Brack

Reef Tank Parameter Logger

$1.99 · Designed for iPad. Not verified for macOS.

Keep your reef tank thriving with Brack — the fastest, simplest water parameter logger for saltwater hobbyists. LOG IN 60 SECONDS Enter all 8 reef parameters in one quick session. Brack pre-fills your last reading so you only change what moved. INSTANT STATUS DASHBOARD See every parameter's safe zone status at a glance. Color-coded cards (green/yellow/red) tell you in 1 second if your reef is healthy. TREND CHARTS 4 weeks of history per parameter, visualized with Swift Charts. Safe zone overlays make it obvious when a value is drifting. Share any chart with one tap. 100% OFFLINE No account. No subscription. No cloud. Your data stays on your device — even in airplane mode on the way to your local fish store. REEF-SAFE ZONES BUILT IN pH · Ammonia · Nitrite · Nitrate · Alkalinity · Calcium · Magnesium · Salinity · Temperature — all reef-standard safe ranges baked in. ONE-TIME PURCHASE Pay once, own forever. No recurring fees, no feature paywalls. Brack is for reef hobbyists who want to track their parameters without friction. Log. See. Decide. Get back to enjoying your tank.

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v1.1 — Refined app icon with Liquid Glass aquarium aesthetic and a more distinctive look. Same Brack inside, sharper outside.

Version 1.1

The developer, 焜元 施, 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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    焜元 施
    Size
    1.4 MB
    Category
    Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 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 Kunyuan Shi
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

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

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