Aquarium Harmony - Care Log

Aquarium Harmony is a calm aquarium care log for every tank you keep. Log water tests, get reminders for water changes and maintenance, and see at a glance how healthy your aquarium is. The home screen is a living, animated aquarium that matches your tank type and reflects how well it is cared for.

WHY AQUARIUM HARMONY
• Know what needs attention today, without digging through notes
• Keep water parameters stable and catch problems early
• Never forget a water change, filter clean, feeding or water test
• Remember every fish, shrimp, snail, plant and coral in your tank
• Watch your aquarium improve over weeks and months

WATER TESTS AND WATER PARAMETERS
• Log temperature, pH, ammonia, nitrite, nitrate, GH, KH, TDS, phosphate, salinity, alkalinity, calcium, magnesium and more
• Each tank gets the parameters that matter for its type
• Every value is checked against its preferred range, with a clear warning when it drifts out
• Charts show the history and trend of each parameter, and readings outside the range stand out in red or blue
• Units you know: °C or °F, liters or gallons

AQUARIUM HEALTH SCORE
• Three health rings for care, water and stability, with the reasons behind each one
• Status at a glance: good, needs attention or action needed
• Care streaks, days together and milestones

CARE REMINDERS AND FEEDING
• A suggested care routine for your tank type, ready in one tap
• Recurring tasks for water changes, water tests, filter maintenance, glass cleaning, plant trimming, dosing, medication or anything you add yourself
• Feeding schedules with portions, so everyone at home knows who fed the fish
• Reminders arrive when a task is due, with a Done button right in the notification. No spam, only your schedule

INHABITANTS AND SPECIES GUIDE
• Add fish, shrimp, snails, plants and corals to each aquarium
• 74 built-in species with preferred water ranges, care difficulty, temperament and group size
• See which water ranges your inhabitants share before you add new livestock
• Add your own species when something is not on the list

SMART INSIGHTS
• Spots trends in your water, like rising nitrate, before they turn into problems
• Shows what your last water change did to your values
• Early warnings, links between parameters and forecasts with Premium

TIMELINE, PHOTOS AND SHARING
• A timeline of every test, water change, milestone and photo
• Take photos in the app and watch your aquascape grow
• Export an aquarium as a file and share it with a friend, or move it to a new phone

APPLE WATCH, WIDGETS AND COMPLICATIONS
• Apple Watch app: today's care, health rings and one-tap task completion
• Home Screen widgets for one tank or your whole fish room
• Watch face complications and Smart Stack

MADE FOR EVERY KIND OF FISH TANK
Freshwater community tanks, planted aquascapes, betta tanks, shrimp tanks, cichlid tanks, coldwater tanks, marine, reef and brackish aquariums. Beginners get a clear care routine to follow. Experienced fishkeepers get the detail they want without the clutter of a spreadsheet.

SIMPLE AND PRIVATE
• No account or sign-up needed
• Your aquarium data stays on your device
• Light and dark appearance

AQUARIUM HARMONY PREMIUM (OPTIONAL)
Aquarium Harmony is free for one aquarium with the core care tools. Premium adds unlimited aquariums and inhabitants, your complete history, deeper insights with forecasts and early warnings, the full health breakdown, weekly reports and no ads. Choose a monthly or yearly subscription or a one-time lifetime purchase. Subscriptions renew automatically until cancelled. Prices are shown in the app before any purchase.

Happy fishkeeping

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