# Groundwater App vs Train4Science

The clearest difference is device support: Train4Science at 3 against Groundwater App's 1. Groundwater App's advantage is iOS requirement (6.0 vs 12.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Groundwater App ships an update every 6 months, Train4Science every 5 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Groundwater App | Train4Science |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/groundwater-app/id1036868330/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | Free | — |
| Size | 63 MB | 146 MB |
| Requires iOS | **6.0** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Koboldgames GmbH](https://appshunter.io/developer/933187097) | [Playersjourney GmbH](https://appshunter.io/developer/1461683218) |

## What reviewers say

### Groundwater App

[App page](https://appshunter.io/ios/app/groundwater-app/id1036868330)

Explore the origins, uses, and river connections of groundwater through three engaging chapters. Conduct experiments in a virtual lab to deepen your understanding of groundwater behavior.

**Highlights:** Three learning chapters, Groundwater origins explained, Groundwater uses detailed, Link between groundwater and rivers, Virtual groundwater lab, Interactive experiments

**Features:** macOS Compatibility

**In-app purchases:** none


### Train4Science

[App page](https://appshunter.io/ios/app/train4science/id6462454803)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Groundwater App free?

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

### Is Train4Science free?

Train4Science is free to download, with no in-app purchases.

### Do Groundwater App or Train4Science have ads?

Neither Groundwater App nor Train4Science shows ads.

### Which is updated more often, Groundwater App or Train4Science?

Groundwater App ships an update every 6 months, and Train4Science every 5 months. Most recently, Groundwater App was updated on November 2, 2026 and Train4Science on November 3, 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.*