The 10 Best Mobile App Prototyping Tools in 2026

When you’re building a prototype, sometimes the best tool to start with is a simple one: a pen and paper.

But when you’re ready to go digital, finding the right mobile app prototyping tool requires special considerations that web prototyping tools often miss, like:

• Mobile-first design elements and components
• Native-responsive interactions
• Multi-platform and mobile device previews
• User flows and conditions for mobile devices

Take Bubble as an example. It lets you generate native iOS and Android apps with AI — complete with UI, workflows, and data — all visually, without code. But under the hood, they're powered by the industry standard React Native, which means your apps access native device features like camera, push notifications, and biometric authentication. You can test your app on real devices with BubbleGo, then launch directly to the Apple App Store and Google Play Store with one click — no Xcode or Android Studio required. You're not building a prototype that needs rebuilding. You're building the real app from the start, ready to ship to actual users.

If you’re building a web app, check out our favorite tools for prototyping web apps. If you’re building a mobile app, read on for the best prototyping tools for mobile.

What kind of mobile app prototyping tool do you need?

First things first: In order to find the right tool for your project, you need to know what kind of prototype you're making. There are two main levels of prototyping: low-fidelity and high-fidelity.

Wireframing is helpful for communicating big ideas and sketching out basic screens and user flow, but at some point, you’ll need to build a high-fidelity prototype. 

High-fidelity prototypes allow you to go deeper into design and function for valuable user feedback.

In our analysis and reviews, we’ll point out which type of prototyping each tool is best for, so you can choose the right one for your needs.

Our top mobile app prototyping tools

TL;DR: Here are our top recs for each level of prototyping:

Best for low-fidelity wireframing: Balsamiq. Balsamiq is one of the best collaborative wireframing tools out there. It’s simple to learn (aka your whole team can use it!). It’s perfect for brainstorming or showing off user flow and product concepts to your team or stakeholders.

Best for high-fidelity prototypes: Figma. Figma is the gold standard of design tools, and it works well for prototyping too. You get access to well-known (and easily exportable) design tools to focus on the UI and UX of your mobile app. Plus, you can use animations and interactions to easily show how functionality will work.

Best for the full spectrum of prototyping (and beyond): Bubble. Bubble covers every stage — from basic wireframes to pixel-perfect designs — and then keeps going. Generate a working app with AI in minutes (UI, database, workflows, and logic included), or import your Figma designs and let AI help you add functionality without rebuilding from scratch. Either way, you end up with a full-stack app you can refine in the visual editor and publish directly to the Apple App Store and Google Play Store with one click.

The best mobile app prototyping tools (comparison table)

We analyzed some of the top prototyping tools with an eye to the mobile app design process to find the best options for every stage of the prototyping process.

What to look for in a mobile app prototyping tool

So, which prototyping tool is right for you?

That depends on what you need from a prototype:

• Are you looking to do early testing to validate your idea?
• Are you hoping to communicate your idea to stakeholders?
• Do you want to test out the feasibility or functionality of core concepts with your team?
• Are you looking to nail down detailed designs and user journeys before you start building?

Once you determine exactly what you need, you can compare all the tools based on the mobile app prototyping features that are most important to you. Some features to look for include:

• Multi-platform previews: Choose tools with device testing capabilities, like BubbleGo, that let you test actual functionality (workflows, data, and native features) on your device, making iteration and bug testing faster.
• Interactive elements: Look for tools that generate working functionality — workflows, databases, and logic — not just visual mockups. Built-in mobile app design elements and animations are key for user testing, functionality validation, and stakeholder input.
• Rapid iteration: Does the tool allow for easy and collaborative changes and iterations based on your testing and learning? Or do you have to rebuild, even switching to another platform, as you make your prototype more and more detailed?
• Templates and libraries: Does the tool provide templates and component libraries so you can design more quickly, or are you building everything from scratch? Do component libraries include mobile-specific icon libraries and components?
• User testing tools: If you’re doing user testing of your prototype, does the tool make it easy for users (or even internal teams) to test your prototype on the actual device they’ll be using it on? Can you easily gather user feedback and insights to iterate?
• Timeline: How fast can you build on this tool? And how far can it take you? Some tools are quick to build on but limited to simple prototypes that have to be discarded quickly. Others offer more high-fidelity designs but take longer to build on.

