# Geology vs LastDrop

The clearest difference is ads: LastDrop at none against Geology's shown. LastDrop also leads on update cadence (every 3 months vs every 26 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Geology ships an update every 26 months, LastDrop every 3 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Geology | LastDrop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 26 months | **Every 3 months** |
| Size | 26 MB | 47 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mehmet Bayram](https://appshunter.io/developer/1541281376) | [Alper Emin Yardimci](https://appshunter.io/developer/1874396613) |

## What reviewers say

### Geology

[App page](https://appshunter.io/ios/app/geology/id6446095705)

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

**In-app purchases:** none


### LastDrop

[App page](https://appshunter.io/ios/app/lastdrop-water-tracker/id6762549048)

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

**In-app purchases:** none


## Frequently asked questions

### Is Geology free?

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

### Is LastDrop free?

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

### Do Geology or LastDrop have ads?

Geology shows ads; LastDrop does not.

### Which is updated more often, Geology or LastDrop?

Geology ships an update every 26 months, and LastDrop every 3 months. Most recently, Geology was updated on October 30, 2026 and LastDrop on October 28, 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.*