# Aqua_Smart vs AquariumNotes

The clearest difference is price: AquariumNotes at Free against Aqua_Smart's $2.99. AquariumNotes also leads on update cadence (monthly vs every 2 months). Aqua_Smart's advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support there is nothing between them.

AquariumNotes is free to download; Aqua_Smart costs $2.99 up front. AquariumNotes sells 3 in-app purchases, starting at $2.99 per month. Aqua_Smart asks for nothing beyond the download.

Aqua_Smart ships an update every 2 months, AquariumNotes monthly. The most recent releases landed on May 16, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Aqua_Smart | AquariumNotes |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Size | 38 MB | 7 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kazunori ueda](https://appshunter.io/developer/1415280956) | [Yusuke Morimoto](https://appshunter.io/developer/1702989537) |

## What reviewers say

### Aqua_Smart

[App page](https://appshunter.io/ios/app/aqua-smart/id1503941316)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Aqua_Smart free?

Aqua_Smart costs $2.99, with no in-app purchases.

### Is AquariumNotes free?

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

### Do Aqua_Smart or AquariumNotes have ads?

AquariumNotes shows ads; Aqua_Smart does not.

### Which is updated more often, Aqua_Smart or AquariumNotes?

Aqua_Smart ships an update every 2 months, and AquariumNotes monthly. Most recently, Aqua_Smart was updated on May 16, 2026 and AquariumNotes on September 23, 2026.

---

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