Comparison

geotimescale 2 vs ICS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

ICS

Access authoritative geological time scale data and information on Global Boundary Stratotype Sections and Points (GSSPs). Explore charts, detailed GSSP information, and relevant statistics.

Highlights
  • Demonstration of ICS chart
  • Detailed GSSP information
  • GSSP statistics
  • Authoritative data service
Features
Read full description

ICS Timescale is the official APP of the International Commission on Stratigraphy (ICS). It is designed to provide authoritative data service of ICS. The main functions include: 1) Demonstration of the ICS chart. 2) Detail information about each GSSP. 3) Statistics of the GSSPs.

Screenshots

geotimescale 23 screens

Verdict

The call

geotimescale 2 and ICS both sit at 4.5 stars, but that hides the real split: 67% of geotimescale 2's written reviews are positive against 50% of ICS's. geotimescale 2 also leads on ratings volume (10 vs 3). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

geotimescale 2 holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 10 and 3 respectively. Written reviews point the same way: 67% of geotimescale 2's written reviews are positive against 50% of ICS's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 7, 2026 and October 21, 2026 respectively.

Scorecard2 real differences · 8 level
geotimescale 2 versus ICS: the parameters behind the verdict, then further details
Parametergeotimescale 2ICS
PriceFreeFree
Rating4.5 (10 ratings) — better4.3 (3 ratings)
Positive reviews66.7% of reviews — better50.0% of reviews
Number of ratings10 — better3
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.4 — better9.0
Further details — not scored
Size8 MB20 MB
Age rating4+4+
DeveloperDK Tasa, Inc.隽轩 樊

Customer experience

geotimescale 2

All ratings10 ratings
Positive90.0%
Neutral0.0%
Negative10.0%
Written reviews6 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

ICS

All ratings3 ratings
Positive66.7%
Neutral33.3%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

In-app purchases

None

geotimescale 2

No in-app purchases

None

ICS

No in-app purchases

Questions

Is geotimescale 2 free?
geotimescale 2 is free to download, with no in-app purchases.
Is ICS free?
ICS is free to download, with no in-app purchases.
Which has better reviews, geotimescale 2 or ICS?
geotimescale 2 is rated higher. geotimescale 2 averages 4.5 out of 5 from 10 ratings, while ICS averages 4.3 from 3 ratings.
Do geotimescale 2 or ICS have ads?
Neither geotimescale 2 nor ICS shows ads.
Which is updated more often, geotimescale 2 or ICS?
geotimescale 2 ships an update every 2 months, and ICS every 2 months. Most recently, geotimescale 2 was updated on October 7, 2026 and ICS on October 21, 2026.

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