Reef Book

Smart Logbook for Aquarists Take control of your water parameters. Log tests, spot trends, and keep every tank thriving. Whether you're maintaining a reef, planted tank, or any other aquarium setup, Reef Book adapts to your needs. Create dedicated logbooks for each aquarium and track year-over-year progress. With beautiful trend graphs, customizable parameters, and seamless iCloud sync across all your devices, managing multiple tanks has never been easier. Track What Matters • Log any parameter with our smooth, intuitive interface • Customize ranges and units for your specific setup • Mark favorites for quick access to critical measurements • Support for unlimited tanks See the Big Picture • Trend charts reveal patterns at a glance • Full-screen tank backgrounds for instant recognition • Long-term tracking across multiple logbooks • Notes and smart tags to track maintenance, dosing, and tank events Always in Sync • Automatic iCloud backup protects your data • Access your logs from any device • No account or setup required Plus fun iMessage stickers!