HotTub&Pool is a chemical dosage and water balance calculator for pool and hot tub owners on iOS.
The App DNA
What makes this app unique?
The app removes the manual effort of calculating chemical additions for water maintenance, though current technical failures prevent it from serving this need reliably.
For Hot tub, spa, and pool owners requiring technical calculations for water chemistry and equipment maintenance.
What does it look like?
Key features
Calculates precise chemical additions for calcium, alkalinity, pH, sanitizer, and stabilizer levels.
Determines water balance metrics to maintain system efficiency.
Includes volume, flow rate, turnover, filter size, and total dynamic head calculators.
How much does it cost?
The app is distributed as a free utility with no visible subscription or in-app purchase gates.
Velocity
Dormant developmentnew contentShow more...
The app has been inactive for 3,654 days, indicating a complete cessation of development. No new features, bug fixes, or operational updates have been deployed in over a decade. The project is effectively abandoned, as the last release predates current platform standards and requirements.
Who built it?
User Sentiment
What do users think recently?
The recent review mood reads upset. Users appreciate the pool volume calculator provides a useful baseline for homeowners managing their own chemical maintenance.
How are ratings & reviews evolving?
What users say, by theme
- The pool volume calculator provides a useful baseline for homeowners managing their own chemical maintenance
- Inaccurate chemical dosing calculations lead to potentially unsafe pool maintenance advice for the average homeowner
15 of 15 recent reviews analyzed · moderate confidence · Upset overall
Read the full review analysisUnlock 2 more frustration themes and 1 user request, each backed by review evidence.
Access the full report for freeCompetition
Competitive landscape for HotTub&Pool
How's the Utilities market?
HotTub&Pool holds a 3.5-star rating across a small sample of 13 reviews. The lack of updates since 2016 leaves the app without a competitive position against modern, actively maintained utilities.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for HotTub&Pool
Where is it heading?
The pool utility market is shifting toward cloud-synced, actively maintained tools that integrate with smart-home systems. HotTub&Pool is currently in a terminal state due to a decade of neglect, and without a total rebuild, it will continue to lose its remaining user base to modern competitors.
- The lack of updates for over a decade prevents the app from functioning on modern hardware, which drives users to churn.
- Reports of inaccurate chemical dosing math create safety concerns, which permanently damages the brand's reputation as a reliable maintenance tool.
The SWOT
- Langelier Saturation Index (LSI) calculator provides a technical differentiator for system efficiency
- Add support for Bromine-based hot tub systems
- Implement Fahrenheit support to align with standard user needs
Next best moves
Audit calculator math against industry standards because users report inaccurate dosing advice → restore user trust
+ 1 more prioritized moveThe counter-intuitive read
The app's primary risk is not the lack of new features…
Read the full takeSince the last report: The app's competitive position remains stagnant, but the analytical focus has shifted from a total sunset recommendation to a specific, two-pronged remediation strategy targeting math accuracy and hardware compatibility.
Bottom line
HotTub&Pool requires a complete technical audit to restore basic functionality on modern hardware, as the current state of the calculator prevents it from serving its core utility purpose.
Unlock 3 critical frictions, 1 market threat, 1 more prioritized move and the analyst’s take.
Access the full report for freeFAQ
Is HotTub&Pool safe to use for my pool chemicals?
Does HotTub&Pool support Bromine-based hot tubs?
What is a free alternative to HotTub&Pool?
Sources
- [1] App Store, source
Report last updated