Best Reef Tank Guides Apps

244+ iOS apps curated and reviewed

3.8 avg rating

20 free apps

Updated September 2026

Finding the right reef tank guides apps can be overwhelming with so many options. We've analyzed 244+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Reef Tank Guides Apps (September 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Reef Coach – Reef Tank AI	Free	1.0★ (1)	No	Yes	Sep 2026
2	NextUpReef	Free	5.0★ (1)	No	Yes	Sep 2026
3	Reef Trak - Reef Manager	Free	4.9★ (34)	No	Yes	Sep 2026
4	CoralCalc: Reef Dosing Guide	Free	—	No	Yes	Jun 2026
5	Aquarium Manager: Tank Log	Free	4.3★ (185)	Yes	Yes	Sep 2026
6	Reef.Tools	Free	3.0★ (2)	No	No	May 2026
7	Bulk Reef Supply	Free	4.9★ (3K)	No	No	Sep 2026
8	ReefFlow: Reef & Aquarium	Free	—	No	Yes	Sep 2026

Top Picks for Reef Tank Guides

#1

Reef Coach – Reef Tank AI by l0g1c.us

Reef tank AI, sync & widgets

Editor's Choice

🌟 Lifestyle

1.0(1 ratings)

FreeIn-App Purchases

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This app helps reef tank enthusiasts monitor water chemistry, coral health, and equipment maintenance with on-device AI. It provides detailed parameter tracking, coral health analysis, and automated reminders for a healthier, more manageable aquarium.

#2

NextUpReef by Adam Winstead

Reef Tracker

Strong Contender

🔧 Utilities

5.0(1 ratings)

FreeIn-App Purchases

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This app helps reef tank hobbyists manage their aquarium's health and equipment. It offers AI-powered analysis, parameter logging, smart outlet control, and community insights to optimize tank conditions and simplify maintenance.

#3

Reef Trak - Reef Manager by Joe Marino

Parameters, Care, Insights

Worth Considering

🌟 Lifestyle

4.9(34 ratings)

FreeIn-App Purchases

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This app helps reef tank enthusiasts manage all aspects of their aquarium, from daily testing and livestock records to equipment tracking and maintenance schedules. It provides tools for data analysis, trend spotting, and preventing costly mistakes, offering both free and premium features.

More Reef Tank Guides apps to explore

CoralCalc: Reef Dosing Guide

CoralCalc: Reef Dosing Guide

CoralCalc: Reef Dosing Guide

Reef Tank Alk Ca Mg Dosing

Aquarium Manager: Tank Log

Aquarium Manager: Tank Log

Aquarium Manager: Tank Log

Fish, plant & water keeping

Manage and monitor freshwater or marine aquariums with detailed tracking of fish, plants, and equipment. Log water parameters, visualize trends with charts, and maintain a history of all tests and measurements. Plan and receive reminders for maintenance tasks and important events.

Unlimited aquariums and tanksDetailed fish, invertebrate, and plant trackingEquipment management

free with in-app purchases

Reef Dosing Simplified

This app simplifies reef tank maintenance with science-backed tools. It offers a precision dosing calculator for over 30 elements, customizable schedules, and insights into water chemistry. Compare your tank's parameters to natural ocean values.

Precision dosing calculator for 30+ elementsCustomizable dosing schedulesReef chemistry insights

Bulk Reef Supply

Bulk Reef Supply

Bulk Reef Supply

Saltwater Aquarium Supplies

This app provides a curated selection of saltwater aquarium supplies and educational resources. It features reef calculators to simplify tank maintenance and offers a wide range of products for creating a thriving aquatic habitat. Expert customer support is also available.

Curated aquarium suppliesEducational videos and articlesReef calculators (water volume, sand, costs, additives)

🛍️ Shopping

ReefFlow: Reef & Aquarium

ReefFlow: Reef & Aquarium

ReefFlow: Reef & Aquarium

Reef, marine & freshwater log

This app helps aquarium enthusiasts manage their tanks with a comprehensive digital log, water parameter tracking, and smart maintenance reminders. It also features a marketplace for aquarium products and AI-powered tank planning.

Unlimited tank loggingWater parameter tracking & chartsSmart maintenance reminders

smart reef tank management

Reef Diary Aquarium Management

Reef Diary Aquarium Management

Reef Diary Aquarium Management

Your aquarium manager

Manage your reef or freshwater aquarium with this comprehensive tool. Track water parameters, schedule maintenance, and monitor your aquatic life and equipment. Works offline to keep your ecosystem healthy and thriving.

