Drezen Technology

Mobile

Android App Development Services

Kotlin apps built for the real spread of Android devices.

About Android App Development

Android's strength and its difficulty are the same thing: reach. Your app will run on a three-year-old mid-range device with 4GB of RAM, an aggressive vendor battery optimiser and a 720p screen, as well as on a current flagship. Teams that only test on the flagship ship apps that are janky, battery-hungry or outright broken for a large share of their actual users — and they usually find out from one-star reviews.

We build native Android in Kotlin with Jetpack Compose, following Material 3 and modern Android architecture: unidirectional data flow, coroutines and Flow for asynchrony, Room for local persistence, Hilt for dependency injection, and WorkManager for background work that survives Doze and vendor-specific process killing. We handle the platform realities that matter — runtime permission flows that respect the user, scoped storage, foreground service types, notification permission on Android 13+, predictive back, and edge-to-edge layouts.

Testing happens on real hardware. We run a device matrix that reflects your actual analytics — a spread of manufacturers, API levels, screen densities and RAM tiers — plus Firebase Test Lab for wider coverage. Performance is measured with baseline profiles, startup tracing and jank metrics rather than assessed by feel. Play Console releases go out through staged rollouts with Android vitals monitored, so a regression in ANR rate or crash rate halts the rollout automatically instead of reaching everyone.

We also handle the store side properly: Play Console policy compliance, data safety declarations, target API level deadlines, app bundle optimisation and Play Integrity where fraud is a genuine concern.

Why it matters

What you get

Tested across the real device spread

A device matrix built from your own analytics — manufacturers, API levels, densities and RAM tiers — plus Firebase Test Lab for breadth.

Modern Kotlin architecture

Jetpack Compose, coroutines and Flow, Room, Hilt and WorkManager — a stack the wider Android market can maintain after we hand over.

Battery and background reliability

Work scheduling designed around Doze and vendor battery optimisers, so background sync still runs on the devices that fight it hardest.

Safe releases

Staged Play rollouts gated on Android vitals, so a regression in ANR or crash rate stops the release rather than reaching your whole base.

Policy compliance handled

Data safety declarations, target API deadlines, permission justification and Play Integrity managed as part of delivery.

How we deliver

Our process for this work

Adapted to this service specifically — not a generic five-box diagram.

  1. 01

    Product & device strategy

    1–2 weeks

    Feature scope plus a minimum supported API level and device matrix derived from your user analytics, not from a default.

  2. 02

    Material design & interaction

    2–4 weeks

    Material 3 interface design, dynamic colour handling, motion specification, and accessibility planning for TalkBack and scaled text.

  3. 03

    Build

    8–18 weeks

    Sprint increments with internal-track builds, unit and Compose UI tests in CI, and continuous testing on the physical device matrix.

  4. 04

    Beta & release

    2–3 weeks

    Closed and open testing tracks, baseline profile generation, store listing and data safety form, then a staged production rollout.

  5. 05

    Operate & iterate

    Ongoing

    Android vitals monitoring, ANR and crash triage, annual target API compliance, and continuing feature delivery.

Answers

Android App Development — common questions

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UI/UX Design

Interface design grounded in research and built to be shipped.

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QA & Test Automation

Test suites that catch real bugs and that nobody wants to disable.

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Thinking about android app development?

Tell us the problem rather than the solution. A 30-minute call is usually enough for both of us to know whether this is the right service and whether we are the right team.

sales@drezentechnology.comUsually replies within one business day