# Acidity vs Unite Center

The clearest difference is ads: Acidity at none against Unite Center's shown. Unite Center's advantage is update cadence (monthly vs every 4 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.

Acidity ships an update every 4 months, Unite Center monthly. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Acidity | Unite Center |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (10 ratings)](https://appshunter.io/ios/app/acidity-view-page-archives/id6472630023/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | — |
| Size | 8 MB | 84 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Octalwise](https://appshunter.io/developer/1717359953) | [yang jongbin](https://appshunter.io/developer/1580401827) |

## What reviewers say

### Acidity

[App page](https://appshunter.io/ios/app/acidity-view-page-archives/id6472630023)

This utility extension for Safari provides quick access to archived versions of web pages. It allows users to manually navigate to archives or set up automatic redirection based on custom regex patterns.

**Highlights:** Access archived page versions, Toolbar action for quick access, Regex matching for automatic navigation, Safari extension

**Features:** Safari Extension, Vision Pro support

**In-app purchases:** none


### Unite Center

[App page](https://appshunter.io/ios/app/unite-center/id6766610037)

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

**In-app purchases:** none


## Frequently asked questions

### Is Acidity free?

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

### Is Unite Center free?

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

### Do Acidity or Unite Center have ads?

Unite Center shows ads; Acidity does not.

### Which is updated more often, Acidity or Unite Center?

Acidity ships an update every 4 months, and Unite Center monthly. Most recently, Acidity was updated on November 4, 2026 and Unite Center on November 5, 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.*