Mobile-First UX Prototyping
Discover how to design mobile-first prototypes that optimize your users' purchase route.
At SEO7, with 8 years of experience, we know that 70% of online purchases start on mobile (Statista). That's why mobile-first UX prototyping is key to mapping each user step. In this article, we show you how to do it with real tools and concrete data.
Mobile-first UX prototyping for mapping the purchase route consists of designing the mobile experience first, identifying each user touchpoint up to conversion. At SEO7 (Valencia) we use Figma to prototype, conduct user tests, and optimize with real data. 70% of purchases start on mobile, so this approach is critical to increase sales across Spain.
In this article, we will break down the mobile-first UX prototyping process applied to mapping the purchase route. First, you will understand why the mobile-first approach is indispensable today: more than 60% of ecommerce traffic comes from mobile devices (Think with Google). Then, we will show you how to identify friction points in the customer journey and how to create rapid prototypes with Figma. Additionally, we will include a practical case with data from an online store in Valencia that increased its conversion by 25% after redesigning its mobile purchase route. Finally, we will answer frequently asked questions about tools, timelines, and costs.
To prototype a mobile-first purchase route, first research your users' behavior. According to a Think with Google study, 53% of users abandon a site if it takes more than 3 seconds to load. Therefore, prototyping must prioritize speed and simplicity. At SEO7, we follow these steps: 1) Define the purchase route objectives. 2) Create a customer journey map with key touchpoints. 3) Design wireframes in Figma, starting with the mobile view. 4) Add interactivity with linked prototypes. 5) Conduct usability testing with 5 users (enough to detect 85% of problems, according to NN Group). 6) Iterate based on feedback. 7) Validate with metrics like conversion rate and cart abandonment. 8) Implement the final design with responsive frontend development.
There are several tools for mobile-first UX prototyping, but the most used are Figma, Adobe XD, and Sketch. Figma stands out for its real-time collaboration and versatility. According to a UX Tools 2023 survey, Figma is used by 87% of UX designers. For mapping the purchase route, it is crucial that the tool allows creating interactive prototypes and sharing them easily. At SEO7, we recommend Figma for its integration with testing tools like Maze. Below is a comparison table with the main options.
| Tool | Price | Collaboration | Interactive Prototyping |
|---|---|---|---|
| Figma | Free (basic) / $12/month (professional) | Yes, real-time | Yes, with animations |
| Adobe XD | Free (basic) / $9.99/month (CC) | Yes, via links | Yes, with transitions |
| Sketch | $99/year (individual license) | Yes, with plugins | Yes, but limited |
To measure the success of a mobile-first prototype, focus on usability and conversion metrics. Task success rate is the most important: if users complete the purchase without issues, the prototype works. Other key metrics are time per task, error rate, and user satisfaction (measured with SUS). According to a McKinsey study, companies that optimize user experience increase revenue by 10% to 15%. Additionally, it is recommended to conduct A/B testing with the prototype against the current design to validate improvements. At SEO7, we use tools like Google Optimize and Hotjar to collect quantitative and qualitative data.
«A prototype works if a person completes the path without once asking what to do next. Everything else is taste, and taste can be argued about forever.»
Mobile-first UX prototyping is essential to optimize the purchase route, as 70% of online purchases start on mobile. At SEO7, with 8 years of experience and over 20 technologies, we guide you step by step: from user research to validation with A/B testing. We use Figma as the main tool and measure success with metrics like task success rate and conversion. Remember that a well-designed prototype can increase your sales by up to 25%. If you need help, contact us and we will respond within 24-48 hours.
From a 12-page website to a 50-page corporate portal with CMS, from €450. Responsive layout, design and copy included, plus domain and hosting for the first year. A Start website is live in 3-5 days, Pro in 14-21 days and Max in 21-30 days.
The three tiers differ in volume, not in quality: 12, 30 or 50 pages and how deep the design work goes. The tech stack, loading speed and SEO groundwork are identical everywhere; we don’t cut corners on foundations. The site stays yours: domain, hosting and every login are registered in your name. A package costs less than the same work bought piece by piece: from 27 % on Start to 38 % on Max.
A short brief, and we’ll come back with a plan and quote within 24-48 h. No pressure.
It is designing first for mobile devices, ensuring the experience is optimal on small screens, and then adapting it to desktop.
Because most users buy from mobile; poor design can lead to cart abandonment.
Figma is the most used (87% of designers), followed by Adobe XD and Sketch. All allow interactive prototyping.
Depending on complexity, a basic prototype can be ready in 1-2 days with tools like Figma.
By conducting usability testing with 5 users, observing if they complete key tasks and collecting feedback.
Task success rate, time per task, error rate, and user satisfaction (SUS).
No, tools like Figma require no code. You only need UX design knowledge.
By exporting designs to HTML/CSS format or using plugins that generate code automatically.
Not prioritizing key content, ignoring performance (load speed), and not testing with real users.
At SEO7.ES websites start at €450 incl. IVA (SEO7 Start package), and we give the exact estimate before we start.
It improves user experience, reducing bounce rate and increasing time on page, factors Google values.
Yes, at SEO7 (Valencia) we perform mobile-first UX prototyping for clients throughout Spain.
We respond within 24-48 hours, with a first free analysis of your project.
