Aquarium Calculator
By EBLI
Aquarium Calculator is a utility app for aquarium hobbyists that computes tank volume, filtration needs, and stocking limits on iOS and Android.
The App DNA
What makes this app unique?
The app removes the cognitive friction of manual conversion and equipment sizing, which is the primary barrier to maintaining a healthy tropical aquarium setup.
For Aquarium hobbyists and fish tank owners requiring precise volume, filtration, and stocking calculations.
What does it look like?
Key features
Calculates water volume for square, rectangular, cylindrical, and hexagon tanks using dimensions in inches or centimeters.
Suggests pump flow rates and pipe diameters based on calculated tank volume, establishing category authority.
Calculates sand requirements, fish population limits, and water treatment dosages for ongoing maintenance.
How much does it cost?
Monetization splits between ad-supported inventory on Android and a direct paid-download model on iOS.
Velocity
Steady developmentShow more...
Who built it?
EBLI
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What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for Aquarium Calculator
How's the Tools market?
Aquarium Calculator maintains a 4.08 rating on Android across 421 reviews, positioning it as a stable, long-standing utility. The $2.99 price point on iOS contrasts with the ad-supported Android model, signaling a strategy to capture value from users who prefer an ad-free experience.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for Aquarium Calculator
Where is it heading?
The aquarium utility market is shifting toward integrated, data-rich apps that combine calculation with livestock management. Aquarium Calculator's current focus on basic volume and equipment sizing leaves it vulnerable to more comprehensive, modern competitors.
- The app maintains a steady, long-term presence in the tools category without significant feature expansion, signaling a maintenance-mode lifecycle.
The SWOT
- Technical guidance on pump flow rates establishes category authority
- Integration of fish species database for stocking limits
Next best moves
Ship a premium ad-free tier on Android because ad-supported utility apps face high churn from power users → increase LTV
The counter-intuitive read
The app's reliance on ads on Android is a strategic error…
Read the full takeSince the last report: The transition to a freemium model and the formalization of equipment sizing as a core differentiator mark a shift toward monetization and technical positioning. The app now differentiates its revenue streams by platform, charging for an ad-free experience on iOS while retaining ad-supported access on Android.
Bottom line
Aquarium Calculator secures its position through technical utility, but the ad-supported Android model creates friction for its core hobbyist audience. Transitioning to a unified premium model would better align the app's monetization with the high-intent nature of its users.
Unlock 1 critical friction, 1 market threat and the analyst’s take.
Access the full report for freeSources
- [1] App Store listing
Report last updated