Mancos vs CrystalGen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mancos
Explore the geology of the United States and other regions with this app. Access state geological maps, formation data, and stratigraphic columns. Discover local fossil collections directly from your device.
- Interactive geological maps
- Searchable by name or GPS
- State-level geological data
- Geological formation information
- Regional stratigraphic columns
- Fossil collection discovery
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Mancos brings the geology of the United States and beyond to your iPhone. Tap the map, search by name, or use GPS to instantly locate yourself, show state-level geological maps, the geological formation and the regional stratigraphic column, all supplied by the servers at earth-base.org. Also view any fossil collections from your region, supplied by paleodb.org.
CrystalGen
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Visualize minerals from basic crystallographic information. Symmetry, unit cell dimension, and habit
Screenshots
Verdict
The clearest difference is update cadence: Mancos at every 4 months against CrystalGen's every 38 months. Mancos also leads on chart position (#178 vs unranked). CrystalGen's advantage is iOS requirement (17.2 vs 26.0). 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
Mancos costs $2.99 and CrystalGen $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Mancos ships an update every 4 months, CrystalGen every 38 months. The most recent releases landed on August 31, 2026 and November 30, 2025 respectively.
| Parameter | Mancos | CrystalGen |
|---|---|---|
| Price | $2.99 | $2.99 |
| Rating | 5.0 (13 ratings) — better | — |
| Positive reviews | 70.0% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Every 4 months — better | Every 38 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #178 — better | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 26.0 | 17.2 — better |
| Further details — not scored | ||
| Size | 10 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Hunt Mountain Software | Steve Kliewer |
In-app purchases
Mancos
No in-app purchases
CrystalGen
No in-app purchases
