
HarmonyOS Devices
0
M+
HarmonyOS App Suite
Native HarmonyOS Apps
150+ Apps
ArkTS / ArkUI
Native UI
Distributed Apps
Multi-Device
Multi-Device UI/UX
Adaptive
AppGallery Launch
100% Approved
HMS Core Integration
Full Suite
Android to HarmonyOS
Migrations
HarmonyOS NEXT
Future-Ready
Wearable & IoT
Cross-Device
Avg. Project NPS
+72
On-Time Delivery
96%
↑ 4%
Repeat Clients
81%
Trusted By Startups
The Value of One Trusted HarmonyOS Development Company in the USA
Stallyons is a senior HarmonyOS development company helping founders, product leaders, and enterprise teams launch native apps for the Huawei ecosystem. We are not a generic cross-platform shop bolting on a plugin. We build directly in ArkTS and ArkUI on HarmonyOS NEXT, so your app feels native on every Huawei device.
Most teams try to reach Huawei users by porting an Android build or stretching a React Native app, and the experience never feels right. Distributed features break, AppGallery review flags issues, and HMS Core stays unused. We build for HarmonyOS from the first commit, so one codebase deploys cleanly across phone, tablet, watch, car, and IoT.
Our Full HarmonyOS Development Range
Native HarmonyOS App Development: Ground-up apps written in ArkTS with the ArkUI declarative framework and built in DevEco Studio, targeting HarmonyOS NEXT for true native performance.
Distributed & Super-Device Apps: Cross-device experiences that hand off seamlessly across phone, tablet, watch, car, and IoT using HarmonyOS distributed capabilities and adaptive layouts.
Android to HarmonyOS Migration: We map your existing Android APIs to HarmonyOS equivalents and rebuild in ArkTS/ArkUI, so you reach Huawei users without maintaining a fragile port.
HMS Core Integration: Full Huawei Mobile Services suite, including Push Kit, Map Kit, ML Kit, Account Kit, IAP Kit, and Analytics Kit, wired the way AppGallery expects.
AppGallery Launch & ASO: Store-ready packaging, compliance checks, submission, and app store optimization for a near-100% first-submission approval rate on Huawei AppGallery.
Maintenance & HarmonyOS NEXT Readiness: Ongoing updates, version compatibility, and migration to HarmonyOS NEXT as Huawei moves beyond Android compatibility.
Why Stallyons Is the HarmonyOS Partner Businesses Trust
- True Native, Not a Port: Every app is built in ArkTS and ArkUI on HarmonyOS NEXT, not wrapped Android or a webview shell.
- Distributed by Design: We architect for super-device from day one, so phone, tablet, watch, car, and IoT share one seamless experience.
- Senior HarmonyOS Engineers: No outsourced juniors. Specialists who follow the official HarmonyOS developer guidelines and know DevEco Studio inside out.
- AppGallery Fluency: We know Huawei review criteria and HMS Core requirements, so your launch clears review the first time.
- Reach Huawei Users: Access 730M+ HarmonyOS devices and 530M+ monthly AppGallery users that native RN and Flutter builds cannot fully serve.
- Own Your Codebase: Clean, documented ArkTS you fully own, with knowledge transfer and post-launch support built in.
How to Start Your HarmonyOS Project
Every engagement starts with a free 45-minute strategy session. No slide deck and no sales script. You bring the goal (a new HarmonyOS app, an Android migration, or an AppGallery launch) and leave with a clear scope, device strategy, and timeline whether or not you work with us.
We are selective about new HarmonyOS engagements and cap our active client count to keep the senior-engineer-to-project ratio high. If we take your app on, it gets a senior HarmonyOS team building in ArkTS and ArkUI, not a queue.
Why Clients Choose Us
150+
HarmonyOS Apps Delivered
730M+
Devices Reachable
100%
AppGallery Approval Rate
4.9/5
Clutch Rating
Ready to reach 730M+ Huawei devices with a native HarmonyOS app?
10 App Categories
HarmonyOS Applications We Build Across the Huawei Ecosystem
From consumer apps to enterprise systems, we develop native HarmonyOS apps for every device in the Huawei ecosystem. Pick one, or let us build the full multi-device experience.