Also, keep in mind that not every prototyping tool is designed with mobile apps in mind. When prototyping an app, pay close attention to whether tools offer multi-platform previews and testing, mobile-first interactive elements and UX features, and app-specific icon libraries and templates.

So, which tool is right for you? Here are our recommendations:

• For quick and simple wireframing to validate or communicate early ideas: Try Balsamiq, Mockplus, Proto.io, or UIzard
• For detailed UI design: Try Bubble or Figma
• For functionality, feasibility, or user journeys: Try Bubble, Glide, or Justinmind
• For user testing: Try ProtoPie or Marvel
• For building and launching production-ready apps from the start: Bubble

Deep dive: Prototyping tool overviews

Got an idea of which tools might be best for you? Take your shortlist and dive into our tool reviews to see which one makes the most sense for your needs.

Bubble: Best for going from prototype to fully-functional native app — without starting over

One of the biggest drawbacks of most prototyping tools is that your prototype has a short shelf life. Ideas get validated, feedback gets collected, and then the whole thing gets thrown out when your dev team starts building the real product.

Bubble is different because your prototype is the product. Describe your app and Bubble AI generates a complete, working foundation in minutes — UI, database, workflows, and logic included. From there, the visual editor gives you full control to refine any detail, from design to privacy rules to programming logic. If you've already designed in Figma, import those files and add real functionality without starting over.

Either way, you're never simulating how your app will work with fake interactions. You're building the actual thing — real native mobile functionality you can test on actual devices with BubbleGo as you go.

When you're ready to ship, publish directly to the Apple App Store and Google Play Store with one click. No Xcode, no Android Studio, no handoffs.

Pricing:

Bubble is a free prototyping tool.

Paid plans start at $29 monthly to launch your mobile app directly to the Apple App Store and Google Play Store.

Balsamiq: Best for low-fidelity designs and brainstorming

While other prototyping tools focus on advanced designers who want to build prototypes that look like the final product, Balsamiq focuses on low-fi prototypes. If you just need a quick sketch to map out your ideas, communicate concepts, and refine your plan before moving into the design process, Balsamiq is a great solution.

Essentially, Balsamiq makes pen-and-paper designs digital and collaborative. Multiple users can work on the web-based tool to sketch out basic user interfaces and screens. It offers basically zero learning curve, and has plenty of pre-built UI elements so you can move even faster.

An intentionally low-fidelity wireframe can help you focus on the user flow, UI elements, and product concepts.

Pricing:

Balsamiq offers project-based pricing with both Business and Enterprise tiers:

Up to 2 Projects: $12 (Business) / $18 (Enterprise) per month

Up to 5 Projects: $22 / $33 per month

Up to 10 Projects: $34 / $51 per month

Plans can accommodate up to 400 projects. Enterprise pricing includes more security options, including SSO, Enterprise SLA, and other security assistance.

Figma: Best for design-first prototypes

Figma is currently the gold standard for design tools, in part due to its intuitive design platform and its advanced UX design capabilities. When you're at the stage where you need to focus on the look and feel of your app, Figma is a great way for your design team to focus on UI details.

You can't build true functionality in Figma. However, you can create user flows, animations, interactions, and more using Figma's interaction design tools. They even support variables and conditional logic to bring your prototype closer to how your existing product will work.

When you're ready to turn your Figma prototype into a fully-functional mobile app, use Bubble. You can import your Figma designs into Bubble in just a few clicks. Then use Bubble's no-code, visual editor designed for mobile to add workflows, databases, and real native mobile functionality. Even better: You can submit and launch your mobile app to the Apple App Store and Google Play Store right from the Bubble editor.

Pricing:

Figma offers four plans:

• Free: For individuals who need basic prototype design tools
• Professional: $16 per user per month (for small teams and more advanced prototyping)
• Organization: $55 per user per month (for unlimited teams and centralized assets)
• Enterprise: $90 per user per month (for custom workspaces and advanced features and security)

ProtoPie: Best for user testing your high-fidelity prototypes

ProtoPie is an advanced prototyping tool that lets you create some of the highest-fidelity prototypes available, especially for mobile apps. It's a popular choice among teams who want to test prototypes with real users.

When you're creating your prototype on ProtoPie, you can use all kinds of advanced interactions to make your prototype more realistic. ProtoPie supports dynamic interactions, logic and variables, conditionals, mobile gestures, using native device sensors, and more. This makes it easier to get in-depth user feedback. The downside is that you have to design all this functionality twice (once for the prototype animation, and once when you're building your functional app).

