kitio.aiUbblu vs Fluid Topics
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Ubblu is completely free, while Fluid Topics is paid.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- AI-enhanced search
- Notes and cards
- Tags and folders
- Reminders and pinned notes
- AI search
- Generative answers
- Documentation portal designer
- In-product help
- Helpdesk integration
- Content analytics
| Feature | Ubblu | Fluid Topics |
|---|---|---|
| Best for | AI-searchable notes and cards that find your ideas fast | Product knowledge platform with AI search and generative answers |
| Category | Productivity | Productivity |
| Pricing model | Free | Paid |
| Starting price | Free | See pricing page |
| Free plan | Yes, fully free | No |
| Made by | Ubblu | Fluid Topics |
| Based in | – | France |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Ubblu is completely free, while Fluid Topics is paid.
Free plan
Cheapest paid plan
Top plan
Free trial
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Ubblu
- Free with no card needed
- Ask for ideas instead of browsing
- Unlimited notes and cards
- Desktop only for now
- Paid plans are still being planned
- Smaller feature set than big note apps
Fluid Topics
- One source for all product content
- Answers grounded in your documentation
- Analytics on content use
- No public pricing
- Best for large documentation sets
- Setup needs content structuring
Which one should you choose?
Choose Ubblu if you want:
- Free with no card needed
- Ask for ideas instead of browsing
- Unlimited notes and cards
Watch out: desktop only for now.
Choose Fluid Topics if you want:
- One source for all product content
- Answers grounded in your documentation
- Analytics on content use
Watch out: no public pricing.
Ubblu vs Fluid Topics FAQ
What is the difference between Ubblu and Fluid Topics?
Ubblu: AI-searchable notes and cards that find your ideas fast. Fluid Topics: Product knowledge platform with AI search and generative answers. Both are productivity tools.
Is Ubblu or Fluid Topics cheaper?
Ubblu is completely free, while Fluid Topics is paid.
Do Ubblu and Fluid Topics have free plans?
Ubblu: Yes, fully free. Fluid Topics: No.
Who makes Ubblu?
Ubblu is made by Ubblu.
Who makes Fluid Topics?
Fluid Topics is made by Fluid Topics, based in France.
Which should I choose, Ubblu or Fluid Topics?
Choose Ubblu if you value free with no card needed and ask for ideas instead of browsing. Choose Fluid Topics if you value one source for all product content and answers grounded in your documentation.