Consumer & Lifestyle
Social, media, and everyday utility apps
NATIVE ARKTS
Enterprise & Productivity
Internal tools, ERP, and workflow apps
MULTI-DEVICE
Ecommerce & Retail
AppGallery storefronts and mobile commerce
IAP KIT
Super Apps
Multi-service apps with mini-programs
DISTRIBUTED
Wearable Apps
HarmonyOS watch and band experiences
ADAPTIVE UI
Smart TV & Large Screen
Living-room apps and casting
BIG SCREEN
IoT & Automotive
In-car HMI and connected-device control
SUPER-DEVICE
FinTech & Payments
Wallets, banking, and HMS payment apps
ACCOUNT KIT
Health & Fitness
Tracking apps with Huawei Health Kit
HEALTH KIT
Education & Learning
Course, LMS, and edtech apps
CROSS-DEVICE
Ready to build for the HarmonyOS ecosystem? Let us map your app to the right devices.
Common Challenges
Struggling to Launch on HarmonyOS?
These platform-specific hurdles stall most teams entering the Huawei ecosystem. Our HarmonyOS experts remove them so you ship a stable, AppGallery-ready app.
Scarce HarmonyOS Talent
01
Native HarmonyOS engineers are hard to find. Most agencies only know Android or React Native, so ArkTS and ArkUI projects stall before they start.
Android APIs Do Not Port
02
HarmonyOS NEXT drops Android compatibility. Lifting an existing Android app breaks APIs, permissions, and services unless it is rebuilt in ArkTS.
Multi-Device Complexity
03
Making one app adapt cleanly across phone, tablet, watch, car, and IoT needs distributed architecture most teams have never built.
AppGallery Rejections
04
Huawei review flags compliance, HMS integration, and performance issues. Repeated rejections push your launch back weeks.
Slow ROI & Long Time-to-Value
05
Push, Maps, ML, Payments, and Account Kit each have Huawei-specific setup. Skipped integration means broken features and failed reviews.
HMS Core Integration Gaps
06
Huawei is moving to a fully independent OS. Building on the wrong foundation now means an expensive rewrite later.
Recognize any of these? Let us get your HarmonyOS app on track.
HarmonyOS Services
6 HarmonyOS Development Services Built to Compound
Each service is a senior HarmonyOS team. Mix, match, or run them in parallel. Every line is built to make the others faster and better.
Native HarmonyOS App Development
01
Ground-up apps written in ArkTS with the ArkUI declarative framework in DevEco Studio, targeting HarmonyOS NEXT for true native performance, never a webview or a port.
Distributed & Multi-Device Apps
02
Super-device experiences that hand off seamlessly across phone, tablet, watch, car, and IoT, using HarmonyOS distributed capabilities and adaptive ArkUI layouts.
Android to HarmonyOS Migration
03
We map your Android APIs to HarmonyOS equivalents and rebuild in ArkTS/ArkUI, so you reach Huawei users without maintaining a fragile compatibility layer.
AppGallery Launch & ASO
04
Store-ready packaging, compliance checks, submission, and app store optimization for a near-100% first-submission approval on Huawei AppGallery.
HMS Core Integration
05
Full Huawei Mobile Services: Push Kit, Map Kit, ML Kit, Account Kit, IAP Kit, and Analytics Kit, wired the way AppGallery review expects.
Artificial Intelligence
06
Multi-device design systems and adaptive UI, paired with cross-device QA across phone, tablet, watch, and TV so your app looks and works right everywhere.
Need to combine several HarmonyOS service lines into one engagement?
Why Partner with Us?
The Business Results You Get With HarmonyOS App Development
What you gain when a senior team builds your app natively for the Huawei ecosystem, not as an afterthought.
Reach 730M+ Huawei Users
01
Tap the HarmonyOS device base and 530M+ monthly AppGallery users that Android and iOS builds leave on the table.
Native ArkTS Performance
02
Apps built in ArkTS and ArkUI run smoother and start faster than ported or cross-platform builds on Huawei hardware.
One Codebase, Every Device
03
Develop once and deploy across phone, tablet, watch, car, and IoT with HarmonyOS distributed architecture.
AppGallery-Ready
04
Compliance, HMS Core, and performance handled up front for a near-100% first-submission approval rate.
Future-Proof on NEXT
05
Built on native HarmonyOS NEXT APIs, so your app is ready as Huawei moves fully beyond Android compatibility.
98% Client Satisfaction
06
A senior HarmonyOS team, transparent delivery, and outcomes that hold up long after your AppGallery launch.
Ready to reach the Huawei ecosystem with a native app?