When you're ready to test with your team or your potential users, ProtoPie lets you send custom links to your prototype that can be viewed on any device. It also has the capability to customize your prototype for any device's screen. That includes mobile, tablet, and desktop devices. ProtoPie also supports smartwatch prototyping for Wear OS devices.

Use it for: high-fidelity mobile app prototyping and user testing

Pricing:

ProtoPie offers four plans:

Free: For creating unlimited prototypes but storing only up to two prototypes on the cloud

Basic: $25 / month for up to 20 prototypes on the cloud with a maximum of 10 scenes per prototype

Pro: $47 per editor per month for unlimited projects

Enterprise: custom pricing for advanced features and security, built-in user testing, and more

Glide: Best for rapid prototyping with internal data

For a simple solution for rapid prototyping, Glide is great for creating mobile apps based on internal data sets or databases. Since launching in 2019, Glide has helped over 100,000 companies build software, making it a reliable choice for operations teams. It's fantastic for creating mobile-friendly tools based on data you already have in Google Sheets, Excel, or Airtable. You can even use Glide AI to generate an app structure from a simple text prompt.

Although these aren't native apps, Glide apps are Progressive Web Apps (PWAs). They look great on mobile, but they live on the web. You won't be able to publish to the Apple App Store or Google Play Store, which limits their use for consumer-facing products. That said, when you're prototyping an internal tool using already-existing datasets, Glide is a fast way to get a functional prototype up and running for testing.

Another factor to consider is pricing structure. While powerful, Glide's pricing can get complicated as you scale. Their Explorer plan starts at $25 per month, Maker at $60 per month, and Business at $249 per month. Keep an eye on your plan limits—Glide charges based on "updates" and private users, which can get pricey as your internal team grows.

Pricing:

Glide offers multiple plans:

Free: For basic use with limited features

Explorer: $25 per month

Maker: $60 per month

Business: $249 per month

Enterprise: custom pricing for more data storage and users

Justinmind: Best for advanced mobile app prototypes

Sometimes when you create prototypes, it's best not to get lost in the design system and instead focus on the components, functionality, and core features.

Justinmind lets you do just that. Their extensive library of gestures and effects lets you work from existing templates and components. You can move faster while still creating a clean interface. It also has advanced emulators, conditions, and sequences to make your prototype perform as close to the real thing as possible.

It also supports wireframing with drag-and-drop, pre-built UI elements. So whether you want a quick-and-dirty wireframe for a proof of concept, or a more functional prototype you can test with users, you can work on it with Justinmind.

Pricing:

Justinmind offers four plans:

Free: UI design and wireframing only

Standard: $19 per editor per month

Professional: $19 per editor per month

Enterprise: $39 per editor per month

Mockplus: Best for templated mobile app design

When you don't want to get bogged down in design details, Mockplus has a massive template library you can work from to get your prototype out there faster. Their entire platform is designed around helping your team prototype and iterate quickly.

With hundreds of mobile app templates and a large library of pre-built assets, icons, components, and widgets, design teams can build prototypes in hours, not weeks or months. Advanced animations, interactions, and flowcharts help you communicate and visualize user journeys and tool functionality.

Whether you want to build a low-fi or high-fi prototype, working from a template will get you there quicker. Plus, you can validate and test your ideas before you invest in a ton of design and development resources.

Pricing:

Mockplus offers different pricing for its various products (Mockplus RP, Mockplus Classic, Mockplus DT):

Free: With limitations on users and prototypes

Ultimate: Pricing varies by product; verify current pricing on the official pricing page

Enterprise: custom pricing for advanced features and security

Marvel: Best for quick prototyping with built-in user testing

Marvel is a good option for quick and basic prototyping or wireframing. Its editor is pretty similar to others on this list, like Mockplus. If you're familiar with basic web builders like Wix or Weebly, you'll find some similarities here too.

Where Marvel really stands out is with its built-in user testing features. Build your prototype in Marvel, then invite users to test your design. You can see how they use and move through your app prototype with in-app comments and screen and audio recordings. You can also import designs from Sketch to Marvel, which makes it a good fit if you're already using Sketch for your design team.

