21st.dev

Create, remix and share UI components with AI

★★★★★ 5.0/5
FactScore™ 42.3
VS

Rooms

Your corner of the internet

★★★★★ 5.0/5
FactScore™ 47.7

Updated June 2026

21st.dev Rooms
Rating 5.0★ 5.0★
Reviews 6 8
Pros 6 16
FactScore™ 42.3 47.7

FactScore™ Comparison

FactScore™ weighs both quality (rating) and popularity (reviews) for a fairer ranking than stars alone.

42.3
21st.dev FactScore™
👑
47.7
Rooms FactScore™
★ Rooms wins on FactScore™

Pros & Cons

Only in 21st.dev — Pros

UI component marketplace 3D components Actionable insights Centralized UI components Easy integration Free components

Both tools — Pros

Only in Rooms — Pros

Game creation Creative platform Fun gameplay Interactive experiences User-generated content Cozy design Customizable Educational Exploration High production quality Lua scripting Sandbox environment Fast performance Free tier Onboarding experience Voxel style

Only in 21st.dev — Cons

Both tools — Cons

Only in Rooms — Cons

Monetization challenge

Details

21st.dev Rooms
Categories Website builders, No-code Platforms Mobile editing apps, 3D & Animation, Website builders, No-code Platforms, Graphic design tools, Games
Platforms Web Web · iOS
Added January 7, 2025 May 16, 2023
Website 21st.dev rooms.xyz

Who Should Pick Which?

Choose 21st.dev if...

  • UI component marketplace
  • 3D components
  • Actionable insights

Choose Rooms if...

  • Game creation
  • Creative platform
  • Fun gameplay

With a FactScore™ of 42.3 vs 47.7, Rooms leads in community reception. 21st.dev uniquely offers UI component marketplace and 3D components, while Rooms stands out for Game creation and Creative platform.

3

What Users Say

21st.dev

A
Artyom Jan 16, 2025
★★★★★

Looks like a practical tool for speeding up UI development, especially when working with AI-driven apps. It’s helpful to have ready-to-use components instead of building everything from scratch. Ar...

S
Stepan Jan 15, 2025
★★★★★

This definitely simplifies the workflow for frontend developers. Having a centralized space for high-quality UI components saves a lot of time compared to searching for scattered solutions. Curious...

P
Pavel Jan 16, 2025
★★★★★

This feels like a great way to cut down on repetitive design work. I wonder how it handles versioning when components get updated.

Rooms

N
Nicholas May 16, 2023
★★★★★

I've been friends with @jasontoff for many years now, and he's one of the most creative and kind people I know. I've had the chance to play with Rooms during the development, and it's been so fun s...

N
Naomi May 16, 2023
★★★★★

It honestly exceeded my expectations. It reminds me of Minecraft but for adults. As someone who has never played Minecraft for recreation, I surprisingly found rooms.xyz to be super cool. Really cu...

W
Wassim May 16, 2023
★★★★★

Wow, I love this product from the idea to the execution! It's very refreshing and well-made. Had a great moment going through the onboarding then experimenting with existing rooms and the room crea...

Frequently Asked Questions

Which is better, 21st.dev or Rooms?

Based on FactScore™, Rooms leads with a score of 47.7 vs 42.3. Rooms has a higher rating of 5.0★ compared to 5.0★.

What are the pros of 21st.dev compared to Rooms?

21st.dev uniquely offers: UI component marketplace, 3D components, Actionable insights, Centralized UI components, Easy integration.

What are the pros of Rooms compared to 21st.dev?

Rooms uniquely offers: Game creation, Creative platform, Fun gameplay, Interactive experiences, User-generated content.

Is 21st.dev better rated than Rooms?

21st.dev is rated 5.0★ from 6 reviews. Rooms is rated 5.0★ from 8 reviews.

What is the FactScore™ of 21st.dev and Rooms?

FactScore™ weighs rating and review volume together. 21st.dev scores 42.3 and Rooms scores 47.7.

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