Comparison

DTD Tracker Mobile vs ReefKG

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DTD Tracker Mobile

This app provides advanced security solutions for asset protection and recovery, including GPS tracking and video analytics. It supports law enforcement agencies with data-driven intelligence to prevent and detect crime, aiding in apprehension and asset recovery.

Highlights
  • GPS tracking
  • Video analytics
  • Asset protection
  • Crime detection
  • Law enforcement support
  • 24/7 tracking support
Features
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Founded in 1971, 3SI is a market leader in pioneering advanced security solutions for asset protection and recovery. We are always ahead of the curve starting with the commercialization of dye and ink staining, to our ongoing development in GPS tracking and beyond. 3SI and Wren Solutions merged in June 2023. Leveraging a combined 90 years of experience, we are leaders in security technology solutions that deliver proven people, asset, and loss protection. By enabling a robust defense against the rapid rise of violent robbery and organized retail crime afflicting our communities, 3SI and Wren help customers prevent and detect crime while safeguarding their staff and patrons at more than 75,000 locations worldwide. Our combined solutions include asset tracking, video analytics, and seamless data transmission during criminal incidents, giving law enforcement a crucial edge in apprehension, asset recovery, and convicting criminals. Our solutions make a real impact and have assisted law enforcement with over 19,000 arrests. CovertTrack, a 3SI Company, supports more than 3,000 federal, state, county, and municipal agencies with tracking, tactical, and surveillance solutions, further aiding their efforts to proactively combat crime within their jurisdictions, leading to immeasurable arrests. Recognizing the varying needs across law enforcement branches, we’ve customized solutions for them. Our vision is to create a safer world. Law Enforcement Our solutions supply actionable, data-driven intelligence to over 10,200 law enforcement agencies, sending this information automatically to their dispatch centers and officers for prompt responses to financial and retail crimes. The trust these agencies place in our notifications isn’t coincidental; it’s cultivated through the efforts and training provided by our Law Enforcement Division (LED). Our LED comprises 24 dedicated, retired law enforcement professionals with unparalleled expertise. 24/7 Support Crime is not a 9-to-5 problem, and successful crime solutions need to be available round-the-clock. To support our solutions, our 24/7/365 Tracking Support Center (TSC), based in the USA, is on the job. Every crime event involving a 3SI solution is logged and managed by the TSC, and we support local dispatchers and law enforcement every step of the way during an active track. The same 24/7 support services are available to our customers because we know that you need support when you need it. Product Installation, Maintenance and Training 3SI’s dedicated Field Service Organization provides industry leading installation, maintenance and training. Our products support the do-it-yourself as well for customers who prefer to handle on their own. Training videos and guides are available at our Customer Portal.

About

ReefKG

Features
Read full description

ReefKG – Reef Tank Management App The smartest way to manage your reef aquarium. ReefKG helps reef keepers stay consistent with dosing, parameter tracking, and maintenance, powered by an Autonomous Stability Engine that monitors your tank around the clock. Functionality: - Reef parameter tracking, log alkalinity, calcium, and core reef parameters after every test. - Smart dosing calculator with intelligence that doesn't just calculate your dose it learns your tank and controls it. - The Autonomous Stability Engine monitors chemistry trends and catches drift early. - Real-time alerts notify you when parameters are off or maintenance is overdue, while aquarium maintenance reminders help schedule water changes, testing, and dosing routines. - Tank log, every test, dose, and maintenance action recorded in one place. - Trend charts, track how your parameters move over time. Built for: - Reef tank hobbyists, managing calcium, alkalinity, and reef parameters daily. - Saltwater aquarium owners who want structured, reliable reef care. - Nano reef and coral tank keepers. - Beginners and experienced aquarists alike. Your reef aquarium management companion to help you master reef tank stability for a thriving reef today and tomorrow One app. Everything your reef needs to stay stable, healthy, and thriving. Subscription Information: ReefKG offers auto-renewable subscription for premium features: • Monthly Subscription (1 month) Subscription pricing is displayed in your local currency inside the app and on the App Store subscription sheet at the time of purchase. Payment will be charged to your Apple ID account at confirmation of purchase. Subscription renews automatically unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription anytime in your App Store account settings. Privacy Policy: https://reefkg.com/privacy-policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

DTD Tracker Mobile4 screens
ReefKG4 screens

Verdict

The call

The clearest difference is in-app purchases: DTD Tracker Mobile at none against ReefKG's 2. ReefKG's advantage is update cadence (fortnightly vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ReefKG sells 2 in-app purchases, starting at $12.99 per month. DTD Tracker Mobile asks for nothing beyond the download.

UpkeepUpdate frequency

DTD Tracker Mobile ships an update monthly, ReefKG fortnightly. The most recent releases landed on June 5, 2026 and September 8, 2026 respectively.

Scorecard2 real differences · 8 level
DTD Tracker Mobile versus ReefKG: the parameters behind the verdict, then further details
ParameterDTD Tracker MobileReefKG
PriceFreeFree
Rating2.0 (4 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings4 — better—
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.615.0 — better
Further details — not scored
Size41 MB58 MB
Age rating4+4+
Developer3SI Wren Intermediate Holdings, LLCReefkg corporation

In-app purchases

None

DTD Tracker Mobile

No in-app purchases

2 purchases

ReefKG

Subscriptions2
  • Premium Monthly Plan$12.991 Month
  • Premium Yearly Plan$95.901 Year

Questions

Is DTD Tracker Mobile free?
DTD Tracker Mobile is free to download, with no in-app purchases.
Is ReefKG free?
ReefKG is free to download, with in-app purchases available.
Do DTD Tracker Mobile or ReefKG have ads?
Neither DTD Tracker Mobile nor ReefKG shows ads.
Which is updated more often, DTD Tracker Mobile or ReefKG?
DTD Tracker Mobile ships an update monthly, and ReefKG fortnightly. Most recently, DTD Tracker Mobile was updated on June 5, 2026 and ReefKG on September 8, 2026.

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