Crystal Syntax Start a project

Mobile engineering by Crystal Syntax

One codebase.
Two platforms.
Built to last.

We turn product ideas into fast, polished Flutter applications for iOS and Android - with strong UX, reliable architecture, and a clear path to launch.

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Senior engineeringFlutter expertiseStore-ready releases
ANALYTICS84%
9:41
PRODUCT STATUS

Ready to
move forward.

Next milestoneStore releaseOn track
FlutteriOSAndroid

01 / EXPERTISE

Everything your mobile product needs.

From the first product decisions to a stable release, one experienced team keeps design, engineering, and delivery aligned.

01

Flutter development

One maintainable codebase with native-feeling interfaces and consistent behavior across iOS and Android.

02

Product and UX

Clear user flows, thoughtful states, responsive layouts, localization, themes, and accessible interactions.

03

Backend integration

Secure APIs, authentication, subscriptions, notifications, analytics, and dependable data synchronization.

04

Store delivery

Signing, release builds, store assets, privacy requirements, testing, and submission support.

02 / BUILT IN PRACTICE

We build our own products too.

Last Done is our multilingual Flutter app for recurring actions and reminders. It combines local-first data, notifications, templates, themes, subscriptions, and production-ready Android and iOS configuration.

Explore Last Done
Last Done app icon
OUR MOBILE APPLast DoneRemember less. Live more.

03 / PROCESS

A focused path to production.

Visible decisions, short feedback loops, and working software keep risk controlled and momentum high.

  1. 01

    Discover

    We clarify the audience, business outcome, scope, risks, and smallest valuable release.

  2. 02

    Design and architect

    We shape the experience and technical foundation before complexity becomes expensive.

  3. 03

    Build and validate

    Product design and engineering move together in short, transparent iterations.

  4. 04

    Launch and evolve

    We test on real devices, prepare both stores, ship confidently, and support what comes next.

Have a mobile product in mind?

Let us make it
crystal clear.

Tell us what you are building, improving, or trying to untangle. We will bring the product and engineering perspective.

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