Wearable App Development Services

At Yalantis we build wearables end to end, so the same team writes the firmware on the device and the app people open every morning. That covers Apple Watch and Wear OS, Samsung Galaxy Watch, Fitbit and Garmin, plus IoMT sensors and hardware of your own, with the data landing in your platform or a doctor’s EHR.

Wearable App Development Services

What our wearable app development services cover

Six areas make up our wearable application development services, and you can take all of them or just the part your own team is missing.

What usually goes wrong, and
how we handle it

Almost every project runs into the same challenges in wearable app development, so here is our answer to each one.

What gets in the way How we handle it
The app drains the watch by lunchtime
  • We budget power per feature before anyone writes production code, then measure sampling rates and radio wake time on the device itself. Readings get batched, and every build is checked against the battery life your product page promises.
The connection drops and readings go missing
  • We treat sync as unreliable by default, so the device buffers locally and replays whatever the phone missed. A gym session with the phone in a locker becomes a short delay, and the record stays whole.
Nobody trusts the numbers the device reports
  • Raw output from wearable sensors is noisy, so we calibrate against a reference device and filter on the way in. Anything the algorithm cannot stand behind is flagged as low confidence, which is the first thing a clinical reviewer asks about.
Patient data moves through a system nobody has audited
  • Health data gets classified before the first screen is designed, then encrypted in transit and at rest with access tied to role. Our work runs under ISO 27001, and the records your HIPAA or GDPR assessment needs are written as we go.
The EHR connection becomes its own project
  • We start from the interface the hospital actually exposes, usually HL7 v2 or FHIR, and map your data model onto it in the first weeks. Testing runs against a sandbox instance long before anyone picks a go-live date.
You cannot hire wearable app developers fast enough
  • The team is already here. As a wearable app development company with 400 engineers on staff, we give you the mix this stage needs without waiting on a hiring cycle, and we change it as the project moves on.

How a wearable project runs with us

Every stage of our wearable app development process closes with something you can open on a device, so you always know where the product stands.

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Discovery and product definition

We start with the devices you have to support and the data that has to leave them, then agree on the regulatory path ahead and the numbers that will tell you the product is working. Cost per device and expected fleet size come up here too, because both shape the cloud design later.

Ends with: a scope you can budget against and an agreed data model

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UX for a screen the size of a stamp

Once the scope is agreed, user experience work starts from a hard fact: a wrist gets about two seconds of attention, so most of the work is deciding what to leave out. We define the glance view and the alert behavior, then settle what the companion app has to carry that a watch face cannot.

Ends with: a clickable prototype running on the target device

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Device and firmware layer

Right after the design is signed off, we write the code closest to the sensor: drivers, sampling, the Bluetooth profile, and a signed update path so a bug can be fixed in the field without a recall. Power draw gets measured on real hardware in our lab as features land, which is when a bad decision is still cheap to reverse.

Ends with: firmware on hardware, with measured battery numbers

 

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Companion app

Then wearable mobile app development starts on the data coming off the device, covering iOS, the Android wearable app and the watch app where one belongs. Sync is offline first, so anything buffered on the device gets replayed once it reconnects and the app behaves the same on a subway platform as it does on office Wi-Fi.

Ends with: a build your team can install and use daily

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Cloud and integrations

After that the backend goes in, with ingestion and storage tuned for time series data, plus the APIs your other systems call. This is also where the connections into your EHR and RPM tooling get built, then tested against a sandbox instance first.

Ends with: an end-to-end path from wrist to clinical system

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QA, security and compliance

With the full chain running, testing covers the connected system at once, from device to cloud, because the interesting failures live in the joints between them. Endurance runs and connection loss scenarios happen here, along with penetration testing, and the documentation your auditor asks for is assembled as the tests pass.

Ends with: test evidence and a compliance record set

 

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Launch, then the long tail

Finally, we handle submission to the app stores and the health claims review that comes with it, then watch the first weeks of real usage closely. From there the work settles into a rhythm of OS upgrades and new device generations, plus the features your users start asking for once they trust the app.

Ends with: a shipped product and a support model you can plan around

 

Give clinicians data they can act on the same day

Partner with Yalantis on a wearable app that puts live patient data in front of the people making treatment calls, so a change in someone’s condition surfaces while there is still time to respond to it.

Why teams pick us for wearable app development

Our wearable app development services keep the firmware and the app on one team, and everyone on it has shipped connected products before.

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Wearable device integration expertise

We build for smartwatches and fitness trackers, plus devices running an OS of your own, and we have worked through the quirks each of these wearable platforms hides in its background execution rules. That experience is usually the difference between a two-week integration and a two-month one.

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Tuning for the constraints that actually bite

On a wrist you are working against battery life and radio time, inside the half second of attention you get before someone looks away. We profile against all of them on real hфardware, so the app stays quick and the device still has charge at bedtime.

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Embedded software under the same roof

Our embedded team writes firmware built for stability and long device life, and they sit inside the same organization as the mobile and cloud engineers. When a driver and an app disagree about what a reading means, the two people involved settle it in the same standup.

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An agile process that survives changing requirements

Developing wearable apps in short sprints with a demo at the end of each one keeps the product pointed at what you learned last month rather than what you assumed at kickoff. You see the same build your users will see, early and often.

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Testing the connected system as a whole

Our QA team runs wearable device compatibility checks alongside the ugly cases, like a flat battery mid-sync or a phone that switched to airplane mode at the wrong moment. Those are the bug reports that keep support tickets low once you are live.

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A team that stays after release

A wearable app development company earns its keep after launch, so we monitor performance and ship updates based on what users actually do. Each new OS version gets handled before it breaks anything. Clients tend to stay with us past four years, and our NPS sits at 91, which mostly reflects how the work goes once the first release is behind us.

