Mancos vs geotimescale 2
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.
geotimescale 2
Access a comprehensive geologic time scale for Earth's history, detailing eons, eras, periods, epochs, and ages with their corresponding dates. Ideal for students and geology enthusiasts, it provides quick reference and additional information on significant historical events.
- Geologic time scale reference
- Eons, eras, periods, epochs, and ages
- Numerical dates for time divisions
- Information on historical phenomena
- Offline access
- Two different view options
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Now a Universal app for iOS 9. Need a quick reference to the geologic time scale of Earth's history? Find out, for example, when dinosaurs ruled the world or when reptiles first appeared. This is an excellent reference for students, educators, professional geologists, or anyone interested in geology. EASY TO USE: This is an easy, quick way to get the names and numerical dates of each of the eons, eras, periods, epochs, and ages. Just select which view you want and then scroll through the time scale. COMPLETELY SELF-CONTAINED: No internet connection required. Ideal for field use. TWO DIFFERENT VIEWS FEATURED: The Geologic Time Scale Without Ages shows the names of eons, eras, periods, and epochs and their corresponding dates. Touching the With Ages button adds the names of the ages within the epochs along with their corresponding dates. Information icons appear at several points on the scale. Touching each of these icons reveals additional information about which phenomenon occurred at that time such as the extinction of the dinosaurs at 66 Ma.
Screenshots
Verdict
The clearest difference is price: geotimescale 2 at Free against Mancos's $2.99. geotimescale 2 also leads on iOS requirement (8.4 vs 26.0). Mancos's advantage is rating (5.0 vs 4.5). On review sentiment, ratings volume, update cadence and ads 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
geotimescale 2 is free to download; Mancos costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Mancos holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 13 and 10 respectively. Written reviews point the same way: 70% of Mancos's written reviews are positive against 67% of geotimescale 2's.
Mancos ships an update every 4 months, geotimescale 2 every 2 months. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.
| Parameter | Mancos | geotimescale 2 |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (13 ratings) — better | 4.5 (10 ratings) |
| Positive reviews | 70.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 13 — better | 10 |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 8.4 — better |
| Further details — not scored | ||
| Size | 10 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Hunt Mountain Software | DK Tasa, Inc. |
Customer experience
Mancos
geotimescale 2
In-app purchases
Mancos
No in-app purchases
geotimescale 2
No in-app purchases