Smart parameter tracking for reef and freshwaterVisual trend charts for water parametersMultiple tank support

Reef hobby community + market

Connect with fellow reef aquarium enthusiasts, track your tank's parameters and livestock, and buy or sell corals, fish, and dry goods in a dedicated marketplace. Features include community forums, direct messaging, and detailed tank logging tools.

Community forums and direct messagingMarketplace for corals, fish, and dry goodsTank parameter logging and charting

🌐 Social Networking

AI-driven reef tank management

This AI-powered app offers scientific precision for managing coral reef aquariums. It analyzes microbiome health, water chemistry, and light optimization, and can identify issues from tank photos. It provides tools for hobbyists and professionals to maintain thriving reef ecosystems.

AI-driven analysis of reef tank healthSmart photo diagnostics for issue identificationEvidence-based solutions and recommendations

📊 Productivity

free with in-app purchases

ReefMate: Aquarium Tracker&Log

ReefMate: Aquarium Tracker&Log

ReefMate: Aquarium Tracker&Log

Reef & Aquarium Management

Best Reef Tank Dosing App

Reef Tank Addict

Reef Tank Addict

Reef Tank Addict

by J. Louis Technology

AquaLens: Aquarium Log Tracker

AquaLens: Aquarium Log Tracker

AquaLens: Aquarium Log Tracker

Fish Tank Care & Water Test

This app helps aquarium enthusiasts track water chemistry, identify fish and plants from photos, and manage tank maintenance. It offers AI-powered guidance based on your aquarium's history, supporting both freshwater and saltwater setups. Plan layouts and monitor livestock for healthier aquatic environments.

Aquarium log and tank journalWater test scanning and historyFish, plant, and coral identification

Largest online reef community

Connect with a global community of saltwater and reef aquarium enthusiasts. Share tank progress, ask questions, and exchange expert advice. Discover resources for all levels of reefkeeping, including a marketplace and product reviews.

Share tank photosAsk detailed questionsSwap expert advice

🌐 Social Networking

Reef Buddy: Reef Tank Tracker

Reef Buddy: Reef Tank Tracker

Reef Buddy: Reef Tank Tracker

Saltwater tank tests & log

Easily log, monitor, and analyze your saltwater aquarium's critical parameters. Get smart insights and personalized advice to maintain a healthy reef tank. Syncs across devices and offers guidance for manual test results.

Log critical aquarium parametersMonitor KH, salinity, pH, Ca, Mg, and moreAnalyze data with automated insights

Reef Expert: Fish & Coral

Reef Expert: Fish & Coral

Reef Expert: Fish & Coral

AI Reef Expert Coach

This AI-powered assistant helps saltwater aquarium owners maintain healthy fish and corals. It offers instant health assessments from photos, personalized care recommendations, and fair price checks for marine life. Get expert advice 24/7 to prevent costly mistakes and keep your reef thriving.

AI photo health assessments for fish and coralsPersonalized care recommendationsFair price checks for marine life

free with in-app purchases

AI Reef Tank Water Monitor

FAQ about Reef Tank Guides

What are the best reef tank guides apps for iPhone?

Reef Coach – Reef Tank AI tops our reef tank guides apps ranking as of September 2026, with a 1.0-star average from 1 App Store ratings, and it's free to download.

Are there free reef tank guides apps for iPhone?

Yes — 20 of the top reef tank guides apps we rank are free to download, including Reef Coach – Reef Tank AI and NextUpReef.

Does Reef Coach – Reef Tank AI have ads or in-app purchases?

Reef Coach – Reef Tank AI has no ads and offers in-app purchases, according to its App Store listing as of September 2026.

How many reef tank guides apps are on the App Store?

We track 244+ reef tank guides apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.

What is Reef Coach?

Reef Coach is a lifestyle app designed for serious reef tank enthusiasts. It helps you track water chemistry, monitor coral health using AI, manage dosing schedules, and keep up with equipment maintenance.

What are the subscription options for Reef Coach?

Reef Coach offers a 'Reefer' tier for $14.99/month or $129/year, which includes AI coral analysis, ICP integration, and unlimited history. There are also 'Aquarist Monthly' and 'Reefer Monthly' plans at $4.99/month and 'Reefer Annual' at $29.99/year.