6 Best Free Architecture Apps for iPad

The best free architecture apps for iPad in 2026 give architects, students, and design professionals real working tools without paywalls or trial clocks. From Shapr3D for CAD modeling to Polycam for LiDAR scanning, the picks below cover sketching, 3D work, plan markup, and floor plan capture, all on a real free tier. If you need a free architecture app for iPad that lets you sketch plans, view 3D models, or draft anywhere, strong options exist, yet many free tools still disappoint. Numerous apps limit exports, lock layers, or demand upgrades before basic use. We ran hands-on tests to find the apps that truly perform. Whether you study architecture, oversee projects, or refine design ideas, the picks below handle key tasks without upfront payment. For a wider look at paid and free tools together, see our guide on the best architecture apps for iPad.

How We Chose the Best Free Architecture Apps for iPad

We selected only free architecture apps for iPad that are either 100% free or offer a solid, usable free tier without forcing upgrades for basic tasks. Each app must provide core tools with no trial clocks, no locked exports, and no paywalls for basics. We tested each architecture app for iPad on a current iPad model with Apple Pencil support. Each app completed core tasks such as sketching plans, creating 3D models, building floor layouts, scanning rooms, and adding markups. We also checked stability, export support, and storage usage. For a deeper look at how the device choice itself affects performance, see our breakdown on the iPad Pro for architecture students. To keep results objective, we rated each app using the same five metrics:

• Architectural utility – How well the app supports real-world tasks like drafting, modeling, or site work
• Readability of exports – Whether exported files stay clear, usable, and compatible with other software
• Customization – How much control the user has over tools, layers, output, and settings
• Ease of use – How simple the interface feels during fast-paced design work
• Value for architects – Whether the free version offers enough depth for real use

Each app receives a score for every category using a 5‑star system. This allows quick comparison across different types of iPad architecture apps. We also reviewed file formats (PDF, DXF, OBJ), interface clarity, app size, and device storage impact. Apps that crash, restrict exports, or bury tools behind paywalls did not qualify. Architects on Reddit frequently recommend these same tools in their professional practice. The result is a clean, tested list of architecture apps that work on real projects.

Top 6 Free Architecture Apps for iPad

Some iPad architecture apps excel at precise sketch and CAD work; others scan rooms with LiDAR or display BIM models on site. Each entry here lists strengths, limits, free‑tier notes, upgrade price, and our score. If you want iPad apps for architects that feel professional, start with this list and pick an architecture app for iPad that fits your workflow and budget. Every pick below runs on current iPadOS and supports Apple Pencil. To understand how Apple Pencil itself improves design accuracy, our guide on architectural sketching for beginners covers the core hand-drawing principles that translate directly to iPad workflows.

Quick Comparison: All 6 Apps at a Glance

App	Best For	Free Tier Limit	Pro Upgrade (from)	Overall Score
Shapr3D	Fast CAD with Apple Pencil	2 active projects	~$29/mo	★★★★★
Concepts	Freehand sketch & vector draft	Core tools, 5 layers	~$5/mo	★★★★★
Polycam	3D scans & LiDAR models	Unlimited captures	~$27/mo	★★★★★
Morpholio Trace	Plan markup & scale sketch	5 projects	~$9.99/yr	★★★★★
BIMx	3D models & 2D sheets on-site	Full viewer access	In‑app (varies)	★★★★☆
RoomScan Pro	Quick floor plan capture	Core scan modes	~$9.99/mo	★★★★☆

