Comparison

ReefDoser vs Pocket Marine

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

Head to head
About

ReefDoser

This app helps tropical marine aquarium owners calculate precise dosages for essential elements like Calcium, Magnesium, and Alkalinity. It features an extensive database of over 70 products to ensure optimal water parameters for your reef tank.

Highlights
  • Element dosage calculation
  • Calcium, Magnesium, Alkalinity tracking
  • Potassium, Iodine, Strontium, Boron, Silicate
  • Product database (70+ items)
  • Tropical marine aquarium focus
Features
Read full description

Reef Calculator for tropical marine aquariums, to help calculate the correct dosages of specific elements needed to maintain recommended levels. Current elements are Calcium, Magnesium, Alkalinity, Potassium, Iodine, Strontium, Boron & Silicate. Choose products from over 70 items in our updated database

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!

Screenshots

ReefDoser4 screens
Pocket Marine4 screens

Verdict

The call

The clearest difference is price: ReefDoser at Free against Pocket Marine's $3.99. ReefDoser also leads on iOS requirement (10.0 vs 14.0). Pocket Marine's advantage is rating (4.8 vs 1.0) and update cadence (fortnightly vs every 3 months). On ads, in-app purchases, monetization model and device support 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

ReefDoser 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 1.0. 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. Written reviews point the same way: 54% of ReefDoser's written reviews are positive against 79% of Pocket Marine's.

UpkeepUpdate frequency

ReefDoser ships an update every 3 months, Pocket Marine fortnightly. Both last shipped on November 1, 2026.

Scorecard6 real differences · 4 level
ReefDoser versus Pocket Marine: the parameters behind the verdict, then further details
ParameterReefDoserPocket Marine
PriceFree — better$3.99
Rating1.0 (1 ratings)4.8 (597 ratings) — better
Positive reviews54.2% of reviews78.8% of reviews — better
Number of ratings1597 — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.0 — better14.0
Further details — not scored
Size23 MB213 MB
Age rating4+4+
DeveloperPixelwand LtdLiam Salmons

Customer experience

ReefDoser

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews24 reviews
Positive54.2%
Neutral20.8%
Negative25.0%

Pocket Marine

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

Bugs and requests

ReefDoser

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

ReefDoser

No in-app purchases

None

Pocket Marine

No in-app purchases

Questions

Is ReefDoser free?
ReefDoser is free to download, with no in-app purchases.
Is Pocket Marine free?
Pocket Marine costs $3.99, with no in-app purchases.
Which has better reviews, ReefDoser or Pocket Marine?
Pocket Marine is rated higher. ReefDoser averages 1.0 out of 5 from 1 ratings, while Pocket Marine averages 4.8 from 597 ratings.
Do ReefDoser or Pocket Marine have ads?
Neither ReefDoser nor Pocket Marine shows ads.
Which is updated more often, ReefDoser or Pocket Marine?
ReefDoser ships an update every 3 months, and Pocket Marine fortnightly. Most recently, ReefDoser was updated on November 1, 2026 and Pocket Marine on November 1, 2026.

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