# Pocket Marine vs Precision Dosing

The clearest difference is price: Precision Dosing at Free against Pocket Marine's $3.99. Precision Dosing also leads on rating (5.0 vs 4.8). Pocket Marine's advantage is update cadence (fortnightly vs every 44 months) and ratings volume (597 vs 1). On ads, in-app purchases and monetization model there is nothing between them.

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

Precision Dosing holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Pocket Marine has 597 ratings behind it against 1, so its average is the more settled of the two.

Pocket Marine ships an update fortnightly, Precision Dosing every 44 months. The most recent releases landed on October 29, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Pocket Marine | Precision Dosing |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [4.8 (597 ratings)](https://appshunter.io/ios/app/pocket-marine/id999538938/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/precision-dosing/id1587344204/reviews)** |
| Number of ratings | **597** | 1 |
| Positive reviews | 78.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 44 months |
| Monetization | Free | Free |
| Size | 213 MB | 5 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Liam Salmons](https://appshunter.io/developer/999538937) | [华 李](https://appshunter.io/developer/1051208751) |

## 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


### Precision Dosing

[App page](https://appshunter.io/ios/app/precision-dosing/id1587344204)

Automate nutrient delivery for equipment with precise control. This application simplifies the process of adding nutrients, significantly reducing feeding complexity.

**Highlights:** Precision dosing control, Automated nutrient addition, Equipment integration, Reduced feeding difficulty, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pocket Marine free?

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

### Is Precision Dosing free?

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

### Which has better reviews, Pocket Marine or Precision Dosing?

Precision Dosing is rated higher. Pocket Marine averages 4.8 out of 5 from 597 ratings, while Precision Dosing averages 5.0 from 1 ratings.

### Do Pocket Marine or Precision Dosing have ads?

Neither Pocket Marine nor Precision Dosing shows ads.

### Which is updated more often, Pocket Marine or Precision Dosing?

Pocket Marine ships an update fortnightly, and Precision Dosing every 44 months. Most recently, Pocket Marine was updated on October 29, 2026 and Precision Dosing on October 17, 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.*