Reefline Log

Fast reef water test logs

Only for iPhone

$0.99 · Designed for iPhone. Not verified for macOS.

iPhone

Record a complete water test in seconds. See your own trends, target bands, and history—with no account, subscriptions, ads, or tracking. Reefline Log is the focused water-test log for reef keepers who want quick entry and clear history without an all-in-one aquarium platform. LOG IN SECONDS • Enter a batch of readings in one place. • Previous values are ready when your test context loads, so unchanged numbers take less work. • Skip any parameter, change the test date and time, and add one short note. TRACK WHAT MATTERS • Record alkalinity, calcium, magnesium, nitrate, phosphate, salinity, temperature, and pH. • Add custom numeric metrics for the other measurements you care about. • Choose the units that match your test kit, with visible conversions where supported. • Set optional personal low and high target bands. Reefline shows your bands; it never tells you what a value should be. SEE YOUR HISTORY • See the latest readings and time since your last test on the dashboard. • Open charts for each metric across 7-day, 30-day, 90-day, or all-time views. • Review, edit, or delete saved test sessions. KEEP YOUR TANKS ORGANIZED • Track multiple tanks and keep each tank's readings, metrics, charts, and reminders together. • Create local recurring reminders for water tests or dosing. OWN YOUR DATA • Works offline with local storage on your iPhone. • Optionally sync through your private iCloud database. • Import a Reefline CSV or export your readings whenever you want. Reefline Log has no account, subscription, advertising, tracking, or AI recommendations. Every feature is included in one purchase, and your target bands remain your own.

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The developer, Phoenix Strategies LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

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    Accessibility

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    Information

    Seller
    Phoenix Strategies LLC
    Size
    3.5 MB
    Category
    Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Phoenix Strategies LLC
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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