1. Shapr 3D CAD modeling

Best for: Fast CAD work with Apple Pencil We placed Shapr3D first because it turns the iPad into a true CAD workspace and does not require payment for basic output. What we like most: Apple Pencil feels natural and quick, with speed and control close to desktop CAD. Visit the official Shapr3D site for the latest feature list and education licensing. Sketch, add constraints, and extrude with clean, tap‑first controls. The app handles quick form studies, early concepts, and precise parts with the same toolset. Exports cover common formats, STL, STEP, and DWG, so the move to desktop CAD stays smooth. The free tier allows two active projects with full edit tools and export access, no tricks or locked outputs. Interface: A clean canvas stays in view, with a compact tool rail on the side. One tap opens dimension or constraint options. Two‑finger gestures move the camera. A right‑hand panel manages views, history, and exports without clutter. What you get for free: Up to two active projects, full access to core design tools, and export in standard formats like STL and DWG – all without upgrades or hidden limits. Our score:

• Architectural utility: ★★★★★
• Readability of exports: ★★★★★
• Customization: ★★★★☆
• Ease of use: ★★★★★
• Value for architects: ★★★★★

Final thoughts: As a fully functional free architecture app for iPad (within its project limit), Shapr3D delivers clean CAD output and a responsive design workflow, making it a standout choice when speed and precision matter.

2. Concepts

Best for: Freehand sketch and vector draft on an infinite canvas Concepts delivers crisp vector lines and flexible layout control for architects who prefer hand‑drawn work. Use Apple Pencil to sketch plans, set dimensions, and refine diagrams. The infinite canvas supports scale grids, multiple layers, and precise selection. Exports land in PDF, SVG, PNG, and DXF, so hand‑off to CAD stays clean. The free tier covers core tools, layers, and standard export, with no paywall for basic work. Interface: A blank canvas sits at the center. A radial menu opens pens, pencils, shapes, and measuring tools. A side panel manages layers, grids, and scale. Pinch to zoom and two‑finger pan keep navigation fast. What you get for free: Core drawing tools, unlimited canvases, multi-layer support, and export in standard formats, all without upgrade prompts or locked features. Our score:

• Architectural utility: ★★★★★
• Readability of exports: ★★★★★
• Customization: ★★★★☆
• Ease of use: ★★★★★
• Value for architects: ★★★★★

Final thoughts: Concepts stands out among free architecture apps for iPad. It pairs natural hand sketch with vector precision and clean export, a strong fit for quick studies and early design drafts.

3. Polycam 3D Scanner, LiDAR, 360

Best for: 3D scans and LiDAR models of interior spaces We included Polycam because it helps architects document real spaces with the iPad LiDAR sensor or photogrammetry. The app builds detailed 3D models, floor plans, and mesh exports from a quick walkthrough, ideal for early site work, renovation surveys, or virtual layout review. The official Polycam site lists current device requirements and supported scan modes. Polycam saves scans to Photos and creates large file sets, especially with LiDAR. Over time, these files occupy gigabytes, slow down other apps, and raise the risk of failed exports. To prevent that, it’s smart to free up some iPad space before or after each scan session. We typically use a free cleaner app like Clever Cleaner to automatically remove duplicate photos, screenshots, oversized media, and other clutter. What you get for free: Core scan tools, unlimited captures, and standard export formats like OBJ and DXF. Pro tiers add extra formats and edit tools, but the free version covers core needs for most tasks. Interface: Polycam opens in scan mode. Tap to start, move through the space, then save the scan. A visual mesh appears in real time. Saved scans sit in a grid, ready for export. Our score:

• Architectural utility: ★★★★★
• Readability of exports: ★★★★★
• Customization: ★★★★☆
• Ease of use: ★★★★☆
• Value for architects: ★★★★★

Final thoughts: Polycam fits well in an architect’s mobile toolkit. Scan files grow fast, so a quick cleanup keeps your iPad in good shape and makes export safer, especially before client sessions or large site work.

