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Expo Go, the Expo SDK, Expo Router, and EAS are related, but they are not the same product—and none of them is a new programming language. Expo is an open-source framework and tool ecosystem for building React Native apps. You can use the parts that help your project without signing up for every Expo service.
What is Expo?
Expo brings together tools for developing React Native apps that run natively on Android and iOS, as well as on the web. Its framework includes an SDK of native modules, command-line tools, Prebuild, and development options such as Expo Go. These pieces coordinate common app-development tasks around React Native rather than replacing React Native itself. See Expo’s core concepts and its development workflow overview.
An “Expo app” is a React Native app that uses Expo tools. One project might use a single Expo package; another might use several tools together. Using Expo does not require using every part of its ecosystem.
Why does Expo exist?
React Native apps need to connect JavaScript code with native platform capabilities. Expo provides a coordinated set of native modules and development tools for that work, so a developer can choose from established building blocks and workflows rather than assembling every piece independently. The project remains a React Native app, and the Expo tools used can vary by project.
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- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
That distinction matters when choosing a workflow: the framework and tools are not the same as a particular app runtime or a cloud build service. Expo Go is one runtime option for learning and quick experiments; a development build is a customizable app build for ongoing development. EAS is a separate, optional services suite.
What is Expo Go?
Expo Go is a prebuilt app that acts as a playground for running a project’s JavaScript. It contains a fixed set of native libraries, so JavaScript in the project can use native functionality already included in Expo Go. It cannot gain a newly added native library just because the project’s JavaScript bundle changes. Expo describes this distinction in its development builds FAQ.
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- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
That makes Expo Go convenient for learning and trying ideas, but it is not a universal runtime for every app. If a project needs a native library or configuration that Expo Go does not contain, you need an app build that includes those project-specific native parts.
Expo Go vs. a development build
| Aspect | Expo Go | Development build |
|---|---|---|
| Best suited to | Learning and quick experiments | Ongoing, production-oriented app development |
| Native libraries | Fixed set bundled with Expo Go | Can include the project’s native libraries |
| Native configuration | Limited to what the prebuilt app supports | Can use configuration specific to the app |
| Role in development | A quick way to run JavaScript against an existing native runtime | The app’s own customizable runtime, suitable for the full development and release cycle |
A development build is a build of your own app, with the native libraries and configuration that project needs. Expo recommends this approach for production-oriented development; Expo Go still has a useful role when learning or prototyping.
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- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
When should you move from Expo Go to a development build?
Start with Expo Go if you are learning React Native with Expo or want to try an idea using the native libraries it already contains. Move to a development build when the app needs a native dependency or app-specific native configuration that Expo Go cannot provide, or when you are building with a production-oriented workflow.
Can you use Expo with an existing React Native app?
Yes. Expo tools and EAS can be added to an existing React Native project; starting a new Expo project is not a prerequisite. The exact changes depend on the tools you choose. Expo’s overview of using Expo with existing React Native apps explains this path.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Is EAS the same as Expo, and is it mandatory?
No. Expo is the framework and tool ecosystem; Expo Application Services (EAS) is a complementary suite of services for tasks such as building, submitting, and updating apps, as well as hosting and workflow needs. EAS is optional: Expo framework tools are free to use independently, and a project does not have to use every EAS service. See the EAS overview.
EAS Build creates installable Android and iOS binaries using hosted builds. If you prefer to compile on your own machine, local builds are another route and use the local platform toolchains. The choice is whether you want to manage those native build tools locally or use hosted builds—not whether your app is an Expo app.
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- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Which Expo path should you choose?
- Learning or quick prototype: Use Expo Go if its bundled native libraries cover what you want to try.
- App-specific native needs or production-oriented development: Create a development build so the runtime can include your project’s native libraries and configuration.
- Existing React Native app: Adopt the Expo tools that fit the project; you do not need to replace it with a new project.
- Building Android or iOS binaries: Choose EAS Build for hosted builds or local compilation with the platform toolchains. EAS is not a requirement for using Expo.
For current setup steps, follow Expo’s project-creation guide or the documentation for the workflow you choose; commands and setup details can depend on the current SDK and project configuration.
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