Querycairn: Explain Plans
Robert Corbin · Developer Tools
Independent analytics for this App Store listing. AppTracker is not affiliated with Robert Corbin.
Chart standing · US
What changed · US
Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.
Removes about 35 MB of artwork the app never displayed. Plan parsing and the cost breakdown work as before.
Price & rating history · US
Reconstructed from the listing changes AppTracker has observed in this storefront. A field is charted once it has changed more than once, and each line starts at the value it moved from.
Price · 2.99 USD now · 3 changes on record
In-app purchases · US
No in-app purchases.
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About
Querycairn is a private query-plan interpretation bench for developers, database administrators, consultants, and technical teams who need a focused second screen without pasting schema or plans into a website. Surface the nodes where row-estimate error and loop amplification make a seemingly small plan expensive. KEY FEATURES - PostgreSQL EXPLAIN JSON import - Recursive plan-node inventory - Estimated-versus-actual row view - Loop and predicate risk scoring - Node owner and hypothesis notes - Statistics and index checklist - Plan findings export - Database credentials never requested - Native structured-file or CSV import - Local PDF, workspace JSON, and domain-artifact export - No account, ads, analytics, tracking, IAP, or subscription Querycairn interprets recorded PostgreSQL plan fields and entered context; it does not connect to a database, execute SQL, recommend an index automatically, or prove a change is safe. EXPLAIN ANALYZE executes the statement. Use controlled data, representative parameters, and expert review.
What's new · 1.1
Removes about 35 MB of artwork the app never displayed. Plan parsing and the cost breakdown work as before.
Details