Compare tools
Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
⇄ Comparison dimension — pick the market you're actually shopping in
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Onpage.ai
✓ verifiedPaid
SEO assistant for analysis and content optimization; AppSumo-tied, low signal.
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Gravity Write
✓ verifiedFreemium
AI writing platform for SEO blogs, social posts and copy, bundling many content tools in one place.
233K visits/mo
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SEO.ai
✓ verifiedFree trial
Autonomous AI SEO agent that researches, writes and publishes ranking articles plus builds backlinks on a site automatically.
191K visits/mo
Pricing
Pro License: Appsumo (SimilarContent) customers
No public pricing
Single Site: $149/mo (one website)
Multi Site: $299/mo (up to 3 websites/languages)
Free trial available
Core features
- ✦On-Page SEO Analysis
- ✦Webdraft Tool
- ✦PAA Content Tool
- ✦Topic Clustering & Modeling
- ✦AI blog and long-form article writer
- ✦SEO-focused content generation
- ✦Social media post creation
- ✦Marketing and sales copywriting tools
- ✦Website builder
- ✦Multi-language support
- ✦Automated keyword research and content generation
- ✦Direct auto-publishing to WordPress, Webflow, Wix, Shopify and more
- ✦Automatic backlink exchange with niche-relevant sites
- ✦Domain Rating tracking
- ✦Optional human review before publishing
- ✦Support for 50+ languages
Use cases
- →Analyze critical SEO metrics on any webpage.
- →Gather and organize content snippets from across the web.
- →Extract and rewrite Google’s 'People Also Ask' questions for content ideation.
- →Visualize SEO strategies with AI-generated topic clusters.
- →Writing SEO blog posts and articles
- →Generating social media content
- →Producing marketing and ad copy
- →Consolidating several AI writing tools into one
- →Business owners who want SEO without an in-house team
- →Agencies managing SEO for multiple clients
- →Site owners wanting hands-off content publishing and link building
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