Comparison

Image Ruler vs 3D Snap

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Image Ruler

This app allows you to measure objects directly on photos. Simply take a picture, mark a known object for reference, and then draw measurements on other items within the same image. It supports both metric and imperial units and offers intuitive editing tools.

Highlights
  • Measure objects on photos
  • Use a known object as a reference
  • Supports metric and imperial units
  • Intuitive editing interface
  • Organize photos easily
  • Zoom for precision
Features
Read full description

Measure anything in any photo. Take a photo or import one from your library, place a reference object you already know the size of, and instantly calculate real-world measurements — lengths, angles, and areas — directly on the image. How it works Set a reference line on a known object in your photo. From there, every measurement you draw is automatically calculated in real scale. What you can measure Ruler — measure distances and lengths Arrow — annotate with directional measurements Angle — measure the angle between any two lines Area — tap points to outline a surface and calculate its area Built for precision Works entirely offline — no internet required Metric and imperial units Pinch to zoom for precise point placement Undo and redo any change Hide or show your reference line at any time Tips for accurate results For best accuracy, make sure your reference object and the object you're measuring are in the same plane, and that the camera was parallel to both when the photo was taken. Perspective distortion affects results. Measurements are estimates based on the reference you provide.

About

3D Snap

Transform your iPhone into a powerful floor plan creator and 3D scanner using LiDAR technology. Quickly capture room layouts, measure spaces, and visualize objects in 3D for renovation, interior design, or moving.

Highlights
  • LiDAR-powered room scanning
  • Instant floor plan generation
  • 3D object scanning from photos
  • Accurate AR measurements
  • Export floor plans and 3D models
  • Measure walls, areas, and furniture
Features
Read full description

FLOOR PLAN CREATOR & ROOM PLANNER Turn your iPhone into a floor plan creator with 3D Snap. Scan rooms, create floor plans, take measurements, and plan furniture layouts—all in one app. Whether you’re planning a home renovation, moving to a new apartment, or checking if furniture will fit, 3D Snap helps you map out your home and create a practical room plan. Use LiDAR on compatible devices to scan your space and generate 2D floor plans and 3D room models. WHAT CAN YOU DO WITH A FLOOR PLAN? • Plan a renovation: Map rooms and measure areas before choosing flooring, paint, or other materials. • Prepare for a move: Document your new apartment and see how much space you have. • Check furniture fit: Measure rooms and furniture to see whether a sofa, wardrobe, or table will fit. • Plan room layouts: Explore furniture arrangements and make better use of available space. • Share room plans: Send floor plans and measurements to contractors, designers, or clients. SCAN ROOMS & CREATE FLOOR PLANS Turn LiDAR room scans into practical floor plans with 3D Snap. • Scan rooms: Capture room layouts using LiDAR on compatible devices. • Create floor plans: Visualize your space in 2D or 3D. • Review room dimensions: Use room measurements for renovation and furniture planning. • Prepare for your next project: Use your room plan when moving, renovating, or sharing layouts with contractors and designers. MEASURE & VISUALIZE YOUR SPACE • Measure rooms: Get wall dimensions and calculate room areas to estimate how much for flooring or paint you’ll need. • Visualize room design: Experiment with wall and floor colors and textures. • Explore furniture layouts: Try different arrangements before you buy, rearrange, or renovate. • Export floor plans: Share plans as PDFs or image files, and export 3D models in supported formats. AR RULER & LEVEL TOOLS • Measure objects and surfaces: Use the AR ruler for everyday measuring tasks. • Check alignment: Level artwork, shelves, and other items around your home. 3D SCANNER & 3D MODEL MAKER Scan individual objects and create 3D models with 3D Snap. Turn scans of furniture and other items into 3D references for space planning, object documentation, or custom projects. Use LiDAR and AI-powered scanning to capture objects in 3D. 3D SNAP PRO Subscribe to 3D Snap PRO to access all features. Your subscription will be charged to your Apple Account upon purchase confirmation. Subscriptions automatically renew 24 hours before expiration. Manage your subscription in your App Store account settings. Terms of Use: http://bpmob.com/3d_scan_ios/terms/en/ Privacy Policy: http://bpmob.com/3d_scan_ios/privacy/en/

