Comparison

NextUpReef vs Reef Stability

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

Head to head
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.

About

Reef Stability

Features
Read full description

Reef Stability turns your own test results into the two things every reef keeper actually needs: how much to dose, and when to leave the tank alone. Log your alkalinity, calcium, magnesium and nutrients, and Reef Stability learns how fast your tank uses each one. Then it works out the daily dose to hold it steady — from your data, not a generic chart. When a wobble is just test-kit noise, it says so, instead of sending you chasing a number. WHAT IT DOES - Know what to change — a daily dose from your own tank's measured uptake - Stability first — it tells you when to do nothing - Every parameter on one clean screen: alkalinity, calcium, magnesium, nitrate, phosphate, salinity, temperature, pH - Trends that filter out test-kit scatter, so you see real drift - Safe by design — dose changes stay within reef-safe daily limits, with extra caution for SPS - Honest by design — sourced chemistry, and it never invents a number it can't stand behind - Your data is yours — full history and CSV export, free, forever - No account, no sign-up — your logs stay on your device FREE Log, track and export everything — free, with no time limit. REEF STABILITY PREMIUM Unlocks the dose recommendations, supplement forecasting and cross-parameter interpretation. Available monthly, annually, or as a one-time lifetime purchase. Stability over chasing numbers. --- Privacy Policy: https://reefstability.com/privacy Terms of Use: https://reefstability.com/terms Subscriptions are billed to your Apple ID. An auto-renewing subscription renews unless cancelled at least 24 hours before the end of the current period; manage or cancel anytime in your App Store account settings. A lifetime purchase is a one-time payment.

Screenshots

NextUpReef4 screens
Reef Stability4 screens

Verdict

The call

The clearest difference is device support: NextUpReef at 3 against Reef Stability's 1. NextUpReef also leads on iOS requirement (15.1 vs 18.0). On price, update cadence, ads and in-app purchases 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. NextUpReef sells 2 in-app purchases, starting at $4.99 per month and Reef Stability sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

NextUpReef ships an update every 4 days, Reef Stability weekly. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 8 level
NextUpReef versus Reef Stability: the parameters behind the verdict, then further details
ParameterNextUpReefReef Stability
PriceFreeFree
Rating3.7 (3 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 4 days — betterWeekly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better18.0
Further details — not scored
Size59 MB9 MB
Age rating17+4+
DeveloperAdam WinsteadYUSUF AYDIN

In-app purchases

2 purchases

NextUpReef

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

Reef Stability

Subscriptions2
  • Premium Monthly$6.991 Month
  • Premium Annual$39.991 Year
One-time1
  • Premium Lifetime$89.99

Questions

Is NextUpReef free?
NextUpReef is free to download, with in-app purchases available.
Is Reef Stability free?
Reef Stability is free to download, with in-app purchases available.
Do NextUpReef or Reef Stability have ads?
Neither NextUpReef nor Reef Stability shows ads.
Which is updated more often, NextUpReef or Reef Stability?
NextUpReef ships an update every 4 days, and Reef Stability weekly. Most recently, NextUpReef was updated on October 13, 2026 and Reef Stability on October 11, 2026.

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