Lambert vs GeoInspect
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
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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.
GeoInspect
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"Create digital inspections for your sites that can only be completed when entering the geofence of that property for full integrity. Site Managers and Site Inspectors can easily complete various digital inspections with a few easy clicks that gets submitted into a digital catalogue for easy future retrieval and sorting. FEATURES INCLUDE: -Various digital inspections for sites that can be inputted on your smart device instead of the traditional inefficient pen and paper method. -Inspections can only be started when inside a geofence area of a site that was previously created by a manager. -Get push notifications in the background when you enter a geofence of a site asking “if you are there to complete an inspection”. Inspections can then be started with a simple button press -Service Requests (coming soon) This app tracks your location in the background. This is required for the background location mode to support polygon geofences and nearby place detection, which cannot be accomplished with region monitoring or visit monitoring. This feature is used to ensure digital inspections can only be completed within a geofenced area (for integrity) and for the user experience to receive real time push notifications when entering a geofence."
Screenshots
Verdict
The clearest difference is update cadence: GeoInspect at fortnightly against Lambert's every 5 months. GeoInspect also leads on iOS requirement (14.0 vs 16.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Lambert ships an update every 5 months, GeoInspect fortnightly. The most recent releases landed on June 1, 2026 and September 14, 2026 respectively.
| Parameter | Lambert | GeoInspect |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Peter Appel | Caret LTD |
In-app purchases
Lambert
No in-app purchases
GeoInspect
No in-app purchases