Screenshots

Image Ruler4 screens
3D Snap4 screens

Verdict

The call

The clearest difference is rating: 3D Snap at 3.9 against Image Ruler's 1.6. 3D Snap also leads on ratings volume (582 vs 45) and review sentiment (31% vs 18%). Image Ruler's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (15.1 vs 18.0). On price, update cadence, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Image Ruler sells 5 one-off in-app purchases and 3D Snap sells 10 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

3D Snap holds the better App Store score, 3.9 against 1.6. That said, the two scores are not equally well evidenced: 3D Snap has 582 ratings behind it against 45, so its average is the more settled of the two. Written reviews point the same way: 18% of Image Ruler's written reviews are positive against 31% of 3D Snap's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

Scorecard6 real differences · 5 level
Image Ruler versus 3D Snap: the parameters behind the verdict, then further details
ParameterImage Ruler3D Snap
PriceFreeFree
Rating1.6 (45 ratings)3.9 (582 ratings) — better
Positive reviews17.6% of reviews30.9% of reviews — better
Number of ratings45582 — better
Update frequencyEvery 3 weeksEvery 3 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
Best chart rank—#164 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better18.0
Further details — not scored
Size47 MB170 MB
Age rating4+4+
DeveloperMartin SchurmannBPMobile

Customer experience

Image Ruler

All ratings45 ratings
Positive15.6%
Neutral0.0%
Negative84.4%
Written reviews17 reviews
Positive17.6%
Neutral0.0%
Negative82.4%

3D Snap

All ratings582 ratings
Positive72.2%
Neutral1.7%
Negative26.1%
Written reviews540 reviews
Positive30.9%
Neutral6.3%
Negative62.8%

Bugs and requests

Image Ruler

Not enough reviews yet to summarise bugs or requests.

3D Snap

Reported bugs

3 issues
  • Walls appear crooked in 3D models
  • Furniture obstructs accurate scanning
  • Difficulty cancelling subscription

Requested features

4 requests
  • Ability to edit scanned rooms
  • Option to manually input measurements
  • Export functionality for floor plans
  • Multi-room support

In-app purchases

5 purchases

Image Ruler

One-time5
  • imageRulerPro$0.99
  • Small Tip2 variants$0.99
  • Medium Tip2 variants$2.99
Show 2 more
  • Big Tip$4.99
  • Big tip$4.99
10 purchases

3D Snap

Subscriptions10
  • Premium3 Days trial$5.997 Days
  • Premium$5.997 Days
  • Premium$6.997 Days
Show 7 more
  • Premium3 Days trial$6.997 Days
  • Premium3 Days trial$7.997 Days
  • Premium3 Days trial$8.997 Days
  • Premium$9.997 Days
  • Premium3 Days trial$9.997 Days
  • Premium$19.991 Year
  • Premium$29.991 Year

Questions

Is Image Ruler free?
Image Ruler is free to download, with in-app purchases available.
Is 3D Snap free?
3D Snap is free to download, with in-app purchases available.
Which has better reviews, Image Ruler or 3D Snap?
3D Snap is rated higher. Image Ruler averages 1.6 out of 5 from 45 ratings, while 3D Snap averages 3.9 from 582 ratings.
Do Image Ruler or 3D Snap have ads?
Both Image Ruler and 3D Snap show ads.
Which is updated more often, Image Ruler or 3D Snap?
Image Ruler ships an update every 3 weeks, and 3D Snap every 3 weeks. Most recently, Image Ruler was updated on November 6, 2026 and 3D Snap on November 8, 2026.

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