# Pocket Marine vs VSON

The clearest difference is review sentiment: Pocket Marine at 79% against VSON's 0%. Pocket Marine also leads on rating (4.8 vs 1.0) and ratings volume (596 vs 2). VSON's advantage is price (Free vs $3.99) and iOS requirement (12.0 vs 14.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

VSON is free to download; Pocket Marine costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Pocket Marine holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Pocket Marine has 596 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 79% of Pocket Marine's written reviews are positive against 0% of VSON's.

Pocket Marine ships an update fortnightly, VSON every 6 weeks. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Pocket Marine | VSON |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.8 (596 ratings)](https://appshunter.io/ios/app/pocket-marine/id999538938/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/vson/id1552169767/reviews) |
| Number of ratings | **596** | 2 |
| Positive reviews | **78.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 213 MB | 31 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Liam Salmons](https://appshunter.io/developer/999538937) | [Vson Technology Co., Ltd](https://appshunter.io/developer/938010223) |

## What reviewers say

### Pocket Marine

[App page](https://appshunter.io/ios/app/pocket-marine/id999538938)

Manage all your aquarium data in one place. Track water parameters, inhabitants, dosing, and maintenance with detailed logs and reminders. Access an extensive library of marine species to make informed decisions about new additions.

**Highlights:** Marine species encyclopedia (800+), Water parameter testing journal, Inhabitant and dosing logs, Maintenance and water change journals, Species compatibility guide, Useful calculators, Customizable reminders

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

**In-app purchases:** none

**What reviewers like**

- 👍 Helpful for tracking parameters
- 🚀 Fantastic data base
- 👍 Well designed app
- 👍 Comprehensive features
- 👍 Useful for new marine aquarium keepers

**What reviewers complain about**

- 🐛 Crashes when trying to set up aquarium
- 🐛 Deletes test results
- 🐛 Buggy and unstable
- 🐛 Spelling mistakes
- 🐛 Unable to change default parameters

**Reported bugs**

- Crashes when trying to edit targets/ranges
- Endless scroll to select values
- Inconsistent behavior when switching between Celsius and Fahrenheit
- Crashes when accessing certain sections like soft corals

**Requested features**

- Ability to sync data across devices
- Customizable home screen
- Tracking for spending on tank supplies
- Ability to set default parameters
- Graphs showing multiple parameters together


### VSON

[App page](https://appshunter.io/ios/app/vson/id1552169767)

This app connects your mobile device to smart home hardware for convenient management and monitoring. It allows for fast interaction with smart devices and provides real-time insights into your home environment.

**Highlights:** Smart hardware management, Mobile phone and smart device interaction, Interconnection between smart devices, Real-time device monitoring, Home environment monitoring

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

**In-app purchases:** none


## Frequently asked questions

### Is Pocket Marine free?

Pocket Marine costs $3.99, with no in-app purchases.

### Is VSON free?

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

### Which has better reviews, Pocket Marine or VSON?

Pocket Marine is rated higher. Pocket Marine averages 4.8 out of 5 from 596 ratings, while VSON averages 1.0 from 2 ratings.

### Do Pocket Marine or VSON have ads?

Neither Pocket Marine nor VSON shows ads.

### Which is updated more often, Pocket Marine or VSON?

Pocket Marine ships an update fortnightly, and VSON every 6 weeks. Most recently, Pocket Marine was updated on November 11, 2026 and VSON on November 3, 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.*