Our Process
From Discovery to AppGallery Launch in 6 Proven Steps
A proven, end-to-end process our HarmonyOS experts use to deliver secure, scalable, AppGallery-ready multi-device apps.
Discovery
Requirements analysis and device strategy
Design
UI/UX for multi-device experiences
Development
ArkTS, ArkUI, and HMS Core integration
Testing
Cross-device QA validation
Launch
AppGallery submission and optimization
Support
Ongoing maintenance and updates
Want to see how this maps to your HarmonyOS app?
Technology Stack
Our HarmonyOS App Development Technology Stack
A modern, enterprise-ready stack for secure, scalable, high-performance HarmonyOS apps across the Huawei ecosystem.
Web & Backend
Next.js / React
Node.js / Vue
Python / Django
.NET / Java
TypeScript
Mobile & Cross-Platform
Swift / iOS
Kotlin / Android
React Native
Flutter
Ionic / HarmonyOS
AI / ML / Data
OpenAI / Claude
Gemini / Qwen
PyTorch / TensorFlow
Hugging Face
SageMaker / Vertex AI
Ecommerce & CMS
Shopify / Plus
BigCommerce
WooCommerce
Magento / OpenCart
Webflow / Framer
Cloud & DevOps
AWS / GCP / Azure
Docker / K8s
Terraform / IaC
GitHub Actions / CI
Datadog / Grafana
Technology Stack
Our HarmonyOS App Development Technology Stack
A modern, enterprise-ready stack for secure, scalable, high-performance HarmonyOS apps across the Huawei ecosystem.
Web & Backend
Next.js / React
Node.js / Vue
Python / Django
.NET / Java
TypeScript
Mobile & Cross-Platform
Swift / iOS
Kotlin / Android
React Native
Flutter
Ionic / HarmonyOS
AI / ML / Data
OpenAI / Claude
Gemini / Qwen
PyTorch / TensorFlow
Hugging Face
SageMaker / Vertex AI
Ecommerce & CMS
Shopify / Plus
BigCommerce
WooCommerce
Magento / OpenCart
Webflow / Framer
Cloud & DevOps
AWS / GCP / Azure
Docker / K8s
Terraform / IaC
GitHub Actions / CI
Datadog / Grafana
Industries We Serve
HarmonyOS Apps for 50+ Industries, From Startups to the Fortune 500
HarmonyOS expertise across the industries where reaching Huawei users and multi-device experiences compound revenue.
Fintech & Banking
Payments, KYC, regulatory tech
Healthcare & HealthTech
HIPAA, telehealth, clinical SaaS
Retail & E-Commerce
DTC, B2B, marketplace, headless
EdTech & Learning
LMS, course platforms, proctoring
Manufacturing & Industrial
IoT, predictive maintenance, MES
Logistics & Supply Chain
Routing, fleet, warehouse, B2B
Legal & LegalTech
Document AI, contract analysis
Media & Entertainment
Streaming, content AI, audience
We understand your vertical. Let us build a HarmonyOS app that leads it.
How We Compare
HarmonyOS Experts vs Generic App Agencies
An honest look at your options for building an app for the Huawei ecosystem.
| Capability | Freelance Dev | RN / Flutter Shop | Offshore Agency | Stallyons Technologies |
|---|---|---|---|---|
| Native ArkTS / ArkUI Build | ✕ Rare | ✕ Webview / Port | Inconsistent | Native NEXT |
| Distributed Multi-Device | ✕ No | Phone Only | Limited | Super-Device |
| HMS Core Integration | Partial | ✕ Gaps | Basic | Full Suite |
| AppGallery Approval | Trial and Error | Delayed | Multiple Tries | ~100% 1st Try |
| HarmonyOS NEXT Ready | ✕ Unclear | ✕ Compat Layer | Uncertain | Future-Proof |
| Senior HarmonyOS Engineers | Solo | Generalists | ✕ Junior-Heavy | Senior-Heavy |
| Own Your Codebase | Maybe | Partial | Partial | 100% Yours |
See the HarmonyOS difference for yourself
Complete Engagement
Everything You Get With Our HarmonyOS Development Partnership
From Strategy to Launch to Growth All Under One Roof
Here's everything included when you build your HarmonyOS app with Stallyons:
All-Inclusive HarmonyOS Delivery: No Hidden Fees, No Surprises.
Every HarmonyOS engagement includes all 8 components above. One contract, one senior team, one predictable price, from ArkTS build to AppGallery launch.
🔒 No obligation. We'll deliver a detailed proposal within 48 hours.
