Comparison

Aquarist's Notes vs Acuario Manager

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

Head to head
About

Aquarist's Notes

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Aquarium health monitoring app. The Aquarist's Notes allows you to record important water parameters such as temperature, pH, hardness and other factors that affect fish and plant health, add notes and keep a diary. You can add photos from the system photo album directly to the app and add comments or save documents such as aquarium inventory guides. All of this information will be easily accessible and organized right in the app. The Aquarist's Notes will make calculations related to water treatment easier. The app provides accurate calculations of the amount of additives and chemicals you need for proper water treatment in aquariums. Calculators are available for calculating water volume depending on tank dimensions and amount of decorations, for unit conversions and more. Reminders and a calendar will simplify your aquarium maintenance planning and you'll never forget anything important again. Thanks to iCloud, all information can be available on all your devices. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://aquariumnote.lvslo.eu/app-privacy.html

About

Acuario Manager

Features
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Aquarium Manager is the complete companion for your fish tank โ€” marine reef or freshwater. Track water parameters, care for your fish and corals, and keep your aquarium healthy. It works fully offline and your data stays private on your device. WATER PARAMETERS Log and chart pH, KH, GH, salinity, ammonia, nitrite, nitrate, phosphate, calcium, magnesium and temperature. See trends over time and get an alert when a value goes out of your target range. FISH, CORALS & INVERTEBRATES Manage your aquarium animals with a built-in species guide: reef fish, freshwater fish, corals and invertebrates. Check care needs and the symptoms of common diseases. CALCULATORS & DOSING Salt mix, water changes and dosing calculators for KH, Ca and Mg. Get the numbers right without guessing. NITROGEN CYCLE Follow the nitrogen cycle and know exactly when your new tank is ready for fish. PHOTO JOURNAL Watch your aquarium evolve month by month with a before-and-after photo comparison. REMINDERS & MAINTENANCE Feeding, maintenance, night and emergency routines step by step, plus reminders for water tests and equipment checks. WORKS OFFLINE โ€” NO ACCOUNT NEEDED Everything works without an internet connection and your data lives only on your device. Create a free account only if you want to back it up to the cloud and use it on another device. Perfect for beginners and experienced aquarists: reef tanks, saltwater, freshwater, planted tanks and nano tanks.

Screenshots

Aquarist's Notes4 screens
Acuario Manager4 screens

Verdict

The call

The clearest difference is in-app purchases: Acuario Manager at none against Aquarist's Notes's 2. Acuario Manager also leads on update cadence (every 2 days vs every 6 days). Aquarist's Notes's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Aquarist's Notes sells 2 in-app purchases, starting at $1.99 per month. Acuario Manager asks for nothing beyond the download.

UpkeepUpdate frequency

Aquarist's Notes ships an update every 6 days, Acuario Manager every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard3 real differences ยท 3 level
Aquarist's Notes versus Acuario Manager: the parameters behind the verdict, then further details
ParameterAquarist's NotesAcuario Manager
PriceFreeFree
Update frequencyEvery 6 daysEvery 2 days โ€” better
AdsNo โ€” betterYes
In-app purchasesYesNo โ€” better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.415.0 โ€” better
Further details โ€” not scored
Size16 MB111 MB
Age rating4+4+
DeveloperLudek SloufGtphone

In-app purchases

2 purchases

Aquarist's Notes

Subscriptions2
  • Monthly subscription7 Days trial$1.991 Month
  • Annual subscription1 Month trial$9.991 Year
None

Acuario Manager

No in-app purchases

Questions

Is Aquarist's Notes free?
Aquarist's Notes is free to download, with in-app purchases available.
Is Acuario Manager free?
Acuario Manager is free to download, with no in-app purchases.
Do Aquarist's Notes or Acuario Manager have ads?
Acuario Manager shows ads; Aquarist's Notes does not.
Which is updated more often, Aquarist's Notes or Acuario Manager?
Aquarist's Notes ships an update every 6 days, and Acuario Manager every 2 days. Most recently, Aquarist's Notes was updated on October 30, 2026 and Acuario Manager on October 31, 2026.

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