Best Reef Tank Guides Apps

242+ iOS apps curated and reviewed

3.5 avg rating

19 free apps

Updated October 2026

Finding the right reef tank guides apps can be overwhelming with so many options. We've analyzed 242+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Reef Tank Guides Apps (October 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Reef Coach – Reef Tank AI	Free	1.0★ (1)	No	Yes	Sep 2026
2	CoralCalc: Reef Dosing Guide	Free	—	No	Yes	Jun 2026
3	Reef Diary Aquarium Management	Free	1.0★ (1)	No	Yes	Oct 2026
4	Reefability	Free	3.0★ (30)	No	Yes	Oct 2026
5	ReefFlow: Reef & Aquarium	Free	—	No	Yes	Oct 2026
6	Reef.Tools	Free	3.0★ (2)	No	No	May 2026
7	Reef Expert: Fish & Coral	Free	4.6★ (49)	No	Yes	Sep 2026
8	Reef Guard	Free	—	No	Yes	Sep 2026

Top Picks for Reef Tank Guides

#1

Reef Coach – Reef Tank AI by Justin Pruskowski

Reef tank AI, sync & widgets

Editor's Choice

1.0(1 ratings)

FreeIn-App Purchases

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Reef Coach – Reef Tank AI screenshot 4

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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

CoralCalc: Reef Dosing Guide by JUHWAN PARK

Reef Tank Alk Ca Mg Dosing

Strong Contender

0.0(0 ratings)

FreeIn-App Purchases

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#3

Reef Diary Aquarium Management by Christian Buchholz

Your aquarium manager

Worth Considering

1.0(1 ratings)

FreeIn-App Purchases

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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.

More Reef Tank Guides apps to explore

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

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

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

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

smart reef tank management

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

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

Best Reef Tank Dosing App

Reef Tank Addict

Reef Tank Addict

Reef Tank Addict

by J. Louis Technology

Smarter reef tank tracking

ReefMate: Aquarium Tracker&Log

ReefMate: Aquarium Tracker&Log

ReefMate: Aquarium Tracker&Log

Reef & Aquarium Management

Reef Chronicles

Reef Chronicles

Reef Chronicles

by TALASTACK LLC

Track aquarium parameters, calculate precise dosing for alkalinity, calcium, and magnesium, and visualize your entire history with detailed charts. This app provides a comprehensive logbook for all your aquarium needs, including tasks, consumables, and livestock management.

Parameter logging (22 parameters)Automated dosing calculationsDaily consumption analysis

Blue - Upgrade your reef life

Blue - Upgrade your reef life

Blue - Upgrade your reef life

Vos récifs, notre passion !

Manage and grow your marine reef aquarium with this comprehensive app. Track water parameters, access detailed species information, and connect with a community of enthusiasts. Offers guidance for beginners and opportunities to win prizes.

Precise water parameter measurementComprehensive statistics trackingDetailed fact sheets for marine life

📊 Productivity

free with in-app purchases

by Techomatic Limited

This tool displays data from Apex Fusion and Focustronic equipment, allowing for quick data checks. It is a supplementary tool and users should always use the official apps for making any adjustments to their aquarium systems.

Data visualization for aquarium equipmentSupports Apex FusionSupports Focustronic

Frag: Aquarium & Reef Tracker

Frag: Aquarium & Reef Tracker

Frag: Aquarium & Reef Tracker

Water Test Log & Tank Trends

Offline reef tank logbook

This offline logbook helps reef tank enthusiasts meticulously track water parameters, equipment maintenance, and livestock. It offers detailed logging for various parameters and test kits, with advanced features like dosing intelligence and coral growth timelines available through a one-time purchase.

Offline parameter loggingTest kit & salt batch trackingEquipment service tracker

free with in-app purchases

Reef ID: Fish & Coral ID

Reef ID: Fish & Coral ID

Reef ID: Fish & Coral ID

Reef Tank Fish and Coral Care

Instantly identify marine life in your aquarium using AI. Access detailed species profiles and manage your tank's inhabitants. Get care tips and track their health.

AI-powered fish and coral identificationDetailed species profilesTank inventory management

free with in-app purchases

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 October 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 — 19 of the top reef tank guides apps we rank are free to download, including Reef Coach – Reef Tank AI and CoralCalc: Reef Dosing Guide.

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 October 2026.

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

We track 242+ reef tank guides apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.