Lambert vs StraboField
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lambert
This application transforms your iPhone into a specialized geological compass. It accurately measures the dip direction and angle of geological strata, displaying real-time orientation data. Measurements can be enhanced with text and plotted on a map for easy transfer to your computer.
- Geological compass functionality
- Measure dip direction and angle
- Real-time stereographic projection
- Wulff and Schmidt Net projection diagrams
- Add text to measurements
- Plot measurement localities on a map
- Transfer data to computer
Read full descriptionHide full description
This app turns your iPhone into a geological compass, a tool for each geologist. It can be used to measure the direction of dip and the angle of dip of geological strata. The app shows the current device orientation in a realtime stereographic projection. The data can be previewed in projection diagrams (Wulff and Schmidt Net) and transferred to your computer. You can add text to the measurements and plot the measurement localities on a map.
StraboField
This app is a comprehensive tool for geologists to record field observations, capture data like photos and sketches, and create geological maps. It supports various subdisciplines and works offline, syncing data to an open-source platform.
- Record geological observations
- Capture photos and sketches
- Collect orientation and spatial data
- Create geologic maps and sections
- Work offline with custom basemaps
- Organize and back up data
Read full descriptionHide full description
StraboField is a powerful, all-in-one mobile app designed to streamline your geological fieldwork. Record observations, capture photos and sketches, collect orientation data, create geologic maps and stratigraphic sections — all from a single, map-centered platform. Easily collect spatially referenced data using point, line, or polygon-based Spots. Work across multiple scales using nested Spots and high-resolution image basemaps. Designed by geologists, for geologists, StraboField supports workflows across subdisciplines including structural geology, sedimentology, petrology, volcanology, and geomorphology. ** Key Features: ** * Capture field data with photos, sketches, and notes * Collect georeferenced orientation and spatial data * Use custom or built-in basemaps offline * Create multi-scale observations with nested Spots * Organize and back up data locally or to StraboSpot.org * StraboField is fully functional offline, making it ideal for remote fieldwork. Once online, your data can be synced to the StraboSpot digital data system at StraboSpot.org — an open- source platform supported by the National Science Foundation.
Screenshots
Verdict
The clearest difference is update cadence: StraboField at every 11 days against Lambert's every 5 months. StraboField also leads on ratings volume (22 vs 4). Lambert's advantage is rating (5.0 vs 4.6) and review sentiment (75% vs 50%). On price, ads, in-app purchases and monetization model 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.
Lambert holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: StraboField has 22 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 75% of Lambert's written reviews are positive against 50% of StraboField's.
Lambert ships an update every 5 months, StraboField every 11 days. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Lambert | StraboField |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | 4.6 (22 ratings) |
| Positive reviews | 75.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 4 | 22 — better |
| Update frequency | Every 5 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 3 MB | 89 MB |
| Age rating | 4+ | 4+ |
| Developer | Peter Appel | The University of Kansas |
Customer experience
Lambert
StraboField
In-app purchases
Lambert
No in-app purchases
StraboField
No in-app purchases









