# ICS vs GST[AR]

The clearest difference is review sentiment: GST[AR] at 100% against ICS's 50%. GST[AR] also leads on rating (5.0 vs 4.3). ICS's advantage is update cadence (every 2 months vs every 4 months) and ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

GST[AR] holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 50% of ICS's written reviews are positive against 100% of GST[AR]'s.

ICS ships an update every 2 months, GST[AR] every 4 months. The most recent releases landed on October 21, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | ICS | GST[AR] |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (3 ratings)](https://appshunter.io/ios/app/ics-timescale/id1469322356/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gstar/id1519232314/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 20 MB | 2 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [隽轩 樊](https://appshunter.io/developer/1463394496) | [GiGa infosystems GmbH](https://appshunter.io/developer/1519232496) |

## What reviewers say

### ICS

[App page](https://appshunter.io/ios/app/ics-timescale/id1469322356)

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:** macOS Compatibility

**In-app purchases:** none


### GST[AR]

[App page](https://appshunter.io/ios/app/gstar/id1519232314)

Explore and visualize geological models in augmented reality. Browse a selection of models, place them on any surface, and interact with them by rotating, scaling, and highlighting features. Share your AR sessions with others for collaborative exploration.

**Highlights:** Browse geological models, View models in AR, Rotate and scale models, Highlight model features, Share AR sessions, Customize AR settings, Add custom model sources

**In-app purchases:** none


## Frequently asked questions

### Is ICS free?

ICS is free to download, with no in-app purchases.

### Is GST[AR] free?

GST[AR] is free to download, with no in-app purchases.

### Which has better reviews, ICS or GST[AR]?

GST[AR] is rated higher. ICS averages 4.3 out of 5 from 3 ratings, while GST[AR] averages 5.0 from 1 ratings.

### Do ICS or GST[AR] have ads?

Neither ICS nor GST[AR] shows ads.

### Which is updated more often, ICS or GST[AR]?

ICS ships an update every 2 months, and GST[AR] every 4 months. Most recently, ICS was updated on October 21, 2026 and GST[AR] on October 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*