Our wearable app development success stories

Three healthcare programs where device data had to reach a clinician, and what changed once it did.

Let’s build a wearable people keep wearing

Tell us about the device and where the data has to end up. Our engineering lead comes back with a scope and a team shape, plus the two or three questions worth settling before anything starts.

The tech stack we build wearables with

What we reach for depends on your device and the compliance path in front of it, so here is what our teams use most.

Health data, handled the way auditors expect

Compliance work starts at the architecture review, so the evidence is ready before anyone asks for it.

Regulations and standards we build to

Testimonials

Yalantis isn’t a factory that you send over some requirements and they develop exactly to those requirements. They bring a really intelligent and dynamic approach to the engagement that you don’t get sometimes with other vendors.

Simon Jones, CIO in Healthcare

What fascinated me the most is how invested the Yalantis development team is, and how they often exceeded expectations in what we were trying to accomplish in terms of timeframes. 

Sérgio Miguel Vieira, Founder and CEO

They have very good organization and project management expertise. We’re not just getting the developers, we’re getting a whole support structure. Also, Yalantis cares about their employee satisfaction. And with satisfied employees, we get much better output. 

Sergei Lishchenko, Director of Digital Experience

One of the biggest values they bring to the table is the way of thinking critically during the whole development process. They’re not just building software, they’re effectively solving your business problem.

Ron Bullis, President and Founder at Lifeworks Advisors

Yalantis has been a great fit for us because of their experience, responsiveness, value, and time to market. From the very start, they’ve been able to staff an effective development team in no time and perform as expected. 

Mark Boudreau, Founder and COO at Healthfully

Established development flows and good communication skills made collaboration with Yalantis very smooth. If you are looking for a professional, dedicated and a solid technical partner and a well-processed software outsourcing company for your project, I’d recommend Yalantis.

Ken Yu, CEO at RAKwireless

Working with Yalantis, you get their breadth of experience building hundreds of projects. Their expertise and knowledge were second to none. And that makes the difference between a good product and a great product.

Andrew Gazdecki, CEO at MicroAcquire

With the product built by Yalantis, we have a lot of possibilities for growth. They elaborated a great user experience for our operators to work more efficiently and properly deal with troubleshooting. And the architecture of the product is scalable and ready for the future.

Alejandro Resendiz, General manager at 123 Sourcing

Related services and industries

Other services we provide

Frequently Asked Questions

  • What industries benefit most from custom wearable app development?

    Health and fitness products and clinical care get the most out of it, since both run on data coming off a body all day. Logistics and workplace wellness follow close behind, where the question is usually where something is or how a person is holding up through a shift. The pattern is the same everywhere: if a decision depends on knowing something today, a wearable earns its place.

  • Can you integrate wearables with existing healthcare systems?

    Yes, and it is one of the more common reasons teams call a wearable application development company. We connect wearable apps to EHRs and RPM platforms over HL7 v2 or FHIR, depending on what the hospital exposes, and we agree that mapping in the first weeks so nothing surfaces late.

    Testing then runs against a sandbox instance, with access control and audit logging in place from the start, since those are the parts your security review will look at hardest.

  • Do you offer post-launch support for wearable apps?

    Yes, and with app development for wearable devices it matters more than usual. Every new phone or watch OS release can quietly change background execution or Bluetooth behavior, which is enough to break a sync that worked fine last month, so we keep the app current and watch how it behaves in production.

  • How do you ensure HIPAA and GDPR compliance in wearable apps?

    Compliance shapes the architecture here, so it is one of the first conversations we have with you.
    Health data gets classified during design, then encrypted in transit and at rest. Access is tied to role, with logging behind it.

    Our own delivery runs under ISO 27001, and regulated device software is documented to IEC 62304 inside an ISO 13485 quality system. When your assessment comes around, there are records to hand over.

  • Can you build cross-platform apps for wearables?

    Yes. Our smartwatch app development services cover Wear OS and Apple Watch, plus fitness bands and devices running an OS of your own, and the experience stays consistent across them. Cross-platform wearable app development saves time where it does not cost battery life, and Android wearable app development or native watchOS code goes in where a platform needs it.

  • How can wearable apps improve remote patient monitoring?

    The gain is continuity. A clinic visit gives you one reading on one day, while a wearable gives you the shape of a whole month, and that is usually where the useful signal sits.
    In practice we build apps that track vitals and sync them into your RPM tooling, then alert a provider once a reading crosses a threshold you set. Patients travel less, and your team hears about a problem while it is still small.

  • Can you develop custom solutions as part of wearable technology app development?

    Yes. Custom wearable device app development runs from validating the concept through to a finished product, including the device software when the hardware is yours. The apps we build talk to consumer wearables and to regulated medical devices, so whichever way your product goes, the data lands somewhere your team can use it.

  • How does your wearable app development support healthcare IoT?

    Healthcare wearable app development and healthcare IoT sit on the same foundation: secure connectivity and a data model that holds up as the fleet grows.

    So in practice the work looks much the same. We connect your IoMT devices and analyze what they send, then pass it into your EHR or RPM systems, which keeps monitoring and treatment decisions on current readings.

  • How do you keep a wearable app from draining the battery?

    We treat power as a requirement with a number attached, then design toward it. Sampling rates and radio wake time get measured on the device itself, and readings are batched so the radio stays asleep longer. Anything running in the background has to earn its place.

    Every build is then checked against that battery target before it goes near a release. Battery complaints are the fastest route to a one-star review, so it is worth being strict here.

How to get started with Yalantis

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