SereneSea - Reef Tank Journal

Water Logs, Tasks & Reminders

Free · In-App Purchases · Designed for iPad. Not verified for macOS.

Keep water quality, maintenance, livestock, equipment, photos, and long-term marine aquarium records organized in one place with SereneSea. When keeping a marine tank, data is rarely missing—it's usually scattered across test logs, note apps, photo galleries, and various tools. SereneSea centralizes water parameters, maintenance routines, livestock, equipment, photos, and key changes into a single tank profile. It helps you not only log today's details but also look back and truly understand your aquarium's journey. 【Water Parameters & Long-Term Trends】 Track essential marine metrics like Ca, Mg, KH, NO3, PO4, salinity, and specific gravity, or add your own custom parameter items. Use trend charts to review long-term changes over time, cross-referenced with dosing and lighting adjustment logs to clearly see the impact before and after every tweak. 【AI Import for Historical Water Logs】 No need to manually re-type old water parameter records stored in notes, spreadsheets, screenshots, or other places. SereneSea provides a structured prompt/format—simply use your preferred AI tool to organize your raw data and paste the result back into the app. Preview, edit, and select which entries to keep before importing. Nothing is written to your official records until you confirm. 【Maintenance & Reminders】 Set up schedules for water changes, cleaning, additives, and equipment maintenance, and track both pending tasks and completed history. Every completed task leaves a historical record, so daily care no longer relies solely on memory. 【Livestock, Equipment & Consumables】 Centralize records for fish, corals, hardware, and media, including name, category, date, price, notes, and more. Includes AI Import for livestock and equipment—batch-organize your old records and verify each entry in the app before importing. 【Photos, Milestones & Tank History】 Keep tank photos and major events together on a unified timeline—including livestock additions, hardware upgrades, parameter adjustments, and tank status changes. Over time, SereneSea becomes more than just a logging tool; it becomes the growth history of your reef tank. 【Shared Tank Maintenance】 If your aquarium is cared for by more than one person, use the Shared Maintenance feature. Co-maintainers can view shared tank data, complete scheduled tasks, and add water records or milestone events, reducing repetitive actions and communication gaps. 【Backup & Restore】 Supports ZIP file export/import as well as optional Google Drive cloud backup. Years of accumulated tank records don't have to stay trapped on a single device. 【Practical Tools for Marine Aquarists】 Includes built-in calculators and helper tools for marine tanks, keeping testing, maintenance, and daily management all in one app. 【Built for Marine Hobbyists】 Find local marine aquarium shops in Taiwan, making it convenient for both tank management and real-world store visits and purchases. Core features can be used immediately without account registration. Simply choose to sign in with Google Drive when you need cloud backups or shared maintenance. Primary tank care features are free to use; VIP is available mainly for an ad-free experience and to support ongoing development. Record every change in your reef tank with care. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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This update: • Adds a Lifetime VIP purchase option, including a dedicated upgrade path for eligible annual subscribers. • Improves the full-screen water quality view and history table readability. • Adds a right-side value panel and horizontally scrollable date strip to Water Trends. • Adds Preparation Supplies and Bookkeeping to Merchant mode. • Improves backup, restore, and older-data compatibility, along with additional UI and stability fixes.

Version 1.0.91

The developer, ZHAOWEI KE, 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 Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • User Content
    • Identifiers

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location
    • Identifiers
    • Usage Data

Privacy practices may vary based, for example, 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

Provider
  • ZHAOWEI KE
Size
  • 247.1 MB
Category
  • Lifestyle
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPad
    Requires iPadOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
  • Lifetime VIP - Annual Plan ₱ 499.00
  • Lifetime VIP ₱ 999.00
  • QuietSea VIP Yearly ₱ 499.00
  • QuietSea VIP Monthly ₱ 49.00
  • Learn More
Copyright
  • © 2026 柯肇威
  • Developer Website
  • Privacy Policy