# Groundwater vs Altitude

The clearest difference is in-app purchases: Groundwater at none against Altitude's 2. Groundwater also leads on iOS requirement (7.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Altitude sells 2 one-off in-app purchases. Groundwater asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Groundwater | Altitude |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/groundwater/id541058402/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 11 MB | 12 MB |
| Requires iOS | **7.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sweco](https://appshunter.io/developer/356354926) | [文智 洪](https://appshunter.io/developer/775738991) |

## What reviewers say

### Groundwater

[App page](https://appshunter.io/ios/app/groundwater/id541058402)

This reference app provides basic hydrogeological methods to assist engineers and environmental experts in their work. It is developed by Sweco, a global consulting engineering firm focused on sustainable societal development.

**Highlights:** Basic hydrogeological methods, Reference tool for engineers, Environmental expert assistance, Sustainable society focus

**Features:** macOS Compatibility

**In-app purchases:** none


### Altitude

[App page](https://appshunter.io/ios/app/altitude-meter/id6776539825)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Permanently remove ads | $0.99 | one-time |
| Altimeter PRO | $2.99 | one-time |


## Frequently asked questions

### Is Groundwater free?

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

### Is Altitude free?

Altitude is free to download, with in-app purchases available.

### Do Groundwater or Altitude have ads?

Neither Groundwater nor Altitude shows ads.

### Which is updated more often, Groundwater or Altitude?

Groundwater ships an update every 2 months, and Altitude every 2 months. Most recently, Groundwater was updated on October 20, 2026 and Altitude on October 24, 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.*