21st.dev
Create, remix and share UI components with AI
Rooms
Your corner of the internet
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.
Pros & Cons
Only in 21st.dev — Pros
UI component marketplace 3D components Actionable insights Centralized UI components Easy integration Free componentsBoth 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 styleOnly in 21st.dev — Cons
—Both tools — Cons
—Only in Rooms — Cons
Monetization challengeDetails
| 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.
What Users Say
21st.dev
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...
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...
This feels like a great way to cut down on repetitive design work. I wonder how it handles versioning when components get updated.
Rooms
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...
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...
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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