
Google's AI tool for generating mobile and web UI designs from prompts
Flowstep records 89,017 monthly visits with -24.3% month-over-month growth and Free, Paid, Contact for Pricing pricing. ProtoPie records 72,414 monthly visits with -23.6% growth and Freemium, Paid, Contact for Pricing pricing.

AI-driven high-fidelity prototyping for real interactions
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | flowstep.ai | protopie.io |
| Pricing Model | Free, Paid, Contact for Pricing | Freemium, Paid, Contact for Pricing |
| Monthly Visits | 89.02K (89,017) | 72.41K (72,414) |
| MoM Traffic Delta | -28.53K (-24.3%) | -22.35K (-23.6%) |
| Primary Market & Share | 🇺🇸 United States (17.2%) | 🇮🇳 India (12.3%) |
| Direct Visits / mo | 42.94K | 34.81K |
| User Rating | 4.2 | 4.4 |
| Supported Platforms | Website | Website |

The design canvas built for AI coding agents
Generate complete, multi-screen interfaces from a text prompt, PRD, screenshot or pasted product URL rather than a single static screen.
Every design maps directly to code, so you can preview interactive prototypes quickly or export and ship the implementation.
Iterate by asking the AI for changes, or click any element and edit it by hand — the two modes work on the same file.
Connect Cursor, Claude Code, Windsurf or Codex so agents can generate screens and edit designs inside your editor.

AI-driven high-fidelity prototyping for real interactions
Describe the behavior you want and let AI generate the interaction logic, then perfect it credit-free rather than clicking through every step manually.
Build conditional flows, validate inputs and drive intricate motion with variables, formulas and response logic that mirrors real product behavior.
Link phones, tablets, TVs, smartwatches and production hardware through ProtoPie Connect, native device sensors, Arduino and custom integrations.
Include voice commands and native sensor input so prototypes respond the way an installed product would in a real environment.

Google's AI tool for generating mobile and web UI designs from prompts
A searchable library of 145,000+ real web and iOS screens for UI/UX inspiration.
A searchable library of 145,000+ real web and iOS screens for UI/UX inspiration.

From idea or sketch to editable wireframes, hi-fi UI and code in minutes
From idea or sketch to editable wireframes, hi-fi UI and code in minutes
SpecialistTurn flat screenshots, PDFs and slides back into editable designs and code
SpecialistTurn flat screenshots, PDFs and slides back into editable designs and code

AI-powered UI design and prototyping for product teams
AI-powered UI design and prototyping for product teams

Turn a prompt into editable UI screens in seconds
Turn a prompt into editable UI screens in seconds
AI-native design workspace that turns prompts into production-ready UI
AI-native design workspace that turns prompts into production-ready UI
An online whiteboard that mixes wireframing, diagramming, and AI agents
An online whiteboard that mixes wireframing, diagramming, and AI agents

AI wireframes and UI designs from screenshots, sketches or prompts
AI wireframes and UI designs from screenshots, sketches or prompts

SpecialistAI mobile app designer that turns a prompt into every screen
SpecialistAI mobile app designer that turns a prompt into every screen

Turn prompts, sketches, and URLs into Figma-ready UI designs and code
Turn prompts, sketches, and URLs into Figma-ready UI designs and code

Agentic design canvas that ships real code
Agentic design canvas that ships real code