Verified by Clutch™ reviews

Mobile app design for iOS and Android

We design iOS and Android apps people open every day – clear onboarding, habit-building flows and polished interfaces ready for development.
Get a Project Estimate
See Our Projects
4
2
3
4
5
3
4
7
0
8
6
7
0

Projects successfully launched for clients

6
4
6
8
1
2
7
8
9
1
2

Years in Web & UX Design

6
6
2
3
4
5
6
8
0
3
4
5
6
7
0
+

International Design Awards

About Service

Mobile app design built around retention

Great mobile apps win in the first minute and then earn a place in daily routines. We research your users, map the key flows and design iOS and Android interfaces with native patterns, smooth motion and a scalable design system. For Fastmates we designed a social intermittent fasting app with fasting mates, a nearby-mates radar and playful status creatures that turn a solo habit into a shared one. Development is delivered with our mobile engineering partners in React Native, Flutter or native Swift and Kotlin.

Real-time collaboration

Hey!

We need an app our users will open every day

Hi Philip!

Then we start with the habit loop, not the screens.

Works

Selected works

Fastmates

See work
Year
2022
Niche
Wellness
View All Works
Communication

Always in sync, from day one to launch

01

Early wins

  • First results within a week of kicking off
  • You see real direction early, while there's room to adjust
  • No long silent stretch before you see anything
02

How we work

  • Weekly reviews of designs and staging builds
  • Your feedback goes straight into the next round, not a backlog
  • Nothing goes live without your sign-off
03

Staying in touch

  • Slack or WhatsApp for day-to-day questions
  • Scheduled calls to walk through results and gather feedback
  • Team available 10:00–18:00 Kyiv time (UTC+3)
What you get

Each stage is clearly scoped and delivered, so you stay in control at every step

01

Research & UX

  • User interviews and competitor analysis
  • Key flows and information architecture
  • Retention and engagement goals
  • Wireframes and user testing
02

UI Design

  • iOS and Android interfaces
  • Onboarding, paywalls and notifications
  • Motion and micro-interactions
  • Clickable prototype
03

Handoff

  • Design system and components
  • Developer-ready Figma file
  • App Store and Google Play assets
  • Support during development
Our Process

A design and development partner bringing process, precision and creative thinking to your product

Timeline & Process

+8 experts
Portrait of a woman with short dark hair wearing a beige blazer against a neutral background.Side profile of a young person wearing a beige baseball cap and a black jacket with a white collar against a plain background.Smiling man with short curly brown hair wearing a dark maroon turtleneck against a beige background.
calendar icon
Project time: 8 weeks
01
Brief
Scope
02
03
Agreement
04
Kickoff
05
Design
06
Delivery
07
Support
Our clients

Trusted by product teams across the US and Europe

Umami View

Healthcare

Edway

Education / EdTech

Ply

Logistics

Loamly

SaaS, AI

Kordie

Education / EdTech

Miyagi Labs

Education / EdTech

Merita

entertainment

Our clients

Mobile app design partner for startups and product teams

TheFWA

3× FWA of the Day

Awwwards

15 awards. 4× Site of the Day

CSS DA

25× UI, UX, Innovation

Orpetron

4× SOTD, SOTM, OWDA

Red Dot Awards

1× Winner Brand identity

CSS Winner

5× Site of the Day, Dev Award

CSS Winner

5× Site of the Day, Dev Award

FAQ

Answered questions

1

Do you design for iOS and Android?

Yes. We follow Apple and Google platform guidelines, and design one consistent product that still feels native on each platform.
2

Can you also develop the app?

Yes, together with our mobile engineering partners in React Native, Flutter or native Swift and Kotlin. Cosmos Studio manages the project from design to release.
3

How do you improve retention in mobile apps?

We design a fast first win in onboarding, clear progress, helpful reminders and social features. In Fastmates, fasting mates and a nearby-mates radar turned a solo routine into a shared one.
4

How long does mobile app design take?

An MVP app design usually takes 6–8 weeks, including research, flows, UI and a clickable prototype.
5

Can you redesign our existing app?

Yes. We start with a UX audit of your current app and analytics, then redesign the flows that lose users first.
6

Which mobile apps have you designed?

Fastmates, a social intermittent fasting app with fasting mates and a nearby-mates radar. We also design mobile-first web experiences, as for Zeuss and Sarmat Analytix.

Still got questions?

If yours isn't here, ask our Business Developer Anna on the call.
Book a Discovery Call
Cosmos Studio team
Related services

Services you may also need

UX Audit by Cosmos Studio

UX Audit

UX audit of your website or product: we find where users get stuck and give a prioritized list of fixes to grow conversion and retention.

Web App Development by Cosmos Studio

Web App Development

Web app and SaaS development: product design and React / Next.js frontend in-house, backend with trusted engineering partners, from MVP to scale.

Webflow Development by Cosmos Studio

Webflow Development

Webflow development agency: custom Webflow websites, CMS setup, animations and Figma to Webflow builds your marketing team can edit.

lET'S TALK

Start your project with Cosmos™

Drop us a message, Anna reviews every brief personally and gets back to you within one business day. From there it's simple: we align on scope, sign the contract, and book your start date. Fast, clear, no back-and-forth.

Thank you
Your submission has been received!
Oops! Something went wrong while submitting the form.