ASO Engine vs Spacemail for Claude
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
ASO Engine compared with Spacemail for Claude
| Detail | 
ASO Engine | 
Spacemail for Claude |
|---|
| What it does | Research App Store keywords, translate metadata with your own OpenAI key, and review global pricing
| Free MCP connector for Claude to access Spacemail email
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| Stage | Not given
| Not given
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| Founded | Not given
| Not given
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| Based in | US
| GB
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| Pricing model | Free
| Open source
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| Pricing | $0 free to use for the current release. OpenAI API usage for AI translation is billed separately to your API account.
| Free
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| Key features | - Keyword research with estimated popularity and difficulty scores
- Competitor analysis showing public app listings and keyword rankings
- App rank tracker for monitoring position by country
- Metadata translation using your own OpenAI API key
- Price Parity for reviewing in-app purchase and subscription pricing across territories
- Protected Keychain credential storage
- Apple Silicon and Intel Mac support
- Native Mac app with no browser dashboard required
- Drafts and review workflow before publishing changes
- macOS 15 or later support
| - Check new mail across all mailboxes with message previews
- Search emails by sender, subject, words or date
- Read full email messages with attachment names
- Draft threaded replies and new emails saved to Drafts
- Mark messages as read or unread and flag important ones
- Archive, move or delete messages to Trash
- Works with Claude Desktop, Claude Code, Cursor and Windsurf
- Support for up to three mailboxes
- Drafts saved for manual review before sending
- Data stays on your computer, not collected by Norwich Website Design
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| What makes it different | - Native Mac app designed specifically for App Store research workflow, not a web dashboard
- You control your own credentials and API keys stored in the Mac's Data Protection Keychain
- Use your own OpenAI key for metadata translation with no separate AI service subscription
- Review and edit translations and pricing changes as drafts before publishing to App Store Connect
- No account or checkout required to download and use the current free release
| - Free and open-source under MIT licence
- Email content marked as untrusted to prevent phishing attacks
- Deleted messages go to Trash, not permanently deleted
- Independent project not affiliated with Spaceship or Spacemail
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 9 ▼ −3 (down) since last check | 44 ▼ −1 (down) since last check |
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| Trust Flow (Majestic) | 7 | 0 |
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| Citation Flow (Majestic) | 20 | 4 |
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| Referring domains (Majestic) | 6 | 3 |
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6 details filled in for both companies.
More alternatives to ASO Engine More alternatives to Spacemail for Claude