# ACQUA vs UDST Events

ACQUA and UDST Events are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

ACQUA ships an update every 6 months, UDST Events every 5 months. The most recent releases landed on September 15, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | ACQUA | UDST Events |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 months** |
| Size | 292 MB | 69 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [QatarEnergy LNG](https://appshunter.io/developer/1779091201) | [UDST](https://appshunter.io/developer/1715667473) |

## What reviewers say

### ACQUA

[App page](https://appshunter.io/ios/app/acqua/id6738052809)

**In-app purchases:** none


### UDST Events

[App page](https://appshunter.io/ios/app/udst-events/id6740847092)

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

**In-app purchases:** none


## Frequently asked questions

### Is ACQUA free?

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

### Is UDST Events free?

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

### Do ACQUA or UDST Events have ads?

Neither ACQUA nor UDST Events shows ads.

### Which is updated more often, ACQUA or UDST Events?

ACQUA ships an update every 6 months, and UDST Events every 5 months. Most recently, ACQUA was updated on September 15, 2026 and UDST Events on August 14, 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.*