Comparison

AquaticLog vs Senrium

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

Head to head
About

AquaticLog

Manage your aquarium with this comprehensive platform. Track water parameters, schedule maintenance, log livestock, and document your tank's progress with photos and videos. Connect controllers for automatic data import and sync across devices.

Highlights
  • Water parameter tracking
  • Smart reminders for maintenance
  • Livestock management
  • Equipment and dosing logs
  • Controller integration
  • Photo and video diary
  • Community features
Features
Read full description

AquaticLog keeps water parameters, livestock, equipment and care routines together for every freshwater tank and reef. ONE ACCOUNT, EVERY DEVICE Your log lives in your AquaticLog account, not on your phone. Sign in on a new iPhone, an iPad or the web at aquaticlog.com and everything is already there. Aquarists have trusted AquaticLog with their records for over 13 years. Keep your tanks on the iPhone Home Screen with widgets. WATER PARAMETERS Log pH, temperature, ammonia, nitrite, nitrate, phosphate, salinity, alkalinity, calcium, magnesium and more. Clear trend charts let you catch a swing before it reaches your fish or corals. Connect a Neptune Apex, Hydros, AquaWiz or Seneye for hourly readings, including Seneye NH3 and NH4. Delete bad readings in batches and schedule retests for out-of-range results. LIVESTOCK AND PLANTS Build a detailed record of every fish, coral, invertebrate, plant and amphibian you own. Add a photo as you add a new fish or coral. Track sex, temperament, diet, difficulty and reef-safety, and move inhabitants between tanks as your collection grows. Tank birthdays and gotcha days share a card you can dismiss. MAINTENANCE MADE SIMPLE Schedule water changes, dosing, feeding, testing and equipment cleaning. Smart reminders make sure nothing slips. Check off a task and it lands with a haptic; once nothing is due, your tank shows what's next. A daily streak beside Reminders rewards showing up. End a repeating schedule on a date or after a set count, and see your maintenance time per week. Service accounts can start client visits and finish them with notes and next-visit plans. DOSING AND FEEDING Track dosing and feeding with a precise history. Log feeding every 48 hours or at another fixed interval. Re-dose additives, repeat feedings and repeat water changes in one tap, prefilled with your last amounts. Repeated doses and feedings fold into one row per day. FISH ROOM AND WATER CHANGES Set up RO/DI with SpectraPure, BRS and Waterbox presets. Track filter changes and TDS for each membrane and DI stage. Manage supplies and spending in Fish Room, with INR support. PHOTO TIMELINE Track growth and coloration. Then vs Now slides between your first photo and your latest, with dates and tank age. Pinch to zoom. Start a build thread for your tank on the community forum and post what changed as it grows. ADVANCED TESTING Log ICP analyses and PAR readings. ICP warnings stay grouped; dismiss individual results and restore them anytime. Share test-kit reagents across tanks in Fish Room: logged tests count supplies down, with fill levels and days left. EQUIPMENT Track pumps, lights and filters, with ratings and reviews. Browse products by category or brand, see which tanks use them, and add them to your tank or shopping list. A spending report totals what you've paid per store, filterable by tank and date range (Pro). EXPLORE AND CONNECT Search public tanks by what lives in them — look for a torch coral in the 15-30 gallon range and see how other nano reefs are scaped. Filter by style (mixed reef, SPS, LPS, soft coral, planted, macro algae, fish only), size, water type and activity, then open any tank to see its photos, parameters, gear and livestock. Find Today, Aquariums, Species, Products and News together in Explore. Read reviews, like photos and earn achievements. Make your tank public to share its link, or copy a snapshot of its parameters, livestock and gear to ask for advice. Available in English, German, Spanish, French, Italian, Dutch, Polish, Russian, Ukrainian and Brazilian Portuguese. Start for free — new accounts log water parameters without limits for 30 days — then upgrade to Pro for advanced tracking and tools. The yearly plan starts with a 7-day free trial. Get daily AI suggestions based on tank data and see when each was generated. Privacy Policy: https://www.aquaticlog.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Senrium

Monitor your aquarium's critical parameters in real-time with this app. It connects to sensors to alert you to emergencies like equipment failures or leaks, offering a simpler alternative to complex aquarium controllers.

Highlights
  • Real-time aquarium parameter monitoring
  • Emergency alerts for equipment failure
  • Leak detection
  • Simple sensor setup
  • Customizable limit definitions
Read full description

The Senrium app enables mobile devices to connect with a variety of sensor products, offering real-time monitoring of critical aquarium parameters that can swiftly change during emergencies. Currently, the Senrium offers the H1 Aquarium Monitor, which safeguards both you and your aquarium against equipment failures like malfunctioning heaters, chillers, pumps, filters, or leaks. Unlike expensive, cumbersome, and intricate aquarium controllers, Senrium simplifies the setup process: just place the sensor in your tank and define your limits. Senrium will promptly alert you when your aquarium requires attention.

Screenshots

AquaticLog4 screens
Senrium4 screens

Verdict

The call

The clearest difference is rating: Senrium at 5.0 against AquaticLog's 4.2. Senrium also leads on iOS requirement (15.6 vs 18.1). AquaticLog's advantage is ads (none vs shown) and ratings volume (409 vs 2). On price, 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

Both are free to download. AquaticLog sells 3 in-app purchases, starting at $4.99 per month and Senrium sells 3 in-app purchases, starting at $2.49 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Senrium holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: AquaticLog has 409 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

AquaticLog ships an update every 10 days, Senrium every 6 weeks. The most recent releases landed on November 10, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
AquaticLog versus Senrium: the parameters behind the verdict, then further details
ParameterAquaticLogSenrium
PriceFreeFree
Rating4.2 (409 ratings)5.0 (2 ratings) — better
Positive reviews70.1% of reviews—
Number of ratings409 — better2
Update frequencyEvery 10 days — betterEvery 6 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.115.6 — better
Further details — not scored
Size25 MB64 MB
Age rating4+4+
DeveloperLonnex IncSamuel Steele

In-app purchases

3 purchases

AquaticLog

Subscriptions2
  • Pro Monthly Subscription$4.991 Month
  • Pro Yearly Membership7 Days trial$39.991 Year
One-time1
  • Pro Lifetime Membership$149.99
3 purchases

Senrium

Subscriptions3
  • Single Aquarium (Monthly)$2.491 Month
  • Mutli (Monthly)$3.991 Month
  • +Pro (Monthly)$14.991 Month

Questions

Is AquaticLog free?
AquaticLog is free to download, with in-app purchases available.
Is Senrium free?
Senrium is free to download, with in-app purchases available.
Which has better reviews, AquaticLog or Senrium?
Senrium is rated higher. AquaticLog averages 4.2 out of 5 from 409 ratings, while Senrium averages 5.0 from 2 ratings.
Do AquaticLog or Senrium have ads?
Senrium shows ads; AquaticLog does not.
Which is updated more often, AquaticLog or Senrium?
AquaticLog ships an update every 10 days, and Senrium every 6 weeks. Most recently, AquaticLog was updated on November 10, 2026 and Senrium on November 3, 2026.

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