Outcrop vs CADraw
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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)
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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).
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.
- 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
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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
Verdict
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
Both are free to download. CADraw sells 6 in-app purchases, starting at $1.39 per month. Outcrop asks for nothing beyond the download.
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.
Outcrop ships an update every 5 weeks, CADraw fortnightly. The most recent releases landed on June 1, 2026 and September 20, 2026 respectively.
| Parameter | Outcrop | CADraw |
|---|---|---|
| Price | Free | Free |
| Rating | 1.7 (3 ratings) | 2.9 (10 ratings) — better |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 3 | 10 — better |
| Update frequency | Every 5 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 21 MB | 175 MB |
| Age rating | 4+ | 4+ |
| Developer | Next-Shot | 诚 张 |
Customer experience
Outcrop
CADraw
In-app purchases
Outcrop
No in-app purchases
CADraw
- Monthly subscription$1.391 Month
- per month$2.991 Month
- Annual subscription$13.901 Year
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- per year$26.001 Year
- Upgrade to the full version$69.99
- Full version$99.99









