# PAS vs AquaMetr

The clearest difference is update cadence: AquaMetr at monthly against PAS's every 3 months. PAS's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.6). On price, 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.

PAS ships an update every 3 months, AquaMetr monthly. The most recent releases landed on September 13, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | PAS | AquaMetr |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | — |
| Size | 9 MB | 25 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [USHIO INC.](https://appshunter.io/developer/1044515354) | [SILICON CRAFT TECHNOLOGY PUBLIC COMPANY LIMITED](https://appshunter.io/developer/1279674870) |

## What reviewers say

### PAS

[App page](https://appshunter.io/ios/app/pas-110/id1044515355)

This utility app allows users to operate the PAS-110 product. It leverages advanced Silicone Optical Technology for high sensitivity and compact design, enabling direct measurements in PCR tubes to prevent sample contamination.

**Highlights:** Operates PAS-110 products, High sensitivity compact design, Silicone Optical Technology (SOT), Direct PCR tube measurements, Prevents sample contamination

**Features:** macOS Compatibility

**In-app purchases:** none


### AquaMetr

[App page](https://appshunter.io/ios/app/aquametr/id6741795863)

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

**In-app purchases:** none


## Frequently asked questions

### Is PAS free?

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

### Is AquaMetr free?

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

### Do PAS or AquaMetr have ads?

Neither PAS nor AquaMetr shows ads.

### Which is updated more often, PAS or AquaMetr?

PAS ships an update every 3 months, and AquaMetr monthly. Most recently, PAS was updated on September 13, 2026 and AquaMetr on September 19, 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.*