TankLogPlus: Aquarium LogTankLogPlus: Aquarium Log
No pass/fail verdicts on your water. Just log it and watch the trend on a chart.
Download on the App Store
Screenshots
Features
A ring gauge counts down to your next water change
Days since your last change and days remaining in the cycle are shown on one large ring per tank, so you always know how much time is left.
Log pH, ammonia, nitrite, nitrate and temperature
Track five water parameters independently. Anything you haven't tested stays a dash — there's no pressure to fill in a number you don't have.
Charts show the trend, never a verdict
View 30-day, 90-day or all-time trends with Swift Charts. There are no safe-zone bands or danger-zone colors by design — just the numbers over time.
Log a water change, and the schedule recalculates itself
One tap on "Changed" logs today's change and reschedules the ring gauge and notification automatically. No manual calendar juggling.
Track multiple tanks, notified the evening before
Each tank gets its own card in the list. A single notification arrives at 8 PM the day before the next change is due, so you never miss the window.
A test kit gives you a number. A week later that number is gone, and you are guessing whether anything is drifting.
TankLogPlus keeps those numbers. Log a test, log a water change, and watch the trend. That is the whole app.
ONE RING PER TANK
Each tank shows a ring that counts down to its next water change. At a glance you know which tank is due and which one you did yesterday. Tap "Changed the water" and the ring resets and the next date is recalculated.
FIVE VALUES, THIRTY SECONDS
- pH, ammonia, nitrite, nitrate, temperature
- Leave any of them blank if you did not measure it
- Saved values appear immediately on the detail screen and the chart
THE TREND, NOT A VERDICT
Pick a parameter and a window — 30 days, 90 days, or everything — and see the line. There are no green zones, no red warnings, no "your water is fine" messages. Your test kit and your own judgement decide that. The app only remembers what you measured.
AS MANY TANKS AS YOU KEEP
Name, volume, and how many days between changes. Each tank keeps its own tests, its own changes, and its own schedule. A reminder arrives the evening before a change is due.
LITRES OR GALLONS, CELSIUS OR FAHRENHEIT
Switch in Settings. Your saved data does not change — only how it is shown.
Everything stays on your device. No account, no ads, no tracking, no subscription.