Comparison

Pocket Marine vs Mobius

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Pocket Marine

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
Read full description

A handy tool to keep track of all of the vital information related to your aquarium together with an in-depth library of species to ensure you never get caught short for an impulse buy. Main features - • An encyclopaedia of over 800 species of marine fish, invertebrates and coral • Testing journal to keep track of over 30 of the most vital parameters • Trends to plot graphs and visualise how stable each parameter is over time • Inhabitants diary to keep track of your latest additions including information such as how long you've had it, was it feeding in store beforehand, where was it purchased from and much more. • Dosing log top keep track of any chemical additions to your tanks to help keep up to date on doses and keep stability where it should be • Reminders with device notifications so you never miss an important event • Water change journal to keep a detailed log such as when, how much, salinity etc. of your water changes performed • Maintenance log to remind you of your last maintenance actions completed per tank • Compatibility of species - A simple, brief run down of what species are typically safe, tolerant or not safe to be housed with others • A simple set of useful calculators such as alkalinity conversions, Celsius to Fahrenheit or gallons to litres and more. Keeping track of our aquariums can ultimately be one of the most important parts to the 'reef keeping' hobby. Maintaining husbandry tasks, testing, stability, water changes, inhabitant stats etc. are all vital to keeping successful aquariums. Pocket Marine was designed to make inputting, storing and keeping all information with you at ease. Often, any issues that we have with our aquariums can be linked to actions that were performed a short time beforehand. For this reason, a log of changes made, actions performed or additions can be vital when trying to decipher a problem that may be in play. Pen and paper has always been a great way to keep this information at hand but, Pocket Marine offers a place to store this somewhere that, this day and age, is with us at all times. Not just for tracking events. Pocket Marine is a great way to help you log your inhabitants into specific tanks, record your latest water change for your mixed reef tank or simply log your latest maintenance action performed on the fish only office tank. Recording your information couldnt be easier and keeping it on your mobile device saves on that frantic search incase of needing the information at a later date. Help with that last second impulse buy at the store. With an in depth library of over 800 species of fish, invertebrates and coral and being added to daily, you will always have the information on hand that you need to make that informed decision on a purchase. We hope you enjoy using the app and that we can help with your success in the hobby and welcome any feature requests you may have. Happy Reefing!

About

Mobius

This app provides intelligent control for aquarium equipment, simplifying management of multiple tanks. Create custom scenes, schedules, and access quick status updates to maintain your aquatic environment with ease.

Highlights
  • Manage multiple tanks
  • Create custom scenes
  • Drag-and-drop scheduling
  • Lighting control with templates
  • Flow control for pumps
  • Dosing automation and tracking
Features
Read full description

Mobius® is an innovative control platform for your EcoTech Marine products. A core rethinking of how products connect and function make Mobius one of the simplest and smartest control apps you'll ever use. Manage multiple tanks and get quick status updates from dashboard widgets. Easily create Scenes that are accessible to run from the dashboard. Scenes make repetitive tasks as simple as tapping a button. Creating schedules is a snap with Mobius's drag and drop interface. DASHBOARD - Run and create custom scenes using your equipment to make repetitive tasks easy. - Configure and organize your widgets so you can stay current with what is happening in your tank. - Quick access to your devices. LIGHTING - The lighting control interface makes creating a schedule easier than ever. - Proven templates make sure your tank gets off to a great start! - Use our coral acclimation mode to welcome your new livestock. - Save & share your customized templates. FLOW - Use our easy schedule editing interface to customize your Vectra & VorTech schedule. - Utilize all of our great pump modes like ReefCrest, Lagoon and Tidal Swell. - Initiate Feed mode to reduce the aquarium flow for spot-feeding. - Easily calibrate your Vectra with our simple walkthrough. DOSING - Auto Mode: Tell us the additive you're dosing and how much, we'll take care of when based on proven best practices. - Manual Mode: You're in control. Specify dosage and duration or rate. - Continuous Mode: Set a dosing rate, and your Versa will dose as long as it has power. - Easy Calibration - Keep track of how much additive is left in the containers, so you don't run out. - Need a one-time dose? Use Instant Dose to dose your tank quickly.

Screenshots

Pocket Marine4 screens
Mobius4 screens

Verdict

The call

The clearest difference is review sentiment: Pocket Marine at 79% against Mobius's 27%. Pocket Marine also leads on rating (4.8 vs 2.0) and update cadence (fortnightly vs every 2 months). Mobius's advantage is price (Free vs $3.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

Pocket Marine holds the better App Store score, 4.8 against 2.0. Both are backed by a comparable volume of ratings — 597 and 331 respectively. Written reviews point the same way: 79% of Pocket Marine's written reviews are positive against 27% of Mobius's.

UpkeepUpdate frequency

Pocket Marine ships an update fortnightly, Mobius every 2 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard4 real differences · 6 level
Pocket Marine versus Mobius: the parameters behind the verdict, then further details
ParameterPocket MarineMobius
Price$3.99Free — better
Rating4.8 (597 ratings) — better2.0 (331 ratings)
Positive reviews78.8% of reviews — better27.5% of reviews
Number of ratings597 — better331
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.6
Further details — not scored
Size213 MB95 MB
Age rating4+4+
DeveloperLiam SalmonsC2 Development, LLC

Customer experience

Pocket Marine

All ratings596 ratings
Positive94.6%
Neutral3.0%
Negative2.3%
Written reviews99 reviews
Positive78.8%
Neutral9.1%
Negative12.1%

Mobius

All ratings328 ratings
Positive22.9%
Neutral3.4%
Negative73.8%
Written reviews171 reviews
Positive27.5%
Neutral3.5%
Negative69.0%

User reviews

Pocket Marine

From 597 App Store ratings

What we love

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

Room to improve

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

Mobius

From 331 App Store ratings

What we love

  • 🚀 Easy to use
  • 🚀 Intuitive interface
  • 👍 Controllability of devices
  • 👍 Potential for future improvements

Room to improve

  • 🐛 Connectivity issues
  • 🐛 Time/date sync problems
  • 🐛 Unreliable performance
  • 🐛 Buggy and glitchy
  • 🐛 Difficult to navigate

Bugs and requests

Pocket Marine

Reported bugs

4 issues
  • 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

9 requests
  • 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
Show 4 more
  • Export data to Excel
  • Ability to move livestock up/down in list
  • Add more fish and coral species to database
  • Dosing calculator

Mobius

Reported bugs

5 issues
  • Constant disconnections
  • Inability to add/connect devices
  • Lighting schedule not working as expected
  • Time/date resets randomly
  • Crashes and freezes

Requested features

6 requests
  • Remote access and control
  • Improved lighting schedule customization
  • Pump/device off option
  • Sync settings across devices
  • Better documentation and tutorials
Show 1 more
  • Wi-Fi connectivity

In-app purchases

None

Pocket Marine

No in-app purchases

None

Mobius

No in-app purchases

Questions

Is Pocket Marine free?
Pocket Marine costs $3.99, with no in-app purchases.
Is Mobius free?
Mobius is free to download, with no in-app purchases.
Which has better reviews, Pocket Marine or Mobius?
Pocket Marine is rated higher. Pocket Marine averages 4.8 out of 5 from 597 ratings, while Mobius averages 2.0 from 331 ratings.
Do Pocket Marine or Mobius have ads?
Neither Pocket Marine nor Mobius shows ads.
Which is updated more often, Pocket Marine or Mobius?
Pocket Marine ships an update fortnightly, and Mobius every 2 months. Most recently, Pocket Marine was updated on October 24, 2026 and Mobius on October 21, 2026.

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