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Modus Venture is a UI/UX design agency for startups and SaaS teams. Our app design services turn an idea or an awkward existing product into something people find easy to use, with screens your developers can build from without guesswork.
UI/UX Design
Every confusing screen, unclear button and extra step leaks users. Most of them never complain — they simply leave. User experience design finds and removes that friction before it costs you, and user interface design makes the result look as considered as it feels.
We combine research, information architecture, interaction design and visual design into a single process. You get interfaces grounded in evidence, validated with real users and handed to developers in a form they can build accurately the first time.
Our mobile app design services take you from a rough idea to finished screens. We map the user flows, sketch wireframes, build a clickable prototype you can put in front of real users, and then design the final interface.
As a mobile app UI/UX design agency, we test the prototype before anyone writes code, because changes are cheap at that stage.
iOS app design services follow Apple's conventions for navigation, gestures and controls, so the app feels at home on an iPhone.
Android users expect different patterns, from the back gesture to how menus behave. Android app design services follow Google's Material guidelines and allow for the wide range of screen sizes.
When one codebase serves both platforms, Flutter app design services give you a single design that still respects what each platform's users are used to.
Web app design services cover the screens people work in all day: dashboards, customer portals and admin panels. The aim is to show the right information first and make common tasks take fewer clicks.
As a SaaS UI/UX design agency, we look at the points where subscription products win or lose customers: onboarding, the first useful result, the upgrade path and the pricing page.
SaaS UI design services give your product a consistent look across every screen, backed by a design system your team can reuse.
B2B SaaS UI design has to work for several roles at once, such as the admin who sets things up, the daily user and the manager who only reads reports.
A UI/UX design agency for startups has to respect a small budget. We design the first version around the few features that prove the idea, keep the scope tight, and hand over files developers can build from directly.
Custom app design services from Modus Venture include user research and flows, wireframes, a clickable prototype, final UI for every screen and state, a design system with components and styles, and a developer handoff in Figma.
When the design is ready, the same team can take it through mobile app development for small business and check it with our mobile app testing services.
UI/UX Design
Interviews, surveys and analytics reviews that reveal what your users actually need and where they struggle.
A structured review of your existing product with prioritised, practical recommendations.
Navigation, content hierarchy and user flows that make complex products easy to understand.
Clickable prototypes that let you test ideas with users before a line of code is written.
Polished, on-brand screens for every state, breakpoint and edge case.
Reusable component libraries that keep products consistent and speed up future development.
Why it matters
In detail
( 01 )
We start by learning, not designing. Understanding your users, your business goals and your constraints lets us focus effort where it will make the biggest difference.
( 02 )
We map the paths people take through your product and design every screen, state and transition along the way.
( 03 )
Once the experience is right, we make it beautiful and scalable, with a documented system your developers will thank you for.
How it works
Research, analytics and interviews to uncover the real problems worth solving.
User flows, information architecture and success metrics agreed before we design screens.
Wireframes become prototypes, and prototypes are tested with real users until the flow feels natural.
Final UI, components and specs delivered, with a designer available to developers during build.
Working with us
Design decisions are backed by research and testing, so debates are settled by what users actually do.
You see progress every week in a shared Figma file and can comment directly on screens.
Organised components, auto-layout, tokens and annotations that make implementation faster and more accurate.
We look at real usage data after launch and recommend the next improvements.
Related work
Good morning,
Maria
Next appointment
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Dr. Amara Lewis · General check-up
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A calm, accessible patient app that makes booking, reminders and follow-ups feel effortless.
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Projected balance · 30 Nov
$18,240
12-week forecast
— Actual - - Forecast
Upcoming bills
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Week of Dec 8 dips below your $5,000 safety line. Moving the supplier payment 5 days fixes it.
A cash-flow dashboard for small businesses, plus the content and search strategy to bring it to market.
We design remotely with product teams around the country, including:
Questions
UX (user experience) is how the product works — the structure, flows and logic. UI (user interface) is how it looks — layout, typography, colour and components. We do both together because each depends on the other.
Yes. We run UX audits and design onboarding, dashboards and core workflows for SaaS products, as well as UI/UX for marketing websites and mobile apps.
Your knowledge is a great starting point, and we will use it. Research simply tests assumptions before they become expensive; even a handful of short user interviews can reveal issues that are hard to see from inside the company.
Yes. Many engagements focus on a single high-impact area such as onboarding, checkout or a dashboard, with the design system built so it can extend to the rest later.
We design with implementation in mind, use your existing framework and component constraints where they exist, and stay available during development to answer questions.
Always. We design to WCAG 2.2 AA as a baseline — colour contrast, focus states, touch target sizes and screen-reader-friendly structure are part of every project.
App design starts at $500. The cost depends on the number of screens and user flows, whether you need research and testing, and whether a design system is part of the work. We send a fixed, itemised quote once we understand the product. For the cost of the whole app, see our app development cost breakdown.
The timeline follows the scope. A single flow or a small first version is quick. A full product with many screens takes longer. We set out the phases and dates in the proposal and share work in progress throughout.
Yes. We design for iOS and Android, following each platform's conventions, and for cross-platform builds in Flutter or React Native.
Yes. You receive the Figma files with every screen and state, a design system with reusable components and styles, and notes on spacing and behavior. We also walk your developers through the handoff.
Yes. We work with startups in California, New York, Texas and across the United States. We are based in Sheridan, Wyoming, and run projects remotely with regular reviews.
Practical UI/UX principles for business websites: clear navigation, readable layouts, accessible forms, fast pages and calls to action that convert.
A step-by-step UX audit process for SaaS products: goals, analytics, heuristic review, user sessions and a prioritized fix list your team can act on.
Related services
Fast, secure, search-ready websites and web apps engineered to perform from launch day onward.
Native-quality iOS and Android apps, from first prototype to App Store launch and every update after.
Manual and automated testing that catches bugs before your customers do and makes release day boring.
Start your ui/ux design project
Tell us about your goals and we will come back to you with ideas, a recommended scope and an honest estimate for your ui/ux design project.