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Yeti Technology

Design

Mobile UX/UI Design for Native Apps

Interface design for iOS and Android by people who understand what the platforms can do — screens designed around speed, clarity, and native behaviour, delivered as specs engineers can actually build.

Most app design problems are not visual problems. They are structural: too many taps to the thing users came for, navigation that fights the platform, states nobody designed — loading, empty, offline, error — left for developers to improvise. We design mobile interfaces from the interaction model outward, on real platform components and real content, so what ships matches what was signed off. A good app should not feel like a website trapped inside a phone.

Fewer taps

interaction architecture that puts core jobs within immediate reach

No orphan states

every loading, empty, and error state designed before build

Buildable specs

design systems that translate directly to SwiftUI and Compose

Product and UX discovery first

Before drawing screens we map who the app serves, the jobs it must do brilliantly, and the constraints — platform, data, offline, regulatory — that shape the design. The output is an interaction architecture: flows, states, and hierarchy agreed before high-fidelity work begins, so design effort lands on the screens that matter.

  • User flows and information architecture before pixels
  • Every state designed: loading, empty, error, offline, permission-denied
  • Prototypes tested on device, where thumb reach and motion are real
  • Scope shaped around the few things the app must do brilliantly

Native-first interface design

We design with the grain of each platform — iOS and Android navigation, typography, and component behaviour — then apply your brand through colour, type, and tone rather than fighting the OS. The result is an app that feels immediately familiar to use and unmistakably yours to look at.

  • Platform-correct navigation, gestures, and component behaviour on each OS
  • Typography and spacing systems built on Dynamic Type and platform scales
  • Motion design specified precisely: duration, easing, interruptibility
  • Accessibility as a design input — contrast, touch targets, focus order, labels

Design systems that survive contact with engineering

A design is only as good as its handover. We deliver component libraries with defined variants and states, tokens for colour, type, and spacing, and specs precise enough that engineers build the intended interface rather than an approximation of it. When we also build the app, design and engineering iterate in the same room.

  • Component libraries in Figma with variants, states, and usage rules
  • Design tokens mapped to SwiftUI and Compose theming
  • Redlines and motion specs engineers can implement without guessing
  • A system your team can extend after the engagement ends

Design quality you can feel, not just screenshot

The screens that win design awards are not always the apps people love to use. We optimise for the felt experience — how fast the app seems, how confident each interaction feels, how little users have to think — and we validate on device throughout, because a design that only looks good in Figma is not finished.

Every engagement includes

  • Native architecture planning before code
  • Senior developer review on every pull request
  • App Store & Play Store launch support
  • 3 months of free post-launch support
See the full process, review gates, and support terms →

Frequently asked questions

Do you design for iOS and Android separately?

We design a shared product structure and brand language, then adapt navigation, components, and interaction details to each platform's conventions. It costs a little more than one-size-fits-all and it is why the app feels right on both — users judge an app against the other apps on their phone.

Can you work with our in-house developers?

Yes. We deliver structured Figma libraries, tokens, and motion specs, and we stay available during implementation to review builds against the design. The handover is a working relationship, not a file transfer.

Do you do user testing?

We prototype key flows and test them on device with representative users where the engagement allows. Even lightweight testing — five users on a clickable prototype — catches structural problems far more cheaply than an App Store review cycle does.

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