Holy Water is a pool and spa chemistry logging app for iOS that enables manual parameter tracking and maintenance history.
The App DNA
What makes this app unique?
It removes the cognitive friction of manual record-keeping by providing color-coded status indicators that identify necessary chemical adjustments at a glance.
For Pool and spa owners who require structured tracking of water chemistry and maintenance history.
What does it look like?
Key features
Manual entry of pool parameters including free chlorine, pH, alkalinity, cyanuric acid, and salt levels.
Imports test results from pool store reports or handwritten measurements.
Guidance on free-chlorine levels to determine safe swimming windows.
How much does it cost?
Subscription model gates data import features, anchored at $19.99/year for annual commitment.
Velocity
Maintenance developmentnew contentUX improvementsShow more...
With only one release in the last three months, the app operates on a maintenance cadence. Development is currently focused on core utility features, such as maintenance logging and chemical guidance, rather than frequent updates. The project has remained stagnant for 92 days since the latest version was deployed. Future development appears to be infrequent and focused on functional stability.
Who built it?
User Sentiment
What do users think recently?
Review voice lately leans thrilled. Users appreciate the latest update adds chemical and maintenance logging which provides a comprehensive history for pool owners.
How are ratings & reviews evolving?
What users say, by theme
- The latest update adds chemical and maintenance logging which provides a comprehensive history for pool owners
1 of 1 recent reviews analyzed · limited sample
Read the full review analysisCompetition
Competitive landscape for Holy Water: Pool Chemistry
How's the Utilities market?
Holy Water holds a 5-star rating on the iOS App Store, though this is based on a small sample of 3 ratings. The lack of recent updates over the last 92 days suggests a maintenance-mode posture rather than a growth-oriented market entry.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for Holy Water: Pool Chemistry
Where is it heading?
The pool maintenance category is shifting toward automated, hardware-integrated solutions that reduce the manual burden of testing. Holy Water remains exposed to this trend: without a pivot to automated data ingestion, the current manual-entry model will struggle to retain power users.
- The 92-day update gap indicates a shift to maintenance mode, which limits the ability to capture new market share from active rivals.
The SWOT
- Color-coded status indicators simplify maintenance tasks
- Automated data import partnerships could increase conversion
Next best moves
Pivot to automated hardware-report integration because manual entry is a high-friction barrier → increase Pro conversion
The counter-intuitive read
The 92-day update silence is not a failure…
Read the full takeBottom line
Maintaining the current manual-entry loop without further feature expansion leaves Holy Water vulnerable to automated-testing rivals, so the PM should pivot to integrating third-party hardware data to unlock higher user retention.
Unlock 1 critical friction, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is Holy Water free to use?
Does Holy Water work for spa owners?
What happens if I cancel my Pro subscription?
Sources
- [1] App Store listing, source
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