# AIM SA vs PhosphorHertz

The clearest difference is price: AIM SA at Free against PhosphorHertz's $0.99. AIM SA also leads on iOS requirement (18.0 vs 26.2). PhosphorHertz's advantage is in-app purchases (none vs 2) and update cadence (every 4 months vs every 10 months). On ads and device support there is nothing between them.

AIM SA is free to download; PhosphorHertz costs $0.99 up front. AIM SA sells 2 in-app purchases, starting at $3.99 per month. PhosphorHertz asks for nothing beyond the download.

AIM SA ships an update every 10 months, PhosphorHertz every 4 months. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | AIM SA | PhosphorHertz |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 4 months** |
| Size | 1 MB | 5 MB |
| Requires iOS | **18.0** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eric Foster](https://appshunter.io/developer/1790865693) | [Stuart Woolley](https://appshunter.io/developer/315697638) |

## What reviewers say

### AIM SA

[App page](https://appshunter.io/ios/app/aim-sa/id6740630368)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Monthly | $3.99 | per month |
| Standard Annual | $29.99 | per year |


### PhosphorHertz

[App page](https://appshunter.io/ios/app/phosphorhertz/id6759729656)

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

**In-app purchases:** none


## Frequently asked questions

### Is AIM SA free?

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

### Is PhosphorHertz free?

PhosphorHertz costs $0.99, with no in-app purchases.

### Do AIM SA or PhosphorHertz have ads?

Neither AIM SA nor PhosphorHertz shows ads.

### Which is updated more often, AIM SA or PhosphorHertz?

AIM SA ships an update every 10 months, and PhosphorHertz every 4 months. Most recently, AIM SA was updated on October 18, 2026 and PhosphorHertz on October 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.*