FluidUI vs ProtoPie: Which is Better in 2026?
Choosing between FluidUI and ProtoPie comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
FluidUI
Create interactive web and mobile prototypes quickly and easily with built-in libraries and collaboration.
Best for you if:
- • You need prototyping features specifically
- • Rapidly create interactive web and mobile prototypes.
- • Utilize over 2000 built-in components and upload custom assets.
ProtoPie
Interactive prototypes without code
Best for you if:
- • You need UI/UX design features specifically
- • ProtoPie is an advanced prototyping tool for realistic interactions
- • It creates high-fidelity prototypes with sensors, variables, and conditions
| At a Glance |  FluidUI |  ProtoPie |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Prototyping | UI/UX Design |
Rating | 4.5/5 | 4.5/5 |
Choose FluidUI or ProtoPie?
Choose FluidUI if
Create interactive web and mobile prototypes quickly and easily with built-in libraries and collaboration.
- Fast and easy to create prototypes
- Extensive library of pre-built components
- Supports custom asset uploads
- Your work is prototyping-shaped, not UI/UX design-shaped
Choose ProtoPie if
Interactive prototypes without code
- Highly realistic prototypes
- Sensor support
- Team collaboration
- Your work is UI/UX design-shaped, not prototyping-shaped
| Feature | FluidUI | ProtoPie |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★4.5/5 97 reviews | ★4.5/5 70 reviews |
| Categories | PrototypingUI/UX Design | UI/UX DesignPrototyping |
In-Depth Analysis
FluidUI
Create interactive web and mobile prototypes quickly and easily with built-in libraries and collaboration.
Strengths
- +Fast and easy to create prototypes
- +Extensive library of pre-built components
- +Supports custom asset uploads
- +Interactive prototypes with gestures and animations
- +Clear visualization of page relationships (screenflow)
Weaknesses
- -Specific collaboration features like real-time editing are tied to higher-tier plans
- -Export and print features are not available on the free or Solo plan
Key features
ProtoPie
Interactive prototypes without code
Strengths
- +Highly realistic prototypes
- +Sensor support
- +Team collaboration
Weaknesses
- -Steep learning curve
- -Expensive for teams
Key features
Pricing: FluidUI vs ProtoPie
| Plan | FluidUI | ProtoPie |
|---|---|---|
| Tier 1 | Free forever Free | Free Free |
| Tier 2 | $8.25/month Solo | $13 Individual |
| Tier 3 | $19.08/month Pro | $50 Team |
| Tier 4 | $41.58/month Team | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on FluidUI pricing and ProtoPie pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: FluidUI
Want the highest-rated option?
FluidUI: 4.5/5 (97 reviews). ProtoPie: 4.5/5 (70 reviews).
Go with: FluidUI
Value user reviews?
FluidUI: 97 reviews (4.5/5). ProtoPie: 70 reviews (4.5/5).
Go with: FluidUI
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
FluidUI is a prototyping tool. ProtoPie is in UI/UX design. Pick the category that matches your needs.
How important are ratings?
Both are rated 4.5/5.
Key Takeaways
ProtoPie
- Free tier available
- Our pick for this comparison
FluidUI
- Larger review base (97 reviews)
- Better fit for prototyping
The Bottom Line
ProtoPie is our pick.
Frequently Asked Questions
Is FluidUI or ProtoPie better?
ProtoPie is rated in our evaluation. Both are freemium.
What are FluidUI and ProtoPie used for?
FluidUI: Create interactive web and mobile prototypes quickly and easily with built-in libraries and collaboration.. ProtoPie: Interactive prototypes without code.
What does FluidUI cost vs ProtoPie?
FluidUI is freemium (free tier + paid plans). ProtoPie is freemium (free tier + paid plans). Visit their websites for detailed pricing.