Cluster2A vs LetsGeo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cluster2A
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Machine learning has become a powerful tool, revolutionizing how industries operate. Unsupervised learning is a machine learning method that analyzes and discovers hidden patterns, structures, or relationships in unclassified or unlabeled data. It is widely used to improve customer experience, provide personalized recommendations, optimize operations, and drive innovation. K-means and DBSCAN are two commonly used unsupervised learning algorithms. Common application scenarios: Customer and market segmentation: Grouping customers based on their behavior, demographic characteristics, or purchase history for targeted marketing and personalized recommendations. Retail analytics: Identifying "hotspot areas" in a store through cluster analysis of customer locations. Cluster2A combines two machine learning algorithms, K-means and DBSCAN, to help users with small datasets take their first steps into the world of machine learning more easily and enjoyably.
LetsGeo
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Let’sGeo - Professional Geological Field Logging App Let’sGeo is an offline-first app for geological and geotechnical logging, drilling and mineral exploration. Designed for fieldwork and core sheds, it combines geological observations, structural measurements, drilling data and mapping. Works fully offline, with optional upload to your own servers. Key Features Geological & structural logging - Field points: lithology, mineralization, alteration and weathering - Geological codes and free-text descriptions - Compass and clinometer for dip and dip direction - Bedding, joints, faults, shear zones and veins - Vein thickness, mineralogy and density - Schmidt & Wulff stereonets Drilling & sampling - Drillhole runs and recovery tracking - Interval sampling with metadata - Geological samples linked to logging intervals Geotechnical logging - Single structural records linked to depth - Interval-based geotechnical domains - Core recovery, SCR and RQD - Rock mass parameters and fracture angle classes - Core boxes with depth-linked photos Mapping & GIS - GPS points and drillholes - WGS-84, UTM and Gauss-Krüger coordinates - GPS tracks and accuracy recording - Custom markers, colors and visibility controls - Compass-oriented maps with live azimuth - Distance and true bearing to points and drillholes - KMZ layers with drawing and editing tools - KMZ layer ordering and management - Offline satellite imagery - Spectral maps for mineral exploration - SWIR lithology, clay alteration and iron oxide composites - Download spectral scenes for offline interpretation Reference Collection - Project-based geological reference collections - Rock photos, descriptions and geological notes - Import and export between projects and devices - Reference image similarity search - Compare field photos with reference samples - Find similar rocks using image analysis of color, grain characteristics, textures and veins Media & data - Photos, video and audio linked to observations - Geological field sketch sheets - Photo annotation and markup - Local offline data storage - Full project export and import - Project Database Archive export - Merge archives from multiple devices - Cross-platform exchange between Android and iOS Connect DB - Your Own Server - Direct project upload to your PostgreSQL database - Optional S3-compatible storage for media - Use your own company or project infrastructure - Multiple geologists can upload to one shared project - Incremental upload: add new and update changed records - Unchanged records are skipped - Existing server data is preserved - Manual, one-way upload without automatic downloads - No developer-operated cloud required Privacy & Data Control Let’sGeo works offline and stores project data locally. Connect DB optionally uploads data directly to your own PostgreSQL database and S3-compatible storage. No developer-operated cloud is required. Your data. Your infrastructure. Your control. Privacy Policy: https://letsgeo.world/privacy.php Terms of Use (EULA): https://letsgeo.world/terms.php
Screenshots
Verdict
The clearest difference is update cadence: LetsGeo at weekly against Cluster2A's every 3 months. LetsGeo also leads on iOS requirement (18.6 vs 26.2). 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. Cluster2A sells 2 one-off in-app purchases and LetsGeo sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Cluster2A ships an update every 3 months, LetsGeo weekly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | Cluster2A | LetsGeo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 26.2 | 18.6 — better |
| Further details — not scored | ||
| Size | 9 MB | 89 MB |
| Age rating | 4+ | 4+ |
| Developer | Chu-Yi Chang | Letsmine SIA |
In-app purchases
Cluster2A
- K-means Model$1.99
- DBSCAN Model$1.99
LetsGeo
- Full Access Monthly$4.991 Month









