Ritn3D is a floor plan drawing app built for phones first. Tap to place a wall, drag your finger to reshape a room, drop in a door or window from the toolbar. No stylus required — the interaction is designed around thumbs. Realtors sketch a listing at the property in five minutes; homeowners map their apartment before buying furniture; contractors capture a rough as-built during the first walkthrough. Free, unlimited, works on iOS and Android natively as well as any modern mobile browser at app.ritn3d.com/app/dashboard. Everything syncs across devices via your Ritn3D account, so a sketch you started on your phone opens on your desktop when you get home.
Finger-native drawing, no stylus required
Install Ritn3D from the App Store or Google Play, or open app.ritn3d.com/app/dashboard in your phone's browser. Sign in with Google, Apple, or email — takes about 10 seconds.
Tap once to start a wall, drag to draw, tap to end. Chain multiple walls together to form a room — the editor snaps to right angles when you're close, and detects the enclosed area as a room automatically.
Drag corner handles to reshape rooms, use pinch-to-zoom to work on detail, and drop in doors and windows from the floating toolbar. Auto-save keeps your work safe if you get interrupted.
Export a PNG or PDF of the finished plan for a listing, brief or record. Optional: tap 'convert to 3D' to generate an interactive 3D model with our AI (three free conversions per month, or more on Pro).
Realtors, homeowners, and contractors use it daily
Every gesture in the editor is designed for touch. Tap to place, drag to shape, pinch to zoom, two-finger pan. No stylus assumption, no reliance on a mouse, no menu-heavy UI ported from desktop. On a phone, drawing a two-bedroom apartment takes about three minutes.
Not every room is rectangular. Drop an arc wall from the toolbar to draw bay windows, curved kitchen islands, or rounded corners. The arc snaps to reasonable radii but you can drag it into any shape you need.
A stocked library of doors (single, double, sliding, pocket) and windows (single, double, bay, round) drops directly onto any wall. Each opening rotates and resizes with two taps, and the plan re-detects the room boundaries after you place them.
Every change auto-saves to your account within seconds. Undo and redo work across the whole editing session — no risk of losing an hour's work because you accidentally deleted a wall or your phone rang.
When you close a loop of walls, the editor detects the enclosed area as a room and drops in a label (Bedroom 1, Kitchen, Bathroom). You can rename any room, change the type, or override the auto-detection if the shape confuses it.
Sketch on your phone at the property, open the same plan in the browser on your laptop when you get back to the office, keep editing. All three surfaces (iOS, Android, web) are backed by the same account — no export/import step.
Everything you need to know. Can’t find the answer you’re looking for? Feel free to reach out.
All three work. There are native iOS and Android apps in the App Store and Google Play respectively, and there's a browser-based editor at app.ritn3d.com/app/dashboard that works in Mobile Safari, Chrome for Android, and any other modern mobile browser. The native apps have slightly smoother touch handling and work offline more reliably; the web version has zero install friction — good for showing a client at a coffee shop. Free-tier drafts stay on the device you drew them on; cross-device sync requires Pro.
No. The editor is designed around finger input from the start — walls are placed by tap-and-drag, corners are dragged with a fingertip-sized handle, and pinch-to-zoom lets you get close to details without needing a stylus's precision. A stylus works if you have one (Apple Pencil, S Pen, or a passive capacitive stylus) and can help on very detailed plans, but it isn't required for the vast majority of drawings.
Yes — this is one of our most common use cases. Open the editor when you arrive, sketch the plan while you're walking through, drop in room labels as you go, and export a PNG before you leave. On a typical single-family listing, the whole plan takes five to ten minutes on a phone. Some realtors sketch during the pre-listing walkthrough and use the PNG in the MLS listing; others sketch during the buyer's tour to help the buyer visualise a room configuration. Both work well.
Yes. Homeowners planning a renovation and contractors capturing an as-built for a bid both use the drawing app for this. Walk through the space with a tape measure or a laser measure, tap in the walls to match, drop in doors and windows where they actually are, and export the PNG for your renovation brief or contractor bid. You don't need to be precise to the millimetre — the AI 3D conversion (optional) is forgiving of small errors, and even the PNG is a huge upgrade over a hand-sketched napkin.
Yes, and unlimited. Draw as many plans as you want, save as many as you want, export as many PNGs and PDFs as you want. No design cap, no export watermark, no forced trial. The optional AI 3D conversion feature has a monthly quota (3/month free, 20/month Pro at $9.99, 40/month Pro+ at $19.99), but the drawing tool itself is free forever on any plan.
PNG and PDF today - high-resolution, up to 4K, no watermark on any tier. This covers the overwhelming majority of use cases: listing images, contractor briefs, renovation records, insurance claims, printed plans. SVG (vector) and STL are on the roadmap (STL planned Q4 2026). If you want a 3D file - GLB for other 3D software, STL for 3D printing - those are Pro+ features ($19.99/month) since they involve running the AI 3D conversion pipeline.
The native iOS and Android apps work offline for drawing — cache the app on your device once, and you can sketch at a rural property with no signal. Changes sync back to the cloud when you reconnect. The web-based editor at app.ritn3d.com/app/dashboard needs an initial internet connection to load, and once loaded it handles brief connection drops gracefully, but for guaranteed offline use we recommend the native apps.
Install Ritn3D from the App Store or Google Play, or open the editor in your mobile browser. Free, unlimited, no watermark.
