Outcrop vs GCTS gTest
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).
GCTS gTest
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This app functions as the user interface for the GCTS SCON-S based machines and Data Cube and allows the user to perform automatic control and data acquisition tests either performing pre-defined standard tests or custom-defined Universal Stages. Users can customize several parameters to better suit their needs.
Screenshots
Verdict
The clearest difference is iOS requirement: Outcrop at 11.0 against GCTS gTest's 15.0. 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Outcrop ships an update every 5 weeks, GCTS gTest every 3 weeks. Both last shipped on October 24, 2026.
| Parameter | Outcrop | GCTS gTest |
|---|---|---|
| Price | Free | Free |
| Rating | 1.7 (3 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 5 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 21 MB | 145 MB |
| Age rating | 4+ | 4+ |
| Developer | Next-Shot | GCTS Testing Systems |
In-app purchases
Outcrop
No in-app purchases
GCTS gTest
No in-app purchases
