Comparison

Reef Buddy vs NextUpReef

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

Head to head
About

Reef Buddy

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.

Highlights
  • Log critical aquarium parameters
  • Monitor KH, salinity, pH, Ca, Mg, and more
  • Analyze data with automated insights
  • Sync data across iPhone and iPad
  • Guidance for manual test kit results
  • Personalized advice with premium subscription
Features
Read full description

Reef Buddy – Track Your Reef Tank With Confidence Reef Buddy is the reef tracker and water test log built for saltwater tank and saltwater aquarium keepers. Log water tests, monitor parameter trends, and understand what is changing in your reef before small swings become real problems. Track Every Essential Reef Parameter Record KH, salinity, pH, Ca, Mg, NO₂, NO₃, PO₄, SiO₂, temperature, and more. Keep a clear aquarium log with visual trends for the values reef keepers watch most. Smart Insights for Saltwater Aquariums Get automated insights from your measurements so you can react earlier, keep your reef tank stable, and make better maintenance decisions. Sync Across Devices All your data is safely stored and automatically synced across your iPhone and iPad. Manual Test Help Enter results from your favorite test kits faster with guided steps designed for reef routines, regular water tests, and day-to-day reef journaling. Unlock Premium with Shrimpy Shrimpy, your reef assistant, unlocks powerful features: • Expert analysis of your tank data • Personalized advice • Photo analysis of your aquarium • Start and continue conversations with Shrimpy for personalized reefing tips Why Reef Keepers Choose Reef Buddy • Built for reef tanks and saltwater aquariums • Clean tracking without unnecessary clutter • Compatible with major test kits, including Red Sea, Salifert, Hanna, and more Subscription Info Shrimpy Premium is available as a monthly or yearly subscription. Payment will be charged to your iTunes account at confirmation of purchase. Subscriptions auto-renew unless cancelled 24 hours before the end of the period. Manage your subscription anytime in your Apple account settings. Terms & Privacy Policy: https://reef-buddy.app

About

NextUpReef

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.

Highlights
  • AI Reef Advisor for tank analysis
  • Parameter logging and trend charting
  • Smart outlet control for equipment
  • Neptune Apex integration
  • Tank setup and livestock tracking
  • Smart reminders for maintenance
  • Reef community insights
Features
Read full description

NextUpReef is the reef tank app that keeps your whole system in one place: water chemistry, dosing, equipment, livestock, reminders and AI advice that actually knows your tank. Built for reefers, by a reefer. LOG A FULL TEST IN SECONDS Record alkalinity, calcium, magnesium, nitrate, phosphate, salinity, pH, temperature, ammonia and nitrite. Your last values pre-fill, and every entry is color-coded against your target range as you type. Pick your tank type (mixed reef, SPS, LPS, softie, nano, ULNS and more) for sensible default targets, or set your own. EVERY TREND, TWO SCORES — REEF PULSE See a chart for every parameter with your target range drawn in and water changes marked. Your Reef Score shows how healthy the tank is today; your Stability Score shows how steadily you keep it that way. Tap either score to see exactly what's helping and what's holding it back. REEF AI ADVISOR (PRO) A full analysis of your tank built from your own data: parameters and trends, water changes, livestock, equipment and dosing. See what's working, what needs attention and what to do next, ranked by urgency. Ask Reef AI Chat anything about your reef, check livestock compatibility with the Stocking Advisor, and log results by snapping a photo of your test kit. EVERY DOSE, ONE CHECKLIST The Dosing screen lists everything due today, whether you dose by hand, with your own pump or automatically. Tap Dosed to log it and watch whether alkalinity, calcium and magnesium are holding steady. Choose from 50+ common products with label strengths built in. Pro adds a dose calculator that dials in your daily dose from your own test trend, and a daily dosing reminder at the time you pick. CONTROL YOUR REEF GEAR (PRO) • Neptune Apex: sync temperature, pH, salinity and Trident alkalinity, calcium and magnesium into your logs; switch outlets; run Feed Mode; set heater temperatures; and schedule dosing with a built-in safety shutoff. • Shelly smart plugs: schedules run on the plug, even with no internet. For dosing pumps, each dose is confirmed by power draw and you're alerted if one is missed. • CoralVue HYDROS (early access): cloud-connected readings and control from anywhere. NEVER MISS A WATER CHANGE Schedule water changes and maintenance like filter socks, carbon and RO/DI filters. Reminders arrive inside the notification hours you choose. EVERYTHING IN YOUR TANK — MY REEF Track fish, corals and inverts with care info, plus equipment, lighting schedules, dosing, salt mix, monthly tank photos and what it all cost. NEW TO REEFING? NEW TANK GUIDE Follow six guided phases from setup through cycling, the ugly phase, first fish and first corals to an established reef, with a checklist for each step. LEARN FROM THE BEST TANKS — COMMUNITY Browse the leaderboard and see inside top-ranked tanks: their parameters, salt, lighting, equipment, dosing and water change habits. Compare your tank with others like it. Your tank stays private unless you choose to share it. ON THE BIG SCREEN Pro members can open the web dashboard at portal.nextupreef.com for full-screen charts and a CSV export of their readings. FREE TO START NextUpReef is free to download and use. NextUpReef Pro unlocks AI features, device control, the dose calculator, unlimited tanks and reminders, the web dashboard and more. Every new account gets a 30-day Pro trial with no payment details required. Privacy Policy: https://nextupreef.com/privacy Terms of Service: https://nextupreef.com/terms Questions or ideas: info@nextupreef.com Neptune Systems and Apex are trademarks of Neptune Systems. CoralVue and HYDROS are trademarks of CoralVue, Inc. Shelly is a trademark of Shelly Group. NextUpReef is independent and not affiliated with these companies.

