Comparison

Drop Counter vs Reef Stability

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

Head to head
About

Drop Counter

Features
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Measure Water Consumption โ€“ Drop by Drop! Did you know that a dripping faucet can waste up to 30 liters of water per day? With our app, you can easily find out how much water is being wasted โ€“ simply by tapping on your screen. How it works: Tap instead of guessing: Count the drops by tapping on your smartphone in the rhythm of the dripping. Real-time analysis: Our app instantly calculates the approximate water loss and cost. Raise awareness: See at a glance how much you can save with just one simple action โ€“ fixing a dripping faucet. Minimalistic & intuitive: Easy to use, clear results, and no complicated settings. Why this app? You make water consumption visible. You help the environment by identifying and reducing water waste. You save money by taking timely action. Start now โ€“ counting drops has never been easier!

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 โ€” 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 โ€” a daily dose from your own tank's measured uptake - Stability first โ€” 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 โ€” dose changes stay within reef-safe daily limits, with extra caution for SPS - Honest by design โ€” sourced chemistry, and it never invents a number it can't stand behind - Your data is yours โ€” full history and CSV export, free, forever - No account, no sign-up โ€” your logs stay on your device FREE Log, track and export everything โ€” 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

Drop Counter3 screens
Reef Stability4 screens

Verdict

The call

The clearest difference is update cadence: Reef Stability at weekly against Drop Counter's monthly. Drop Counter's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price, ads and in-app purchases there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Drop Counter sells 1 one-off in-app purchase 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

Drop Counter ships an update monthly, Reef Stability weekly. The most recent releases landed on September 11, 2026 and September 9, 2026 respectively.

Scorecard3 real differences ยท 3 level
Drop Counter versus Reef Stability: the parameters behind the verdict, then further details
ParameterDrop CounterReef Stability
PriceFreeFree
Update frequencyMonthlyWeekly โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod โ€” betteriPhone
Requires iOS15.1 โ€” better18.0
Further details โ€” not scored
Size49 MB9 MB
Age rating4+4+
DeveloperHannes HuweYUSUF AYDIN

In-app purchases

1 purchases

Drop Counter

One-time1
  • Lifetime Ad-Free$0.99
3 purchases

Reef Stability

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

Questions

Is Drop Counter free?
Drop Counter 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 Drop Counter or Reef Stability have ads?
Neither Drop Counter nor Reef Stability shows ads.
Which is updated more often, Drop Counter or Reef Stability?
Drop Counter ships an update monthly, and Reef Stability weekly. Most recently, Drop Counter was updated on September 11, 2026 and Reef Stability on September 9, 2026.

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