kitio.aiFlowUs vs Stacks
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. FlowUs starts at See pricing page and Stacks starts at $9/mo. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Cloud docs and notes
- Multi-dimensional tables
- Knowledge base
- FlowUs AI assistant
- File storage
- Private deployment
- Bookmarks, notes and files in one place
- Collections and tags
- Public or private sharing
- Real-time collaboration
- Personal AI assistant
| Feature | FlowUs | Stacks |
|---|---|---|
| Best for | Chinese notes, docs and knowledge base workspace with a built-in AI | Personal AI workspace for links, notes and files |
| Category | Productivity | Productivity |
| Pricing model | Freemium | Paid |
| Starting price | See pricing page | $9/mo |
| Free plan | Yes | No |
| Made by | FlowUs | Better Stacks |
| Based in | China | India |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
FlowUs starts at See pricing page and Stacks starts at $9/mo. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Be Productive
$9/mo
- One user
- Unlimited collections and tags
- 50GB storage
Be Collaborative
$29/mo
- Unlimited users and shared workspaces
- Roles and permissions
- 500GB storage
Be Creative
$39/mo
- Unlimited public collections
- Everything in Be Collaborative
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
FlowUs
- Docs, tables and files in one place
- Private deployment for companies
- Large template library
- Interface is in Chinese only
- Pricing not shown in the evidence
- AI is one feature among many
Stacks
- Replaces several saving tools
- Control over what is public
- Unlimited collections and tags
- No free plan mentioned
- Team features cost more
- Storage caps by plan
Which one should you choose?
Choose FlowUs if you want:
- Docs, tables and files in one place
- Private deployment for companies
- Large template library
Watch out: interface is in chinese only.
Choose Stacks if you want:
- Replaces several saving tools
- Control over what is public
- Unlimited collections and tags
Watch out: no free plan mentioned.
FlowUs vs Stacks FAQ
What is the difference between FlowUs and Stacks?
FlowUs: Chinese notes, docs and knowledge base workspace with a built-in AI. Stacks: Personal AI workspace for links, notes and files. Both are productivity tools.
Is FlowUs or Stacks cheaper?
FlowUs starts at See pricing page and Stacks starts at $9/mo. Check both pricing pages for current plans.
Do FlowUs and Stacks have free plans?
FlowUs: Yes. Stacks: No.
Who makes FlowUs?
FlowUs is made by FlowUs, based in China.
Who makes Stacks?
Stacks is made by Better Stacks, based in India.
Which should I choose, FlowUs or Stacks?
Choose FlowUs if you value docs, tables and files in one place and private deployment for companies. Choose Stacks if you value replaces several saving tools and control over what is public.