4. Morpholio Trace – Sketch CAD

Best for: Plan markup and scale‑accurate sketch over photos and PDFs Morpholio Trace lets architects sketch over plans, site photos, and 3D views on iPad. Add scale, dimension lines, notes, and shadow studies with precision. Use it to review layouts, propose revisions, and explain design intent to clients. The free tier includes core tools, multi‑layer work, brushes, stencils, PDF export, and full Apple Pencil support. The official Morpholio Trace page covers RoomPlan integration and scale-aware drawing features in detail. Interface: A full‑screen canvas shows your base plan or image. A slim toolbar keeps pen, scale, triangle, stencils, and layers within reach. One tap adds notes or lines; one tap exports to PDF. What you get for free: Layers, core sketch tools, and PDF export, with no limits on basic drawing. Extras like folders, AR utilities, and custom brushes remain optional. Our score:

• Architectural utility: ★★★★★
• Readability of output: ★★★★★
• Customization: ★★★★☆
• Ease of use: ★★★★★
• Value for architects: ★★★★★

Final thoughts: A standout architecture app for iPad for fast markup and scale‑true sketch. Among free architecture apps for iPad, Morpholio Trace gives iPad apps for architects a clean bridge between concept and presentation without cost.

5. BIMx

Best for: 3D models and 2D sheets on-site BIMx links the office and field in one viewer. Open architectural models, move through spaces, and jump between sheets and live model views. Use it to brief clients, verify layouts, and keep contractors aligned. The free viewer covers core access to projects without a paywall, which keeps it relevant to free architecture apps for iPad. Graphisoft, the maker of Archicad, hosts the official BIMx page with tutorials and supported model formats. To understand how BIM fits into modern practice beyond the viewer, see our overview on BIM in architecture. Interface: A home screen loads projects with one tap. On‑screen controls and gestures handle movement. A side panel ties 2D sheets to the exact spot in 3D, so details stay clear. What you get for free: Full access to the viewer, model navigation, and basic interaction tools. Advanced features like markups and Smart Measure require an upgrade. Our score:

• Architectural utility: ★★★★☆
• Readability of models: ★★★★☆
• Customization: ★★★☆☆
• Ease of use: ★★★★★
• Value for architects: ★★★★☆

Final thoughts: A solid architecture app for iPad for model walk‑throughs and sheet access. Among iPad apps for architects, BIMx stands out as a free architecture app that keeps coordination simple and fast.

6. RoomScan Pro LiDAR Floor Plans

Best for: Quick floor plan capture without manual drafts RoomScan Pro creates floor plans with LiDAR or wall taps. Architects use it for fast interior layouts, ideal for site surveys, remodel scopes, and field measurements. Exports include DXF, PDF, and IFC, so hand‑off to CAD stays simple. The free tier covers core scan modes, which keep it relevant to free architecture apps for iPad. Interface: A clear home screen lists scan modes. Pick LiDAR or wall‑tap. A live view shows alignment and locks each wall as you move. After the last corner, review the plan, place doors and windows, and export. What you get for free: Core scan modes for room capture, with standard export options included. Upgrades unlock advanced formats and pro-level tools. Our score:

• Architectural utility: ★★★★☆
• Readability of output: ★★★★☆
• Customization: ★★★☆☆
• Ease of use: ★★★★★
• Value for architects: ★★★★☆

Final thoughts: A dependable architecture app for iPad for rapid room capture and clean exports. Among iPad apps for architects, RoomScan Pro stands out as a free architecture app that saves time on site and reduces manual errors.

Score Comparison: Free Architecture Apps for iPad

App	Architectural Utility	Export Readability	Customization	Ease of Use	Value for Architects
Shapr3D	★★★★★	★★★★★	★★★★☆	★★★★★	★★★★★
Concepts	★★★★★	★★★★★	★★★★☆	★★★★★	★★★★★
Polycam	★★★★★	★★★★★	★★★★☆	★★★★☆	★★★★★
Morpholio Trace	★★★★★	★★★★★	★★★★☆	★★★★★	★★★★★
BIMx	★★★★☆	★★★★☆	★★★☆☆	★★★★★	★★★★☆
RoomScan Pro	★★★★☆	★★★★☆	★★★☆☆	★★★★★	★★★★☆

