# ECOPTO vs AquariumNotes

The clearest difference is in-app purchases: ECOPTO at none against AquariumNotes's 3. ECOPTO also leads on ads (none vs shown) and iOS requirement (9.0 vs 17.0). AquariumNotes's advantage is update cadence (monthly vs every 2 months). On price 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. ECOPTO asks for nothing beyond the download.

ECOPTO ships an update every 2 months, AquariumNotes monthly. The most recent releases landed on October 17, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | ECOPTO | AquariumNotes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Size | 94 MB | 7 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eco-lamps Ltd](https://appshunter.io/developer/1080191960) | [Yusuke Morimoto](https://appshunter.io/developer/1702989537) |

## What reviewers say

### ECOPTO

[App page](https://appshunter.io/ios/app/ecopto-sp/id1229783063)

**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 ECOPTO free?

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

### Is AquariumNotes free?

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

### Do ECOPTO or AquariumNotes have ads?

AquariumNotes shows ads; ECOPTO does not.

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

ECOPTO ships an update every 2 months, and AquariumNotes monthly. Most recently, ECOPTO was updated on October 17, 2026 and AquariumNotes on October 9, 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.*