ILW LightMapper vs One Big Projector
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ILW LightMapper
Transform sculptures with animated light using this projection mapping tool. Import your videos or use the built-in library to calibrate and apply visuals. Features include multiple grids, corner offsets, and warp painting for precise alignment and dynamic effects.
- Video Import (.mp4 / H.264)
- Downloadable Artwork Library
- Multiple Grids
- Corner Offsets & Global Offset Control
- Global Warp Painting Tool
- Per Grid Masking
- Timeline Scrubbing
Read full descriptionHide full description
LightMapper is a beginner-friendly projection mapping tool for iPhone, iPad and Mac, designed for artists, creators, and anyone exploring light-based art. Choose from a library of artwork, built-in animated shaders and free online videos, or import your own videos. Calibrate your projection with intuitive controls, then cast it wirelessly to transform any surface with animated light. You can save your setups so everything is ready exactly how you left it each time you return. LightMapper includes a growing library of downloadable visuals, with new artwork added over time. FEATURES CONTENT & LIBRARY • Browse and download projection visuals directly in the app • Built-in animated shaders with adjustable speed and scale • Search and download free online videos • My Imports: your own videos, organized in one library CASTING • Cast your projection wirelessly over AirPlay • Keep casting while the app is minimized in picture-in-picture SETUP & CALIBRATION • Add multiple grids for complex projection setups • Four-point corner adjustment for precise alignment • Touch and drag each grid to position • Two finger scale and rotation touch controls CREATIVE TOOLS • Warp Painting – apply localized distortion to match surfaces (global) • Masking – additive and subtractive masks. Use built-in shapes or build your own library of custom shapes from images (per-grid) • Color Controls – adjust hue, saturation, and brightness (per-grid or global) • Speed Controls – slow down or speed up visuals (per-grid or global) • Transparent Backgrounds – set black to be transparent for layering (per-grid or global) WORKFLOW & CONTROL • Timeline scrubbing for video playback (per-grid or global) • Undo support while editing • Grid overlay for alignment PROJECT MANAGEMENT • Save, rename, duplicate and delete your setups, and switch between them easily • Export a project as a file and import it on another iPhone, iPad or Mac • Projects keep their proportions across different screen shapes PERFORMANCE & SETTINGS • Edge smoothing toggle for softer or sharper visuals • Screen resolution and cast quality controls for performance vs sharpness INTERFACE • Clean, sci-fi inspired UI designed for creative workflows
One Big Projector
Transform any projector into a dynamic light show. Easily map video, photos, and effects onto walls, objects, or stages without complex software. Preview your creations in AR before going live.
- Map content to any surface
- Mesh warping for curved objects
- Use own photos, videos, or live camera
- Built-in library of effects
- Audio-reactive effects
- Layer multiple surfaces and content
- AR preview
Read full descriptionHide full description
Turn any projector into a mapped light show. One Big Projector fits your video, photos, and effects to any wall, object, or stage — no complicated software, no laptop, no steep learning curve. Design it on your iPhone, iPad, or Mac, preview it on your wall in AR, then connect a projector over USB-C or HDMI and your canvas goes full-screen and clean. WHY PEOPLE LOVE IT • Fit to anything — drag the corners to line your content up with a real wall, window, or prop • Bend around curves — mesh warping wraps content over columns, arches, and rounded surfaces • Bring your own content — photos, video, and live camera, or pick from a built-in library of effects and loops • Effects and looks — kaleidoscope, strobe, sparkle, waves, and more, some audio-reactive to your music • Layer it up — stack multiple surfaces and content layers for a full mapped scene • Preview in AR — see the result on your actual wall before a projector is even connected • Clean output — when you go live, the editor handles disappear for a pure, gig-ready projection PERFECT FOR • Holiday displays — Halloween and Christmas window and facade projection • Parties and events — instant ambiance on any wall • VJs, DJs, and stage shows — live visuals that map to the set • Art installations and window displays • Anyone who just wants to point a projector at something and make it look amazing NO PROJECTOR YET? NO PROBLEM Design your whole scene and preview it in AR on your wall today. When you are ready, any USB-C or HDMI projector works. FREE TO START Build real projects for free. Upgrade to Pro for unlimited projects and unlimited video layers — monthly, annually, or a one-time lifetime purchase. Terms of Use (EULA): https://hellogoodday.com/projectorstudio/terms Privacy Policy: https://hellogoodday.com/projectorstudio/privacy Made by Hello Good Day.
Screenshots
Verdict
The clearest difference is rating: One Big Projector at 5.0 against ILW LightMapper's 4.3. One Big Projector also leads on update cadence (every 3 days vs every 2 weeks). ILW LightMapper's advantage is ratings volume (7 vs 1) and iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ILW LightMapper sells 2 one-off in-app purchases and One Big Projector sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
One Big Projector holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: ILW LightMapper has 7 ratings behind it against 1, so its average is the more settled of the two.
ILW LightMapper ships an update every 2 weeks, One Big Projector every 3 days. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.
| Parameter | ILW LightMapper | One Big Projector |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (7 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 7 — better | 1 |
| Update frequency | Every 2 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 368 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Stuart Griese | Hello Good Day LLC |
Customer experience
ILW LightMapper
One Big Projector
In-app purchases
ILW LightMapper
- Support Development$2.99
- Support Development$9.99
One Big Projector
- Pro Monthly$2.991 Month
- Pro Annual$10.991 Year
- Pro Lifetime$14.99
Questions
Is ILW LightMapper free?
Is One Big Projector free?
Which has better reviews, ILW LightMapper or One Big Projector?
Do ILW LightMapper or One Big Projector have ads?
Which is updated more often, ILW LightMapper or One Big Projector?
Other comparisons















