# AquariumNotes vs Algae Scanner for Aquariums

The clearest difference is ads: Algae Scanner for Aquariums at none against AquariumNotes's shown. Algae Scanner for Aquariums also leads on update cadence (every 9 days vs monthly) and iOS requirement (15.1 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. AquariumNotes sells 3 in-app purchases, starting at $2.99 per month and Algae Scanner for Aquariums sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

AquariumNotes ships an update monthly, Algae Scanner for Aquariums every 9 days. The most recent releases landed on October 9, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | AquariumNotes | Algae Scanner for Aquariums |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 9 days** |
| Size | 7 MB | 39 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yusuke Morimoto](https://appshunter.io/developer/1702989537) | [Szymon Niemiec](https://appshunter.io/developer/1853026562) |

## What reviewers say

### AquariumNotes

[App page](https://appshunter.io/ios/app/aquariumnotes/id6480376453)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PremiumMember/1Month | $2.99 | per month |
| PremiumMember/6Month | $9.99 | per 6 months |
| PremiumMember/1Year | $19.99 | per year |


### Algae Scanner for Aquariums

[App page](https://appshunter.io/ios/app/algae-scanner-for-aquariums/id6761097229)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | per 7 days |
| Premium | $29.99 | per year |


## Frequently asked questions

### Is AquariumNotes free?

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

### Is Algae Scanner for Aquariums free?

Algae Scanner for Aquariums is free to download, with in-app purchases available.

### Do AquariumNotes or Algae Scanner for Aquariums have ads?

AquariumNotes shows ads; Algae Scanner for Aquariums does not.

### Which is updated more often, AquariumNotes or Algae Scanner for Aquariums?

AquariumNotes ships an update monthly, and Algae Scanner for Aquariums every 9 days. Most recently, AquariumNotes was updated on October 9, 2026 and Algae Scanner for Aquariums on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*