FinLog: Aquarium Tracker & Log

About FinLog: Aquarium Tracker & Log

Track, manage and perfect your aquarium in one place.

Finlog is built for fishkeepers, reefers and aquascapers who want more than a basic logbook. Smart tank health scoring, contextual suggestions, a 1552 species database and AI-powered advice keep your reef, freshwater, planted or saltwater aquarium thriving. Critical parameters front and center, health status at a glance, actionable guidance without digging through menus.

SMART TANK HEALTH SYSTEM

The scientific aquarium app that scores your tank based on your specific tank type, size and worst parameter. Reef, coldwater, planted and saltwater tanks scored differently because every aquarium has different needs. Know whether your water parameters are putting your fish, corals and invertebrates at risk. See whether your tank is Thriving, Healthy, Fair or Critical every time you open the app.

SMART SUGGESTIONS

Contextual guidance based on your tank type from day one. New planted tank gets CO2, light and nutrient dosing advice. New saltwater setup gets ammonia cycle guidance. New reef gets alkalinity, calcium and magnesium coaching for coral growth. Suggestions update as your parameter history builds.

WATER PARAMETER TRACKING

Log pH, salinity, temperature, nitrate, nitrite, alkalinity, calcium, magnesium, ammonia, phosphate, GH, KH and TDS. Full parameter history, trend charts and water quality alerts. Catch water chemistry issues before they crash your tank. Export your complete log anytime.

PARAMETER HISTORY AND TRENDS

Every logged reading builds a history showing trends over days, weeks and months. Catch a drifting pH. Spot nitrate creeping between water changes. See whether alkalinity is stable enough for sps coral growth. History charts make patterns visible that single test results hide.

1552 SPECIES DATABASE

The most comprehensive aquarium species database on Android. 985 fish, 634 reef species, 219 corals, 195 aquatic plants and 153 invertebrates including shrimp, snails and crabs. Full care data, ideal parameter ranges, feeding requirements and compatibility information for freshwater and saltwater species. Powered by iNaturalist and FishBase.

COMPATIBILITY GUARD

15 rules check aggression, territory, water chemistry, temperature and size before you add livestock. Know whether a fish, coral or invertebrate is safe before you buy it. Works across freshwater, saltwater, reef and planted setups.

AI TANK ADVISOR

Personalized insights based on your actual tank data, livestock and parameter history. Specific advice for your setup — not generic tips that ignore your tank type and stocking. Knows the difference between a planted tank with soft water fish and a reef with sensitive sps corals.

MAINTENANCE AND REMINDERS

Feeding logger, water change reminders, equipment maintenance tracking and a full tank timeline with photos. Never miss a water change again. Schedule reminders for dosing, top offs and any regular aquarium maintenance task.

COMMUNITY

Share reef builds, planted aquascapes and freshwater setups. Get help with water chemistry. Post parameter questions and get answers from experienced fishkeepers. A hobbyist community built into the app.

ACHIEVEMENTS AND STREAKS

A logging streak, XP system and 45 achievements keep your aquarium maintenance consistent. Good tank habits become rewarding rather than a chore.
SUPPORTED TANKS
Freshwater, Saltwater, Reef, Planted, Coldwater, Brackish
PRO
One lifetime payment. No subscription. No ads. No data selling. Cloud backup included. Own it forever.

Built by a reefer who lost corals to parameter swings better tracking would have caught.
Download Finlog — your aquarium deserves better than a spreadsheet.
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