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FirstApp x Gemeos

Design, development, and SEO for the app agency that turns first-time founders’ ideas into profitable mobile products.

To make that journey easy to follow, FirstApp brought in our web agency for startups.

Laptop showing the FirstApp offers page: three plans priced at €11,000, €25,000 and €50,000

First app, first revenue

FirstApp supports first-time creators from idea to their app’s first revenue. A tight-knit team. A clear process. One goal: launch fast and launch right.

Gemeos designed the site to reflect that identity: direct, ambitious, human, with the black and orange palette that’s already become the brand’s signature.

Services
UX/UI Design
Development
SEO
firstapp homepage on desktop and mobile, headline "Bien plus qu'une app." and client logos, orange background

A site that matches the product: direct, ambitious, human

firstapp supports first-time founders from idea to first revenue. Their site had to capture that mindset: direct, effective, no fluff, but with real personality. The Gemeos team designed a look and feel that reflects the agency’s culture, a crew of friends with serious skills, without falling into the trap of an institutional brochure site.

The information architecture was built to convert entrepreneurial profiles. In just a few seconds, visitors need to understand what firstapp does, why it’s different, and what to do next. The homepage follows a clear narrative: promise → proof → real-world examples → action. Every section answers a question visitors are asking as they move through the page.

Art direction: black, orange, energy

firstapp is already known for its black-and-orange palette, a strong identity that Gemeos expanded and structured. Two creative directions were proposed: one fully committed to dark mode, the other with a more balanced approach. The relaxed tone and informal voice show up in every typographic and editorial choice.

The design system built in Figma formalizes that identity: colors, typography, components, interactive states. The high-fidelity mockups cover every page, mobile state, and animation, adding rhythm to the experience without slowing down load times.

  • firstapp pricing page mockup: “How much does it cost to build a mobile app with firstapp?” headline in French
  • FirstApp testimonial card on orange: “firstapp isn't an agency that delivers…”, Clément, co-founder
  • FirstApp illustration: phone wireframe on orange background, a block being moved by a cursor labeled “firstapp”
  • FirstApp website section “On est ceux qui pensent à ton business” with three numbered cards, on orange background
  • FirstApp website case studies section: three mobile app cards for Nutria, Jobs that Makesense and Jam
  • FirstApp website case study card: Jobs that Makesense, phone mockup reading “Fais matcher ton taf avec”
  • FirstApp "Abonnement" (subscription) offer card with { SUR MESURE } tag and black and orange "Learn more" button
FirstApp mobile site on iPhone: “Our apps generate downloads” section and Nutria case study

Webflow Build: Fast, Independent, High-Performance

True to firstapp’s philosophy, ship fast, don’t cut corners, the Webflow build followed the designs closely while prioritizing performance and client ownership. firstapp needed to update the site easily, without going through the agency for every content change.

The build covers the responsive layout, desktop, tablet, mobile, plus scroll animations, hover interactions, and micro-animations that bring the page to life. Technical performance was optimized from the start: WebP images, lazy loading, and subset fonts for fast load times on mobile.

A Solid Technical Foundation for Growth

The site was structured to scale as firstapp grows: new case study pages, new offers, new content. The Webflow CMS was configured to let the team add content without technical help, and the page templates are documented to make future expansions easier.

  • firstapp pricing page on a laptop: “How much does it cost to build a mobile app with firstapp?” headline
  • Smartphone showing the FirstApp mobile site: The Method section, “Building an app is a step,” and Build stage
  • Laptop showing the FirstApp pricing page "Trois offres. Trois réalités." with plans at €11,000, €25,000 and €50,000
  • firstapp mobile homepage on an iPhone, headline "Bien plus qu'une app." and orange button, on orange background
  • Laptop showing the FirstApp website case studies section: Nutria, Jobs that Makesense and Jam Solidaire
firstapp blog wireframes: article page with table of contents and “Le blog” page with popular articles

SEO for a Startup App Agency Building Authority

firstapp is a young agency with big ambitions: to become a go-to name in its niche, launching mobile apps for first-time creators. The SEO strategy was built to support that growth, targeting accessible queries in the short term while laying the groundwork for a lasting presence on more competitive keywords.

The audit identified a clear positioning opportunity around “build an app,” “mobile app development agency,” “launch a mobile app,” and long-tail variations around monetization and ASO. These queries match strong commercial intent, aligned with firstapp’s personas.

On-Page Optimization and Technical SEO

On-page optimization integrated strategic keywords into the page structure without sacrificing natural readability or the direct tone that defines the brand. Title tags and meta descriptions were written to maximize click-through rates from the SERPs.

Technical SEO, load speed, URL structure, schema markup, redirect management, was built in from the development phase, in collaboration with the dev team, to make sure every optimization was properly implemented from day one.

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