Svelte development
services that fly

Depends on application complexity and integration count. A marketing site or content-driven site in SvelteKit with prerendering, CMS integration, and a clean component library: €15.000 to €30.000. A web application with SvelteKit, server-side rendering, user authentication, 3 to 6 integrations, and a real data layer: €30.000 to €60.000. Complex applications with custom dashboards, real-time features, multiple integrations, or migration from a legacy frontend: €50.000 to €100.000+. Hourly rates run €60 to €65 across frontend engineering, architecture, and project management. Svelte projects sometimes cost slightly less than equivalent React projects because the smaller framework footprint and built-in reactivity reduce boilerplate, though the difference is project-specific, not a guarantee. Our pricing page covers the broader rate structure.

Svelte fits well in specific cases, and it is not always the right answer. Svelte makes sense when: bundle size and first paint matter (marketing sites, content sites, apps targeting low-end devices or slow networks), the team values readable code without heavy abstraction, the project is greenfield (no existing React or Vue codebase to extend), and the feature set does not depend on a large third-party component ecosystem. React still makes more sense when: the project needs a mature ecosystem of ready-made components (complex data grids, charting libraries, design systems), the team or client already has React expertise and wants to keep hiring from a large talent pool, or the application depends on React-specific libraries with no Svelte equivalent. Vue sits between the two. The honest tradeoff with Svelte: smaller talent pool than React, fewer ready-made libraries, so more gets built from scratch. For a performance-focused greenfield project that is a fair trade. For a large enterprise app that needs to hire 20 developers next year, React is often the safer call. We build in all three and recommend based on the actual project, not framework preference.

Svelte is the component framework, the part that compiles your components into lean JavaScript. SvelteKit is the application framework built on top of Svelte, the part that handles everything around the components: file-based routing, server-side rendering, prerendering, API endpoints, data loading, and deployment adapters for different hosting platforms. For a simple embedded widget or a component added to an existing site, plain Svelte is enough. For a full website or web application, SvelteKit is almost always the right choice, since it provides the routing, rendering strategy, and server-side capabilities a real application needs. Most Studio Ubique Svelte projects use SvelteKit. The render strategy decision (server-side rendering, prerendering, or client-side rendering per route) happens during discovery, based on whether a route needs fresh data on every request, can be built once at deploy time, or works fine rendering in the browser.

Yes, though whether you should is a separate question worth discussing honestly. Frontend migration to Svelte makes sense when: the current frontend has genuine performance problems that profiling traces back to framework overhead, the existing codebase is small to mid-size (a full rewrite of a large app rarely pays off), or the current code is already due for a rebuild for other reasons. Migration usually does not make sense purely to chase Svelte’s benefits if the current frontend works fine, since a working React or Vue app rarely justifies a full rewrite on performance grounds alone. Standard migration approach: audit the existing frontend, rebuild route by route in SvelteKit while the old app stays live, run both in parallel behind a routing layer, cut over per section once verified, decommission the old frontend after a verification period. Migration scope depends heavily on application size and how much business logic lives in the frontend versus the backend, typically €20.000 to €70.000. For a small frontend a clean rebuild is often faster than a careful migration.

A fair question, and worth being honest about. Svelte is a mature, stable framework with strong adoption among developers, consistently high satisfaction scores in the State of JS survey, and active maintenance. Svelte 5 brought a significant update to its reactivity model. The framework is not going away. The genuine risk is not Svelte’s survival, it is the talent pool. There are fewer Svelte developers than React developers, so if your plan is to hire a large in-house frontend team quickly, React gives you a deeper hiring market. For a project built and maintained by an agency, or a small in-house team, that risk is limited. Studio Ubique mitigates it two ways: SvelteKit code is readable enough that a competent React or Vue developer can become productive in it within a couple of weeks, and we provide ongoing support through Care, Growth, or Partnership packages so you are not dependent on finding Svelte specialists on short notice. If long-term in-house Svelte hiring is a real concern, we will say so during discovery rather than after launch.

Standard 30-day post-launch monitoring and bug fixes window after go-live. During this window: regular check of Core Web Vitals and error logs, review of any anomalies, immediate response to broken functionality during business hours. After 30 days, ongoing support moves into one of the Care, Growth, or Partnership packages. Svelte projects need active maintenance like any other: Svelte and SvelteKit ship updates (Svelte 5 was a major one), dependencies update with breaking changes, and bundle drift sets in as features get added. Bundle drift is the Svelte-specific maintenance item worth watching: the framework starts lean, but small additions stack up over months until the performance advantage erodes. Monthly check-ins under Growth or Partnership packages track bundle size against budget so this gets caught early. New features and additional routes get scoped as separate sprints. Automated monitoring runs 24/7, human response during business hours.