Comparison

3D Scratchpad vs Snap Draw Iso

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

Head to head
About

3D Scratchpad

Create 3D models with a user-friendly design tool. Freehand draw in 3D using primitive shapes and gestures. Manipulate objects with augmented reality and share your creations as .usdz files.

Highlights
  • Freehand 3D drawing
  • Primitive solid shapes
  • Intuitive gestures
  • Augmented reality manipulation
  • Share as .usdz files
Features
Read full description

3D Scratchpad is an easy-to-use, full-featured design tool for creating 3D models. Freehand draw in three dimensions using simple primitive solid shapes and intuitive gestures. Manipulate objects as if they were in the real world with augmented reality, and share your models as .usdz files for viewing in augmented reality. 3D Scratchpad creates a short path between design ideas and useful 3D models for designers, modelers, makers, gamers, 3D-printing enthusiasts, hobbyists, educators, engineers, and architects. Use 3D Scratchpad to create and fabricate prototypes, to model new products, parts, and structures, and to create and share 3D art and designs. 3D Scratchpad enables you to design in the real world. Built to enable immersive, intuitive, and interactive design, 3D Scratchpad unlocks your design creativity and gives you the tools you need to create and share 3D models. Purchasing an auto-renewing 3D Scratchpad Subscription enables the ability to save and share 3D models.

About

Snap Draw Iso

Create isometric drawings with ease using a crosshair and snap sound for precise line connections. Customize grids, colors, and import/export various formats. Offers advanced features like bitmap brushes and gradient fills for detailed designs.

Highlights
  • Isometric and 2D grids
  • Customizable colors
  • Import/Export formats
  • Fill options (solid, gradient, pattern)
  • Large canvas with pan/zoom
  • Text and FX options
  • Bitmap and vector layer mixing
Features
Read full description

Snap Draw Iso makes drawing isometric images a snap. With a crosshair and snap sound effect, you will always be able to connect lines perfect and quickly. Some Features Include: - Traditional square 2-D grid or Isometric grid - Change background color, line colors, and grid colors - Import and Export various formats - Fill fill solid colors, custom gradients, or patterns for the library - Huge Canvas for detailed images with easy pan and zoom touch feature - Text and FX options - Draw with a bitmap brush and mix bitmap layer with vector layor - Zoom to pixel level for fine tuning - Share your drawings on social media or via email - Customizable drawing options

Screenshots

3D Scratchpad4 screens
Snap Draw Iso4 screens

Verdict

The call

The clearest difference is review sentiment: Snap Draw Iso at 80% against 3D Scratchpad's 19%. Snap Draw Iso also leads on rating (4.0 vs 2.7) and in-app purchases (none vs 3). 3D Scratchpad's advantage is ads (none vs shown) and ratings volume (12 vs 4). On price and device support 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. 3D Scratchpad sells 3 in-app purchases, starting at $1.99 per month. Snap Draw Iso asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Snap Draw Iso holds the better App Store score, 4.0 against 2.7. Both are backed by a comparable volume of ratings — 12 and 4 respectively. Written reviews point the same way: 19% of 3D Scratchpad's written reviews are positive against 80% of Snap Draw Iso's.

UpkeepUpdate frequency

3D Scratchpad ships an update every 15 months, Snap Draw Iso every 3 days. The most recent releases landed on October 13, 2026 and September 29, 2026 respectively.

Scorecard8 real differences · 2 level
3D Scratchpad versus Snap Draw Iso: the parameters behind the verdict, then further details
Parameter3D ScratchpadSnap Draw Iso
PriceFreeFree
Rating2.7 (12 ratings)4.0 (4 ratings) — better
Positive reviews18.5% of reviews80.0% of reviews — better
Number of ratings12 — better4
Update frequencyEvery 15 monthsEvery 3 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.011.0 — better
Further details — not scored
Size7 MB18 MB
Age rating4+4+
DeveloperEngineered Stuffandrew bell

Customer experience

3D Scratchpad

All ratings12 ratings
Positive41.7%
Neutral0.0%
Negative58.3%
Written reviews27 reviews
Positive18.5%
Neutral7.4%
Negative74.1%

Snap Draw Iso

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

3 purchases

3D Scratchpad

Subscriptions3
  • One Month Subscription$1.991 Month
  • Six Month Subscription$6.996 Months
  • One Year Subscription$9.991 Year
None

Snap Draw Iso

No in-app purchases

Questions

Is 3D Scratchpad free?
3D Scratchpad is free to download, with in-app purchases available.
Is Snap Draw Iso free?
Snap Draw Iso is free to download, with no in-app purchases.
Which has better reviews, 3D Scratchpad or Snap Draw Iso?
Snap Draw Iso is rated higher. 3D Scratchpad averages 2.7 out of 5 from 12 ratings, while Snap Draw Iso averages 4.0 from 4 ratings.
Do 3D Scratchpad or Snap Draw Iso have ads?
Snap Draw Iso shows ads; 3D Scratchpad does not.
Which is updated more often, 3D Scratchpad or Snap Draw Iso?
3D Scratchpad ships an update every 15 months, and Snap Draw Iso every 3 days. Most recently, 3D Scratchpad was updated on October 13, 2026 and Snap Draw Iso on September 29, 2026.

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