Export Format Support by App

App	PDF	DXF	DWG	STL	OBJ	STEP	IFC	SVG	PNG/JPG
Shapr3D	Pro	Pro	Pro	✅	Pro	Pro	—	Pro	Pro
Concepts	✅	Pro	—	—	—	—	—	Pro	✅
Polycam	Pro	Pro	—	Pro	✅	—	—	—	✅
Morpholio Trace	✅	Pro	—	—	—	—	—	—	✅
BIMx	—	—	—	—	—	—	—	—	✅
RoomScan Pro	✅	✅	—	—	✅	—	✅	—	✅

✅ = Available on free tier | Pro = Requires paid upgrade | — = Not supported. BIMx is primarily a viewer app and does not export design files directly.

Free Tier vs Pro: What Each Upgrade Unlocks

App	Free Tier Includes	Pro Upgrade Adds	Upgrade Price (from)
Shapr3D	2 designs, all modeling tools, low‑res STL/3MF export, multi‑platform access	Unlimited designs, STEP/IGES/DWG/DXF/OBJ export, visualization, technical drawings, priority support	~$29/mo
Concepts	Infinite canvas, selection of pens & brushes, 5 layers, JPG export, color wheels	Essentials: infinite layers, precision tools, SVG/DXF/PNG/PSD export. Subscription: all brushes, objects, sharing	~$5/mo or ~$30/yr
Polycam	Unlimited captures, on‑device processing, OBJ export, ruler tool	Higher‑res processing, extra export formats (FBX, STL, DXF), floor plan generation, advanced editing	~$27/mo
Morpholio Trace	5 projects, basic pens & brushes, layers, PDF/JPG export, scale ruler, instant scale	Plus ($9.99/yr): 20 projects, stencils, PDF markup. Pro ($19.99/yr): unlimited projects, perspective tools, AR walk, smart fill	$9.99/yr
BIMx	Full 3D/2D viewer, model navigation, hyper‑model, sun positioning, screenshot export	Smart Measure, project markups, BCF issue creation, cut plane color picker	In‑app purchase
RoomScan Pro	Core LiDAR & wall‑tap scan modes, PDF/DXF/IFC export, Apple Pencil annotation	Advanced export formats (Xactimate ESX, RapidSketch, Metropix), additional pro scan features	~$9.99/mo

Which App to Pick Based on Your Task

Task / Workflow	Recommended App	Why It Fits
3D CAD modeling & mass studies	Shapr3D	Full parametric CAD with Apple Pencil, desktop‑grade precision on iPad
Early concept sketches & diagrams	Concepts	Infinite vector canvas with scale grids and flexible pen tools
Site survey & room documentation	Polycam	LiDAR + photogrammetry capture builds 3D models from a walkthrough
Plan markup & design review	Morpholio Trace	Scale‑accurate sketch over PDFs, photos, and 3D views with dimension tools
Client presentation & BIM on‑site	BIMx	Interactive 3D walkthrough linked to 2D sheets, ideal for client briefings
Quick floor plan capture	RoomScan Pro	LiDAR or wall‑tap scanning creates floor plans in seconds with CAD‑ready export
Renovation survey with before/after	Polycam + Morpholio Trace	Scan existing space with Polycam, then sketch revisions over the model in Trace
Student project & portfolio work	Shapr3D + Concepts	Shapr3D free EDU license for students; Concepts free tier covers sketch needs