Screenshots

Reef Buddy4 screens
NextUpReef4 screens

Verdict

The call

The clearest difference is rating: Reef Buddy at 4.1 against NextUpReef's 3.7. Reef Buddy also leads on ratings volume (19 vs 3) and review sentiment (60% vs 50%). NextUpReef's advantage is update cadence (every 4 days vs every 2 weeks) and iOS requirement (15.1 vs 26.0). On price, ads, in-app purchases and monetization model 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. Reef Buddy sells 4 in-app purchases, starting at $0.99 per 7 days and NextUpReef sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Reef Buddy holds the better App Store score, 4.1 against 3.7. That said, the two scores are not equally well evidenced: Reef Buddy has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 60% of Reef Buddy's written reviews are positive against 50% of NextUpReef's.

UpkeepUpdate frequency

Reef Buddy ships an update every 2 weeks, NextUpReef every 4 days. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

Scorecard5 real differences · 5 level
Reef Buddy versus NextUpReef: the parameters behind the verdict, then further details
ParameterReef BuddyNextUpReef
PriceFreeFree
Rating4.1 (19 ratings) — better3.7 (3 ratings)
Positive reviews60.0% of reviews — better50.0% of reviews
Number of ratings19 — better3
Update frequencyEvery 2 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS26.015.1 — better
Further details — not scored
Size45 MB59 MB
Age rating4+17+
Developermaxime marinelAdam Winstead

Customer experience

Reef Buddy

All ratings19 ratings
Positive73.7%
Neutral5.3%
Negative21.1%
Written reviews10 reviews
Positive60.0%
Neutral0.0%
Negative40.0%

NextUpReef

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

4 purchases

Reef Buddy

Subscriptions4
  • Reef Buddy Pro Weekly$0.997 Days
  • Reef Buddy Pro3 Days trial$1.991 Month
  • Reef buddy pro month$3.991 Month
Show 1 more
  • Reef buddy pro annual3 Days trial$44.991 Year
2 purchases

NextUpReef

Subscriptions2
  • NextUpReef Pro$4.991 Month
  • NextUpReef Pro$39.991 Year

Questions

Is Reef Buddy free?
Reef Buddy is free to download, with in-app purchases available.
Is NextUpReef free?
NextUpReef is free to download, with in-app purchases available.
Which has better reviews, Reef Buddy or NextUpReef?
Reef Buddy is rated higher. Reef Buddy averages 4.1 out of 5 from 19 ratings, while NextUpReef averages 3.7 from 3 ratings.
Do Reef Buddy or NextUpReef have ads?
Neither Reef Buddy nor NextUpReef shows ads.
Which is updated more often, Reef Buddy or NextUpReef?
Reef Buddy ships an update every 2 weeks, and NextUpReef every 4 days. Most recently, Reef Buddy was updated on October 7, 2026 and NextUpReef on October 13, 2026.

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