Plus, Get These Free Bonuses
Free HarmonyOS Feasibility Audit
A review of your app idea or existing Android build for HarmonyOS readiness, device targets, and HMS Core fit. Yours free whether you sign or not.
Included Free
HarmonyOS Roadmap & Estimate
A phased delivery plan with device strategy, milestones, an ArkTS architecture outline, and a transparent, itemized estimate for your project.
Included Free
Proof-of-Concept Sprint
For qualifying projects, a 1-week ArkTS/ArkUI PoC at no cost, so you see native HarmonyOS work product before committing to the full build.
Included Free
Risk-Free Partnership
Our Triple Guarantee for HarmonyOS Success
We stand behind every HarmonyOS engagement with commitments that protect your investment and reduce delivery risk.
01
AppGallery Approval Guaranteed
We build to Huawei review standards and handle submission end to end. If your app is rejected for something we scoped, we fix it and resubmit at no extra cost.
02
Native Performance, Battle-Tested
Senior engineers, code review, automated tests, and cross-device QA on every build. If native performance slips on any target device, we fix it at no extra cost.
03
On-Time, Outcome-Focused Delivery
A fixed scope, timeline, and price agreed up front across ArkTS build, HMS integration, and AppGallery launch. If we miss the date we commit to, we keep working until we hit it.
Build your HarmonyOS app with zero risk, backed by our Triple Guarantee.
Track Record
Engagements That Ship, Scale, and Compound
500+
Projects Delivered
29+
Service Categories
81%
Repeat Client Rate
4.9 ★
Clutch Rating
"We came to Stallyons after burning two years and four vendors on a multi-platform launch that kept slipping. They scoped it end-to-end — web app, iOS, Android, an AI summarization layer, and a Shopify integration — and shipped it in 22 weeks. One team, one budget, one quality bar. We've handed them three more engagements since."
Mark Sawyer
CEO/Founder
PlatinumLED
"Stallyons rebuilt our customer-facing portal, integrated three legacy systems, shipped an AI document analysis pipeline, and brought our compliance posture to SOC 2 — all under one engagement. The senior engineers on the team have shipped at companies five times our size. It's the best vendor decision we've made in a decade."
Mark Sawyer
CEO/Founder
PlatinumLED
FAQ
Frequently Asked Questions About HarmonyOS App Development
HarmonyOS is Huawei’s operating system built for multi-device experiences. With 730M+ devices worldwide and 530M+ monthly active AppGallery users, it offers massive reach in China and emerging markets. Its distributed architecture lets you build once in ArkTS and deploy across phones, tablets, watches, cars, TVs, and IoT.
Timelines vary by complexity. A basic single-device app typically takes 8-12 weeks. Multi-device distributed apps across phones, watches, and tablets take 12-20 weeks. Enterprise solutions with complex integrations may need 16-24 weeks. We give detailed timelines during discovery.
Yes. We specialize in Android to HarmonyOS migrations. We analyze your codebase, map Android APIs to HarmonyOS equivalents, and rebuild in ArkTS and ArkUI. Most migrations complete in 8-14 weeks depending on complexity.
Huawei AppGallery typically reviews apps within 5-10 business days, covering compliance, security, performance, and UX. We ensure your app meets all guidelines before submission, achieving a near-100% first-submission approval rate.
Yes. We are fully prepared for HarmonyOS NEXT, Huawei’s independent OS that moves beyond Android compatibility. Our developers work in native HarmonyOS APIs and the latest ArkUI/ArkTS frameworks, so your app is future-proof.
We integrate the full HMS Core suite, including Push Kit, Map Kit, ML Kit, Analytics Kit, Ads Kit, Account Kit, IAP Kit, and Health Kit. These services are essential for feature-rich HarmonyOS apps and clean AppGallery review.
Yes, that is HarmonyOS’s core advantage. Using distributed architecture and adaptive ArkUI components, we build apps that adjust to different screen sizes and device capabilities and share data and features seamlessly across devices.
Every project includes 90 days of post-launch support covering bug fixes, minor adjustments, and HarmonyOS update compatibility. We also offer extended maintenance plans for ongoing feature development and critical-issue support.
Still have questions? Let's talk.
Schedule an appointment with us today!
Ready to Launch on HarmonyOS?
Get a free 45-minute consultation. Bring your app idea or Android build, and walk away with a HarmonyOS device strategy and a detailed proposal within 24 hours.