How to Choose the Right Free Architecture App for iPad

Picking among free architecture apps for iPad becomes simple once you match the app to a clear task. Architects and students often install three or four of these tools at once, since each one solves a different part of the design process. Use the four checks below to narrow your choice. 1. Define your primary task first. If your day is mostly sketching and concept work, start with Concepts or Morpholio Trace. If you need parametric 3D, go with Shapr3D. If you spend time on site, Polycam and RoomScan Pro should be on the home screen. 2. Check export formats against your team workflow. Studios that hand off to AutoCAD or Revit need DWG and DXF support, while a freelance designer may live happily with PDF and PNG exports. The export format table above maps every free tier limitation in one view. 3. Match the app to your iPad model. LiDAR-based apps like Polycam and RoomScan Pro deliver their best results on iPad Pro models with the LiDAR Scanner. For full guidance on hardware, our review of the best drawing tablets for architects and students compares iPad Pro, Surface Pro, and Wacom options side by side. 4. Plan for free-tier limits. Most free apps cap the project count, layer count, or export resolution. Knowing the limit before you start saves you from a rushed upgrade decision mid-project. The renovation survey workflow, for example, often combines Polycam (for the existing-condition scan) with Morpholio Trace (for redline sketches), and both stay inside the free tier when used in tandem. For a broader breakdown of how iPads fit into daily architectural practice, see our discussion on whether architects should use iPad for designing, which covers workflow integration in detail.

What is the Best Free Architecture App for iPad in 2026?

The best free architecture app for iPad in 2026 depends on your main task. Shapr3D leads for parametric 3D CAD with Apple Pencil, Concepts for vector sketching and diagrams, and Morpholio Trace for plan markup. For LiDAR scans, Polycam stays the strongest free pick, with RoomScan Pro a close second for fast floor plans. If you need only one app to start, most architects we tested recommend Concepts as the entry point. The free tier offers an infinite vector canvas, scale grids, and clean PDF export, all without project limits. Once your work moves into 3D modeling or site documentation, Shapr3D and Polycam are the natural next picks. Our broader article on the 10 best architecture tools of 2026 places these iPad apps in the wider context of programs, AI tools, and other tablet workflows.

Frequently Asked Questions

Are there fully free architecture apps for iPad with no upgrades?

Most architecture apps for iPad use a freemium model with a usable free tier rather than a 100% free build. Concepts, Polycam, and BIMx each offer real working features at no cost. Shapr3D and Morpholio Trace cap project count on the free tier, but core tools remain accessible without payment.

Can I use these free iPad apps for professional architecture work?

Yes, all six apps reviewed here meet professional standards within their free-tier limits. Shapr3D and Concepts produce clean CAD-ready exports, and Morpholio Trace is widely used in studio practice. The main constraint on the free tier is volume, such as the number of projects or export formats, not output quality.

Which iPad model is best for free architecture apps?

The iPad Pro with the LiDAR Scanner gives the widest compatibility, especially for Polycam and RoomScan Pro. The iPad Air with M-series chips also runs every app in this list smoothly. The base iPad model handles sketching apps like Concepts and Morpholio Trace well, but it does not support LiDAR-based scanning.

Do these free architecture apps work without an Apple Pencil?

The apps in this list work with a finger or third-party stylus, but the Apple Pencil unlocks pressure sensitivity, tilt detection, and palm rejection. For sketching and CAD work, the Apple Pencil greatly improves precision in Shapr3D, Concepts, and Morpholio Trace. For scanning apps like Polycam, an Apple Pencil is helpful but not required.

Final Verdict

Free architecture apps for iPad cover more ground than most expect. Some focus on fast 3D model work or precise sketching; others excel at floor scans or plan markup. Key point: A light, no‑cost tool can meet professional demands with the right workflow. For concept sketch, Concepts and Morpholio Trace deliver flexible control and scale accuracy. Shapr3D handles mass studies and CAD prep with clean export. RoomScan Pro captures real spaces with speed and solid accuracy, while BIMx offers a clear model view and sheet access on site. No single app fits every case. Choose based on task, format needs, and project scale. With these iPad architecture apps, an architect can sketch, scan, model, or mark up without cost. If you seek a free app that feels professional, start with this list. For a deeper look at how iPads support studio and field work end to end, see our breakdown on how iPads transform the workflow for architecture students.

Last updated: 18 June 2026