# Aquarium Notepad vs Spock

The clearest difference is update cadence: Aquarium Notepad at every 3 days against Spock's monthly. Aquarium Notepad also leads on iOS requirement (12 vs 26.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Aquarium Notepad ships an update every 3 days, Spock monthly. The most recent releases landed on October 22, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Aquarium Notepad | Spock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/aquarium-notepad/id6749213015/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Monthly |
| Monetization | Free | — |
| Size | 35 MB | 5 MB |
| Requires iOS | **12** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Quantum Technologies Limited Liability Company](https://appshunter.io/developer/1588354820) | [TTL Technologies (Pty) Ltd](https://appshunter.io/developer/6779539970) |

## What reviewers say

### Aquarium Notepad

[App page](https://appshunter.io/ios/app/aquarium-notepad/id6749213015)

Manage your aquariums with detailed tracking of water parameters, maintenance schedules, and measurements. This app offers comprehensive tools for serious aquarists to maintain optimal conditions and keep thorough records of their aquatic environments.

**Highlights:** Water parameter tracking, Maintenance task scheduling, Measurement logging, Multiple aquarium support, Data import/export, Charts and analytics

**Features:** macOS Compatibility

**In-app purchases:** none


### Spock

[App page](https://appshunter.io/ios/app/spock-ai-workspace/id6779539968)

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

**In-app purchases:** none


## Frequently asked questions

### Is Aquarium Notepad free?

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

### Is Spock free?

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

### Do Aquarium Notepad or Spock have ads?

Neither Aquarium Notepad nor Spock shows ads.

### Which is updated more often, Aquarium Notepad or Spock?

Aquarium Notepad ships an update every 3 days, and Spock monthly. Most recently, Aquarium Notepad was updated on October 22, 2026 and Spock 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.*