Comparison

Outcrop vs CADraw

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

Head to head
About

Outcrop

This app aids geologists in field studies by allowing them to capture high-resolution images of outcrops. Users can interpret geological features, add annotations, take measurements, and export data to construct 3D geological models.

Highlights
  • High-resolution outcrop imaging
  • Interpretation of facies, structures, and boundaries
  • Annotation and measurement tools
  • Dip and azimuth measurement
  • GPS location integration
  • 3D geological model export (GOCAD format)
Features
Read full description

This application is designed for the geologist to use during field studies. It lets the user take pictures of the outcrop, interpret the high resolution image and export this information in 3D to construct a 3D geological model. On the image, the user can interpret facies intervals, sedimentary structures and boundaries. The user can add annotations anywhere, measure width/height of sediment bodies (channels, lobes, etc.), and compute bodies statistics. Using an iphone or ipad, the user can measure dip and azimuth and locate this measure on the picture or use its GPS location to export dip markers to the 3D model. Once the user defines the image scale, all interpreted boundaries and intervals can be exported in 3D in GOCAD format (image, interpretations boundaries, dip/azimuth and facies intervals).

About

CADraw

Create and edit precise technical drawings with a variety of tools. Supports layers, annotations, and export to common formats like PDF and DXF. Ideal for detailed design work on mobile devices.

Highlights
  • Draw lines, circles, arcs
  • Shape editing and modification
  • Angle constraints
  • Endpoint and midpoint snapping
  • Numeric keypad for precise input
  • Layer management
  • Annotation tools
  • Export to PDF and DXF
Features
Read full description

Easily draw shapes such as lines, circles, and arcs, and easily edit and modify shapes with just a touch of the shape. Angle constraints can specify commonly used angles of 5 º -90 º. Snap endpoints, midpoints, vertical points, tangents, and intersections, allowing you to draw accurately. There are also dynamic auxiliary points that provide you with dynamic assistance when drawing each line. The numeric keypad can accurately specify distances during drawing or modification. Drag the dimension edit point to convert it to horizontal or vertical dimensions. Angle annotations, radius annotations, and arc annotations can all rival the excellent performance of desktop applications in creation or editing. Layer management, displaying or hiding layers, and locking layers. Annotation management can add annotation styles, modify annotation styles, colors, line widths, and other annotation shapes. The drawn drawings can be exported as PDF files or DXF data exchange files, and can be shared on the computer and opened using AutoCAD. Thank you very much to Graziano from Italy for providing Italian language translation and Сергей Ломонос Provide Russian translation.

Screenshots

Outcrop2 screens
CADraw4 screens

Verdict

The call

The clearest difference is review sentiment: CADraw at 50% against Outcrop's 0%. CADraw also leads on rating (2.9 vs 1.7) and update cadence (fortnightly vs every 5 weeks). Outcrop's advantage is in-app purchases (none vs 6) and iOS requirement (11.0 vs 13.0). On price, ads 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. CADraw sells 6 in-app purchases, starting at $1.39 per month. Outcrop asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CADraw holds the better App Store score, 2.9 against 1.7. Both are backed by a comparable volume of ratings — 3 and 10 respectively. Written reviews point the same way: 0% of Outcrop's written reviews are positive against 50% of CADraw's.

UpkeepUpdate frequency

Outcrop ships an update every 5 weeks, CADraw fortnightly. The most recent releases landed on June 1, 2026 and September 20, 2026 respectively.

Scorecard7 real differences · 3 level
Outcrop versus CADraw: the parameters behind the verdict, then further details
ParameterOutcropCADraw
PriceFreeFree
Rating1.7 (3 ratings)2.9 (10 ratings) — better
Positive reviews0.0% of reviews50.0% of reviews — better
Number of ratings310 — better
Update frequencyEvery 5 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better13.0
Further details — not scored
Size21 MB175 MB
Age rating4+4+
DeveloperNext-Shot诚 张

Customer experience

Outcrop

All ratings3 ratings
Positive0.0%
Neutral33.3%
Negative66.7%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

CADraw

All ratings10 ratings
Positive40.0%
Neutral0.0%
Negative60.0%
Written reviews38 reviews
Positive50.0%
Neutral18.4%
Negative31.6%

In-app purchases

None

Outcrop

No in-app purchases

6 purchases

CADraw

Subscriptions4
  • Monthly subscription$1.391 Month
  • per month$2.991 Month
  • Annual subscription$13.901 Year
Show 1 more
  • per year$26.001 Year
One-time2
  • Upgrade to the full version$69.99
  • Full version$99.99

Questions

Is Outcrop free?
Outcrop is free to download, with no in-app purchases.
Is CADraw free?
CADraw is free to download, with in-app purchases available.
Which has better reviews, Outcrop or CADraw?
CADraw is rated higher. Outcrop averages 1.7 out of 5 from 3 ratings, while CADraw averages 2.9 from 10 ratings.
Do Outcrop or CADraw have ads?
Neither Outcrop nor CADraw shows ads.
Which is updated more often, Outcrop or CADraw?
Outcrop ships an update every 5 weeks, and CADraw fortnightly. Most recently, Outcrop was updated on June 1, 2026 and CADraw on September 20, 2026.

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