Comparison

Reefminder Fish Log vs Aquarium Notepad

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

Head to head
About

Reefminder Fish Log

Easily manage your saltwater aquarium with this intuitive log and inventory app. Track livestock, water changes, equipment, and observations with a timeline-based interface. Ideal for reef keepers who want to document their tank's history.

Highlights
  • Aquarium log and inventory management
  • Reef keeping tools
  • Tank maintenance reminders
  • Timeline-based interface
  • Log livestock, water changes, equipment
  • Record observations
Read full description

Reefminder is the ultimate, easy-to-use aquarium log and inventory management app for your saltwater aquarium. It also provides tools specific to reef keeping, and great for reminders to check your tank. Get it? Reefminder? In the saltwater fish and reef keeping hobby, we invest a lot of time and effort into maintaining our tanks. We all know to keep our eye on things like water quality, chemistry, livestock behavior, equipment performance, and so on. However, we tend to only record these numbers when things go wrong. That’s why experts in the hobby not only monitor their tanks, but they record and document their results. This is what the pros call an Aquarium Log. We have tried keeping a good ol’ fashion paper journal, but when you’re at your local store or out talking with some experts, you can never remember what you wrote down (and what a pain to remember to bring a journal with you). We have also tried some of the other apps out there, but most are over complicated, tedious, and cumbersome. So that’s why we created Reefminder. With Reefminder, you can quickly and easily log every livestock item you add, water change you perform, equipment you check, or just note any interesting observations, all with our amazing timeline based interface. Just tap the “+” button, and all the different “event” types appear as color coded icons. Once you record your event, it is displayed in a beautiful timeline. We think this timeline is the easiest way to quickly view your tanks history at a glance. Reefminder is just the first step in a suite of products to come. So we thank you in advance for being an early adopter. The more you add to your Reefminder log, the more it will benefit you when we release some other products in the future!…Wink wink!

About

Aquarium Notepad

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
Read full description

Professional aquarium management made simple. Track water parameters, maintenance tasks, and measurements for your aquarium with comprehensive tools designed for serious aquarists. Features: • Water parameter tracking and history • Maintenance task scheduling with notifications • Measurement logging and trends • Multiple aquarium support • Data import/export capabilities • Beautiful charts and analytics Perfect for both beginners and experienced aquarium enthusiasts who want to maintain optimal water conditions and keep detailed records of their aquatic environments.

Screenshots

Reefminder Fish Log4 screens
Aquarium Notepad3 screens

Verdict

The call

The clearest difference is rating: Aquarium Notepad at 4.7 against Reefminder Fish Log's 4.3. Aquarium Notepad also leads on review sentiment (100% vs 85%) and update cadence (every 3 days vs weekly). Reefminder Fish Log's advantage is ratings volume (54 vs 3). On price, 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

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

ReceptionRating · Positive reviews · Number of ratings

Aquarium Notepad holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Reefminder Fish Log has 54 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 85% of Reefminder Fish Log's written reviews are positive against 100% of Aquarium Notepad's.

UpkeepUpdate frequency

Reefminder Fish Log ships an update weekly, Aquarium Notepad every 3 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

Scorecard4 real differences · 6 level
Reefminder Fish Log versus Aquarium Notepad: the parameters behind the verdict, then further details
ParameterReefminder Fish LogAquarium Notepad
PriceFreeFree
Rating4.3 (54 ratings)4.7 (3 ratings) — better
Positive reviews85.3% of reviews100.0% of reviews — better
Number of ratings54 — better3
Update frequencyWeeklyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012 — better
Further details — not scored
Size111 MB35 MB
Age rating4+4+
DeveloperAlexander FanaianQuantum Technologies Limited Liability Company

Customer experience

Reefminder Fish Log

All ratings54 ratings
Positive81.5%
Neutral5.6%
Negative13.0%
Written reviews34 reviews
Positive85.3%
Neutral5.9%
Negative8.8%

Aquarium Notepad

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Reefminder Fish Log

No in-app purchases

None

Aquarium Notepad

No in-app purchases

Questions

Is Reefminder Fish Log free?
Reefminder Fish Log is free to download, with no in-app purchases.
Is Aquarium Notepad free?
Aquarium Notepad is free to download, with no in-app purchases.
Which has better reviews, Reefminder Fish Log or Aquarium Notepad?
Aquarium Notepad is rated higher. Reefminder Fish Log averages 4.3 out of 5 from 54 ratings, while Aquarium Notepad averages 4.7 from 3 ratings.
Do Reefminder Fish Log or Aquarium Notepad have ads?
Neither Reefminder Fish Log nor Aquarium Notepad shows ads.
Which is updated more often, Reefminder Fish Log or Aquarium Notepad?
Reefminder Fish Log ships an update weekly, and Aquarium Notepad every 3 days. Most recently, Reefminder Fish Log was updated on October 24, 2026 and Aquarium Notepad on October 22, 2026.

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