AI-powered drawing revision tracking
Helonic is an AI construction drawing analysis platform for preconstruction teams using Helonic for document comparison.
Compare drawing revisions side-by-side with AI-powered change detection. Helonic automatically identifies added, removed, and modified elements between document versions, no manual overlay, lightbox, or transparency tricks required.
Why does document comparison matter?
Manual overlay review misses silent changes between revisions, and those misses reach the field as the wrong version of a wall, note, or opening.
How does Helonic go from two versions to a difference report?
Upload two revisions and Helonic reports every sheet-level change so the team is not relying on clouds the designer remembered to draw.
Upload both versions
Drop the previous and current revision of your drawing set into Helonic. We support any PDF drawing format.
AI alignment
Our AI automatically aligns sheets between versions, matching them by number, title, and content even if the order changed.
Change detection
Every element on every sheet is compared, geometry, dimensions, notes, and annotations are all analyzed for differences.
Difference report
Receive a comprehensive report highlighting every change with clouded markups, categorized by type and severity.
What changes does Helonic detect between documents?
Helonic detects geometry moves, note edits, schedule row changes, and missing clouds that a side-by-side flip through PDFs often skips.
Clouded Change Detection
- Automatically marks modified areas with revision clouds
- Highlights cloud overlap with prior revisions
- Surfaces the actual delta inside each cloud
Element Tracking
- See exactly what was inserted between versions
- See exactly what was removed or relocated
- Track moved or rotated elements across sheets
Dimension & Geometry
- Catches modified dimensions that cascade into the field
- Flags scale changes between revisions
- Identifies layout shifts that weren't clouded
Notes & Metadata
- Identifies changed specifications, callouts, and general notes
- Verifies revision dates, numbers, and descriptions are consistent
- Confirms title block updates between versions
Why do revision differences get missed?
Construction drawings go through dozens of revisions before reaching the field. Each revision introduces changes that must be caught, understood, and communicated to every trade. When revision changes are missed, the result is rework, RFIs, and schedule delays.
Manual overlay comparison is tedious, error-prone, and often skipped on tight deadlines. Helonic automates the entire comparison process, upload two versions and get a complete change report in minutes, covering every sheet, every element, and every dimension.
No lightbox tables, no transparent overlays, no guesswork. Just a clear, prioritized list of what changed.
Keep exploring
Related guides and features for teams managing version changes.