ChartQuery vs SkyShare

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

ChartQuery compared with SkyShare
Detail	ChartQuery	SkyShare
What it does	Generate beautiful charts with a simple API	Identify Moon, planets and stars in night sky photos
Stage	Startup	Not given
Founded	2024	Not given
Based in	FR	US
Pricing model	Not given	Free
Pricing	Free plan: $0 with 60 requests per hour; Starter: $49/month for 750,000 credits/month; Pro: $149/month for 3,000,000 credits/month; Enterprise: Custom pricing for 15,000,000+ credits/month. Chart render costs 5 credits per call, diagram render 5 credits, AI chart generation 10 credits, AI diagram ge	Not given
Key features	28 diagram languages including Mermaid, PlantUML, GraphViz and D2 Multiple output formats (PNG, SVG, JPEG, PDF) AI chart and diagram generation from text descriptions Sub-500ms response times on average 99.95% uptime SLA GDPR compliant EU-hosted data processing Barcode and QR code generation	Photo analysis with time and location detection from metadata Returns celestial object names with pixel-level positions Automatic labeled image generation with custom shapes Label layer available in story, portrait or square formats Sky data API endpoint for Sun, Moon, planets and thirty named stars Confidence grading for identification accuracy Manual correction through tap confirmation on ambiguous objects Browser-based processing using Astronomy Engine
What makes it different	No server maintenance required - no headless browser, canvas or Puppeteer needed AI-powered chart generation without JSON configuration Fast generation supporting thousands of visuals per minute without infrastructure provisioning	Runs directly in the browser with no server processing required Tested on real photos with documented accuracy metrics Powers the Sky Map with same underlying code Uses open-source Astronomy Engine for accurate celestial calculations
Community votes	0	0
DR (Domain Rating by Ahrefs)	34 no change since last check	7 no change since last check
Trust Flow (Majestic)	15	4
Citation Flow (Majestic)	24	32
Referring domains (Majestic)	18	81

4 details filled in for both companies.

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