ERBuilder vs Napkin vs CodeViz vs Whiteboard by Athena AI

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

Your tool
ERBuilder
vs
Competitor 1
Napkin
Competitor 2
CodeViz
Competitor 3
WBWhiteboard by Athena AI
Compare
4 tools · best value per row highlighted
Your tool ERBuilder
soft-builder.com
ERBuilder is a data modeling application from Softbuilder, and its generative AI feature turns plain-language descriptions into entity-relationship diagrams.
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Competitor Napkin
napkin.ai
Napkin works directly from your text: paste or import it, click generate, and it proposes visuals that match the ideas in the writing.
Make main Remove
Competitor CodeViz
codeviz.ai
The free tier caps you at five diagrams monthly and one repository
Make main Remove
Competitor WBWhiteboard by Athena AI
athenaboard.ai
Instant Visual Creation Describe your concept, and watch as AI instantly generates flowcharts, wireframes, mind maps, or UI prototypes—ready in seconds. Perfect for entrepreneurs, digital teams, and
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
5.4Kvisits/mo
1.3Mvisits/mo
3.4Kvisits/mo
1.1Kvisits/mo
MoM change
▼ 6.3%
▼ 8.5%
▼ 44.8%
▲ 1,238.1%
6-month growth
-22.4%
-46.4%
+35.5%
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Global rank web
#3,419,998
#36,124
#4,939,424
#12,935,820
Avg. last 3 months
5.9K
1.4M
4.1K
402
Bounce rate lower is better
39%
41%
35%
38%
Pages / visit
1.9
3.9
1.8
1.1
Visit duration
15s
2m 36s
16s
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Traffic sources
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● Direct 86% · ● Referral 9%
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ERBuilderNapkinCodeVizWhiteboard by Athena AI
0831.2K1.7M2.5M3.3MERBuilder · 10.9KERBuilder · 12.8KERBuilder · 16KERBuilder · 7KERBuilder · 8.8KERBuilder · 8.8KERBuilder · 6.4KERBuilder · 5.8KERBuilder · 5.4KNapkin · 3.3MNapkin · 2.7MNapkin · 2.4MNapkin · 2.3MNapkin · 2.4MNapkin · 2.1MNapkin · 1.8MNapkin · 1.6MNapkin · 1.4MNapkin · 1.3MCodeViz · 4.2KCodeViz · 6.4KCodeViz · 2.7KCodeViz · 2.5KCodeViz · 6.3KCodeViz · 3.3KCodeViz · 2.5KCodeViz · 6.2KCodeViz · 3.4KWhiteboard by Athena AI · 98Whiteboard by Athena AI · 174Whiteboard by Athena AI · 78Whiteboard by Athena AI · 84Whiteboard by Athena AI · 1.1K101001K10K100K1M10MERBuilder · 10.9KERBuilder · 12.8KERBuilder · 16KERBuilder · 7KERBuilder · 8.8KERBuilder · 8.8KERBuilder · 6.4KERBuilder · 5.8KERBuilder · 5.4KNapkin · 3.3MNapkin · 2.7MNapkin · 2.4MNapkin · 2.3MNapkin · 2.4MNapkin · 2.1MNapkin · 1.8MNapkin · 1.6MNapkin · 1.4MNapkin · 1.3MCodeViz · 4.2KCodeViz · 6.4KCodeViz · 2.7KCodeViz · 2.5KCodeViz · 6.3KCodeViz · 3.3KCodeViz · 2.5KCodeViz · 6.2KCodeViz · 3.4KWhiteboard by Athena AI · 98Whiteboard by Athena AI · 174Whiteboard by Athena AI · 78Whiteboard by Athena AI · 84Whiteboard by Athena AI · 1.1KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Free Trial
Freemium
Freemium
Freemium
Starting price
$139per month
$9per month · free tier available
$19per month · free tier available
$5.99per month · free tier available
Free tier
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Free trial
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API access
–
–
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Plans
Professional (Subscription) $139/yrEnterprise (Subscription) $399/yrProfessional (Lifetime) $279Enterprise (Lifetime) $799
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Free FreePro $19/moTeams $50/moCustom $0
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Capabilities input → output
Input
Text
DataText
CodeText
Text
Output
Data
DataImagesSlides
Images
Images
Skill level
Intermediate
Beginner-friendly
Intermediate
Beginner-friendly
Categories
Productivity & OfficeAI Diagram Generator
Design & CreativeProductivity & OfficeAI ChartingAI Diagram Generator+3 more
Development & CodeProductivity & OfficeAI Developer ToolsAI Diagram Generator
Design & CreativeProductivity & OfficeAI Diagram GeneratorAI Mind Mapping+1 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
5
7
8
9
Diagrams
Diagram assistance
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Flowcharts
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Mind maps
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Architectural diagramming
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Code diagramming
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Code visualization
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Data modeling
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Infographics
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Charts
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Code documentation
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–
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Data charts
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Database design
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Wireframes
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Code reviews
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Collaborative design
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–
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Google meet assistance
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Onboarding tutorials
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Presentations
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Prototyping
–
–
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Schema generation
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–
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UX design
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–
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
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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.