# アクアリウムノート vs ShrimpNote

The clearest difference is ads: ShrimpNote at none against アクアリウムノート's shown. ShrimpNote also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. アクアリウムノート sells 2 in-app purchases, starting at $0.99 per month and ShrimpNote sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

アクアリウムノート ships an update every 2 weeks, ShrimpNote fortnightly. Both last shipped on October 28, 2026.

## The numbers

| Metric | アクアリウムノート | ShrimpNote |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 64 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [towa imamoto](https://appshunter.io/developer/1869206632) | [kazuki korenori](https://appshunter.io/developer/1884835388) |

## What reviewers say

### アクアリウムノート

[App page](https://appshunter.io/ios/app/id6758006953)

Easily record daily aquarium activities, including water changes, water quality, and livestock growth. Get reminders for essential tasks and track your aquarium's health with detailed logs and graphs. Premium features offer unlimited entries and home screen widgets.

**Highlights:** Aquarium and livestock management, Daily diary and water quality logging, Task reminders with calendar sync, Water quality graphs, Home screen widgets (premium), Unlimited entries (premium)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $0.99 | per month |
| プレミアムプラン（買い切り） | $9.99 | one-time |


### ShrimpNote

[App page](https://appshunter.io/ios/app/shrimpnote/id6787893661)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShrimpNote Pro | $6.99 | one-time |


## Frequently asked questions

### Is アクアリウムノート free?

アクアリウムノート is free to download, with in-app purchases available.

### Is ShrimpNote free?

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

### Do アクアリウムノート or ShrimpNote have ads?

アクアリウムノート shows ads; ShrimpNote does not.

### Which is updated more often, アクアリウムノート or ShrimpNote?

アクアリウムノート ships an update every 2 weeks, and ShrimpNote fortnightly. Most recently, アクアリウムノート was updated on October 28, 2026 and ShrimpNote on October 28, 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.*