I recently found a new app called Aquarimate. So far I like it pretty well. You can set reminders for water testing or cleaning and log in water test parameters. You can even set highs and lows and it will alert you if it goes out of range. You can keep track of livestock and plants ... It even keeps up with how long you've had each fish. I especially love the reminders! I'm ADHD and forget EVERYTHING! It's nice to be reminded that it's time to test the water or do a cleaning. Just thought I'd share! Let me know if you have any fish apps you like.