Wix Legend Partner · Wix app development
Our Wix app developers build apps that install on Wix sites — dashboard tools, site widgets, checkout and booking logic, and integrations for SaaS products — whether you need a private app for your own sites or a paid listing on the Wix App Market.
Wix Legend Partner · 2,000+ projects since 2014 · 1,400+ client reviews
A Wix app developer builds software that runs inside Wix rather than on a single site: dashboard pages, site widgets, backend logic and connections to Wix Stores, Bookings and other business apps. Apps can stay private to your own or your clients' sites, or be published on the Wix App Market for any Wix user to install, free or paid.
Build a feature once and install it on every site that needs it. Private apps install on any site you own or collaborate on — from your Wix Studio workspace or an install link — with no App Market review.
Wix App Market app development from first spec to live listing: extensions, permissions, OAuth, pricing plans, listing copy and screenshots, and the submission itself.
Admin tools in the site owner's Wix dashboard, built with React and the Wix Design System so they look native. Dashboard plugins can also slot into Wix's own screens, such as a panel inside a Wix Stores or Bookings page.
Draggable widgets site owners place on their pages, and scripts injected into a site's HTML for tracking or chat. We build widgets as custom elements with the Wix CLI so they work on Wix Editor, Wix Studio and Wix Harmony sites.
Custom shipping rates, checkout fees, discount triggers, tax calculation, form validation and booking rules, injected into Wix's own flows through service plugins — plus event handlers and custom Wix Automations triggers and actions.
A Wix integration puts your SaaS product in front of Wix users. A self-managed app — Wix's current name for a self-hosted app — runs on your infrastructure: you register its iframes, webhooks and endpoints in the Wix app dashboard and sync data through Wix's REST APIs. Building the product itself? See SaaS development.
As Wix Blocks developers, we maintain and extend existing Blocks apps. One catch: Blocks site widgets and plugins don't install on Wix Harmony sites. To reach Harmony users, we rebuild those widgets with the Wix CLI and, as Wix suggests, add the new version as an extension inside your existing app so you keep your reviews and installs. We also move apps off the Legacy Wix CLI for Apps, which no longer receives updates.
Free, freemium, premium and usage-based plans (usage-based billing needs App Market approval). Wix handles billing, but your app must check each site's plan and enable or restrict features to match. We build that logic and the upgrade prompts.
Through Wix's App Tools extension, Aria — the AI assistant in the Wix dashboard — can run your app's key actions for site owners.
Wix offers three frameworks, and one app can mix them — each extension can be built a different way.
| Wix CLI | Self-managed | Wix Blocks | |
|---|---|---|---|
| Hosting | Wix cloud, no extra cost | Your own servers | Wix cloud, no extra cost |
| Stack | TypeScript, React, Wix Design System, your IDE and git | Any language and framework | Visual editor plus Velo in an online IDE |
| Site widgets on Wix Harmony | Supported | Supported | Not supported |
| Best for | Most new apps | SaaS companies with an existing backend | Quick widgets for Wix Editor and Studio sites; existing Blocks apps |
Our default for new apps is the Wix CLI, as Wix recommends. We go self-managed when your app needs your own backend — some service plugins, such as payment providers, require it.
If a feature only ever needs to run on one site, an app is usually overkill. Velo code on that site is simpler and cheaper — see our Wix Velo development service.
Wix Engine is a Wix Legend Partner, the highest level of the Wix Partner Program, with 2,000+ projects delivered for clients in 15+ countries.
Most of our work is building Wix and Wix Studio sites for real businesses, so we see how site owners install and judge apps. That shapes everything from onboarding screens to default settings.
New apps go on the Wix CLI, and we check each extension against Wix Harmony compatibility so your app can reach users on all three Wix editors.
Once the project is paid in full, the app is yours: it's registered in your Wix developer account and the code lives in your git repository, with documentation.
Your idea, who installs it, and which Wix products it touches.
The extensions your app needs, the framework for each, the permissions it requests, its pricing model and a fixed price or estimate.
Wix provides premium development sites for app testing. We build with live reload and test on Wix Editor, Wix Studio and Wix Harmony sites where relevant.
OAuth, permissions, webhooks, error handling, plan gating and listing assets, checked against Wix's App Market guidelines.
For listed apps, Wix runs an automated AI review that usually returns results within minutes; we fix any blockers and resubmit. Private apps go straight onto your sites.
New releases, Wix API changes and user support, monthly or hourly. Agencies needing ongoing capacity can hire a dedicated Wix developer.
Elavon Europe payment gateway for Wix A client needed to take payments on their Wix site through Elavon Europe. We built a custom payment provider integration with Wix's Payment Provider service plugin (SPI), including the API endpoints and webhooks that pass payment status back to Wix.
Automatic e-receipts through eParagony For a Wix site selling pricing plans, every purchase now creates a fiscal e-receipt through the eParagony.pl API, and the customer gets the receipt link by email automatically. No one on the client's team has to issue receipts by hand.
“Very professional developer! Sohaib successfully built a complex backend integration for Elavon Europe Payment Gateway using custom Wix Payment Provider SPI. He handled all the API endpoints, and webhook configurations perfectly. Great communication and deep technical knowledge. Project delivered quickly!”
Wix app development with us starts from $1,000. A private app with one dashboard page costs far less than a public app with several extensions, billing and a market listing.
What drives the cost:
We work on fixed-price projects, monthly retainers and hourly at $45/hour (minimum 40-hour block). Send us your app idea and you'll get an estimate within 48 hours.
Create an app in the Wix app dashboard, build its extensions — Wix recommends the Wix CLI for most apps — and test it on a development site. Then set up pricing if it's paid, prepare your market listing and submit it. Wix's automated review checks the app against the App Market guidelines before it goes live.
Wix Blocks is a visual editor for building app widgets and dashboard pages, with logic written in Velo. The Wix CLI is code-first: TypeScript and React in your own IDE, with git and local testing. Wix hosts both. The key difference today is reach — CLI site widgets work on Wix Harmony, Blocks site widgets don't.
Yes. A private app can be installed on any Wix site you own or collaborate on, through your Wix Studio workspace or an install link, and it skips App Market review. Agencies use private apps to share one feature across many client sites and update it in one place.
Wix handles billing and pays developers monthly. Under Wix's current published terms, you keep 100% of sales revenue in your first year and 80% after that, calculated after a 2.5% transaction fee and sales tax. Your app is responsible for checking each site's plan and limiting features to match. Wix can change these terms, so check its developer documentation for the current figures.
Usually minutes. Wix runs an automated AI review when you submit and publish an app. If it doesn't pass, blockers appear in your app dashboard; you fix them and submit again. If you disagree with a blocker, you can appeal through Wix support. Later updates are released as new versions without a fresh review.
It depends on the app's extensions. Dashboard extensions, backend extensions and site extensions built with the Wix CLI or self-managed all work on Harmony. Wix Blocks site widgets and plugins and legacy custom elements don't, and legacy iframe widgets have partial support. Those apps still work on Wix Editor and Wix Studio sites.
You do, once the project is paid in full. The app is registered under your Wix account, the code sits in your own repository, and you receive documentation so any developer could maintain it after handover. We can sign an NDA before you share your idea.
Book a free 30-minute call. We'll map your idea to Wix extensions, flag any App Market hurdles and send a detailed proposal within 24 hours.
Wix Legend Partner · 2,000+ projects since 2014 · 1,400+ client reviews
