Lunacand IES Layouts
IES to direct-light plane maps
$4.99 · Designed for iPad. Not verified for macOS.
Import IES files and calculate a direct-light plane. Arrange fixtures, inspect points and export a reproducible layout.
Plan a direct-light layout from your IES files, with calculations you can take away.
Lunacand combines source inspection, fixture placement and a reproducible handoff in one offline workspace. Import a supported manufacturer IES distribution, arrange downward-facing fixtures above a rectangular horizontal plane, then inspect calculated direct illuminance in lux.
YOUR DISTRIBUTIONS, IN CONTEXT
Keep original IES bytes with each plan. Inspect source identification, C0/180 and C90/270 polar traces, angular counts, peak candela and a source fingerprint. No bundled manufacturer library or account is required. An original analytic study is included to learn the controls.
PRECISE LAYOUT EDITING
Arrange up to 12 fixtures using up to 8 IES sources per plan. Edit X/Y position, height above the plane, counterclockwise rotation, output fraction and enabled state. Use sliders for exploration and numeric entry for exact values. The field updates with the layout. On iPad, a wide workspace keeps the inspector alongside the plane.
SEE THE NUMBERS
Inspect a 21 × 21 grid of cell-centre samples, selected-point lux, sampled mean, minimum, maximum and minimum-to-mean ratio. A numeric list exposes all 441 values, including points that a colour map alone could hide.
A COMPLETE LOCAL HANDOFF
Preview a PDF with the layout, fixtures and project notes. Share a ZIP containing the PDF, plane SVG, point and fixture CSVs, byte-exact IES originals, source checksums, assumptions and a restorable plan JSON. Save up to 20 plans within a 96 MiB local library, rename or duplicate them, and restore exported JSON backups through Files.
ONE PURCHASE
No subscriptions, advertisements, sign-in, analytics or app network requests. Files and plans remain on your device unless you deliberately export or share them. Deleting the app removes its local library; keep exported backups.
SUPPORTED SCOPE
IESNA LM-63-1995/2002, Type C, TILT=NONE only. Vertical angles must start at 0 and end at 90 or 180 degrees. Horizontal coverage: a single 0-degree plane, or 0–90/180/360 degrees. Up to 2 MiB per IES and 361 × 721 angles. Rectangular plane dimensions 0.5–30 metres; mounting height above plane 0.5–20 metres.
CALCULATION LIMITS
Direct-only point-source model with bilinear angular interpolation. Fixtures point straight down; rotation is around the vertical axis. No reflected light, obstructions or shadows, daylight, tilted aiming, glare/UGR, measured lux or compliance assessment. Grid summaries are sampled values, not continuous extrema. Use professional tools and qualified review when a project requires those models or certification.
Ratings & Reviews
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The developer, Gobling Company, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Gobling Company
- Size
- 3.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Age Rating
4+
- 4+
- Copyright
- © 2026 Gobling Company
