Chartai vs Mermaid Viewer vs Whimsical

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Chartai
vs
Competitor 1
Mermaid Viewer
Competitor 2
Whimsical
Competitor 3
Suggested competitors for Chartai: Napkin90% DG Diagram-Generator86% FFigureGPT83% ConceptViz79% WBWhiteboard by Athena AI78% AI Diagram Maker77% Tenorshare AI Diagrimo77% Lucidchart AI77%
Compare
3 tools · best value per row highlighted
Your tool Chartai
chartai.io
You land on Chartai and see a grid of quick start templates spanning eleven different visualization types
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Competitor Mermaid Viewer
mermaidviewer.com
Mermaid Viewer runs entirely in your browser
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Competitor Whimsical
whimsical.com
Whimsical is a whiteboard for product builders that combines diagrams, flowcharts, mind maps, wireframes and documents on an infinite canvas.
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Traffic estimated monthly website traffic
Monthly visits
31.5Kvisits/mo
143.2Kvisits/mo
—
MoM change
▲ 14.1%
▼ 10.9%
—
6-month growth
+11.0%
-9.3%
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Global rank web
#1,121,782
#317,277
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Avg. last 3 months
31.2K
163.4K
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Bounce rate lower is better
40%
45%
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Pages / visit
1.7
1.8
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Visit duration
22s
19s
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Traffic sources
● Direct 87% · ● Referral 13%
● Direct 81% · ● Referral 19%
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ChartaiMermaid ViewerWhimsical
046.6K93.1K139.7K186.3KChartai · 25.4KChartai · 29.6KChartai · 26KChartai · 28.4KChartai · 27.5KChartai · 29.5KChartai · 34.5KChartai · 27.6KChartai · 31.5KMermaid Viewer · 158.9KMermaid Viewer · 157.9KMermaid Viewer · 184.8KMermaid Viewer · 170.5KMermaid Viewer · 186.3KMermaid Viewer · 160.7KMermaid Viewer · 143.2K10K100K1MChartai · 25.4KChartai · 29.6KChartai · 26KChartai · 28.4KChartai · 27.5KChartai · 29.5KChartai · 34.5KChartai · 27.6KChartai · 31.5KMermaid Viewer · 158.9KMermaid Viewer · 157.9KMermaid Viewer · 184.8KMermaid Viewer · 170.5KMermaid Viewer · 186.3KMermaid Viewer · 160.7KMermaid Viewer · 143.2KDec '25Jan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Starting price
$5per month · free tier available
$69.99per month · free tier available
$10per month · free tier available
Free tier
Free trial
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API access
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Plans
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Free FreeStarter $69.99/yrPro $119.99/yr
Free FreePro $10/moBusiness $20/mo
Capabilities input → output
Input
CodeDataText
CodeText
ImagesText
Output
DataImages
CodeImages
Images
Skill level
Beginner-friendly
Intermediate
Beginner-friendly
Categories
Productivity & OfficeAI ChartingAI Diagram Generator
Productivity & OfficeAI Diagram Generator
Design & CreativeProductivity & OfficeAI Diagram GeneratorAI Mind Mapping+1 more
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
8
6
9
Diagrams
Flowcharts
Mind maps
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Diagram assistance
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UML diagrams
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Charts
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Code diagramming
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Data charts
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Gantt charts
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Infographics
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Mermaid images
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Team collaboration
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Wireframes
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Brainstorming
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Collaborative design
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UX design
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
Saves
0
0
0
Reviews
0
0
0
Prompts
0
0
0
Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.