Pricing:

Marvel offers four pricing tiers:

• Free for one project and one user.
• Pro: $12 / month for one user and unlimited projects
• Team: $42 / month for three users and unlimited projects
• Enterprise: for unlimited users, projects, and testing

UIzard: Best for AI-supported prototyping

UIzard adds AI to the UI design process. The features aren't perfect (yet), but they're definitely heading in the right direction. For example, you can:

• Generate mobile app screens or ideas for designs for your app from text prompts
• Import images or screenshots — even of hand-drawn sketches — to transform them into wireframe designs (users have mixed reviews on how well this feature works).
• Generate design themes and ideas
• Have AI help you modify or customize components

The pros: You can speed up a lot of prototyping steps, like generating frames, idea brainstorming, and making components. The cons: UIzard's canvas editor is a bit lacking compared to other prototyping tools.

So where does it land overall? UI designers say it's not as sophisticated as tools like Figma, and the functionality options don't come near what tools like Bubble, or even Glide or Justinmind offer. It's best for the first step: generating ideas, getting quick wireframes or mockups, and experimenting with different styles and components quickly.

Pricing:

Free: Up to two projects and three AI generations per month

Pro: $12 per user per month for 500 AI generations and up to 100 projects

Business: $39 per user per month for 5,000 AI generations and unlimited projects, plus advanced features

Enterprise: custom pricing for unlimited creating and increased security

Proto.io: Best for drag-and-drop prototyping using pre-built components

Proto.io is a good option similar to Mockplus. Both have simple, drag-and-drop editors that let you build your prototype quickly without a lot of design knowledge or background using templates and pre-built components.

However, in our experience, Proto.io is even simpler than Mockplus. It's a good option for quick, simple prototypes — a step above wireframing, but nothing like the high-fidelity options offered by Bubble and Figma. There isn't a ton of customization, but you'll find a solid library of pre-built components, interactions, and animations to make your prototype look more real.

Pricing:

Proto.io offers four plans (pricing varies between monthly and annual billing):

• Freelancer: approximately $24-29 per month for one user and up to five active projects
• Startup: approximately $40-49 per month for two users and up to 10 projects
• Agency: approximately $80-99 per month for five users and up to 15 projects
• Corporate: approximately $160-199 per month for 10 users and up to 30 projects

Ready to build a prototype for your mobile app?

With Bubble, you don't build throwaway prototypes — you build a V1 working app from the start. AI generates production-ready mobile apps in minutes, complete with working functionality you can test on actual devices with BubbleGo. Validate your prototype with real users experiencing real functionality, then iterate with the AI Agent or visual editor. No wasted effort on prototypes you'll throw away.

The best part: Bubble is free for as long as you need to work on your prototype — you only pay when you're ready to launch your app to real users and app stores.

Frequently asked questions about mobile app prototyping tools

How do you prototype a mobile app?

Define your app's purpose and user flows, then use Bubble AI to generate a working app with workflows, database, and logic. Gather user feedback by testing actual functionality, then iterate with the AI Agent or visual editor.

What's the difference between prototyping and wireframing?

Wireframing is an early-stage design step focused on structure and layout, showing where elements like buttons and images will go. Prototyping creates a more detailed, interactive model to simulate user experience and test functionality.

Can I use the same tool for web and mobile app prototyping?

While some tools work for both, it's best to use a platform built for web and native mobile from the ground up. Bubble offers a unified editor where you build production-ready web apps and native iOS/Android apps from the same platform. Share backend, data, and workflows across all platforms — no separate builds required. Mobile apps support native gestures (swiping, tapping), device features like camera and push notifications, and are built on React Native for true native performance. You're not creating separate prototypes — you're building real apps for every platform simultaneously.

How long should mobile app prototyping take?

With Bubble's AI app generation, you can create a production-ready mobile app in minutes — not hours or weeks. AI generates complete apps with UI, workflows, database, and logic instantly. Then use the AI Agent to add features and iterate, or switch to the visual editor for precise control. You're not building throwaway prototypes that take weeks — you're building real apps ready to test on devices and ship to app stores.

Do I need design experience to use prototyping tools?

Not at all. Bubble's AI generates production-ready apps — not just prototypes — without any design or coding experience. Chat with the AI Agent to add features and iterate, then use the visual editor to fine-tune details when you want control. You're building real apps that ship to users, not mockups or simulations.